./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/theatreSquare.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/theatreSquare.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 90f363148c6ea94b18bb0ae0702d2476b109719554576ef0704192e7e62145c3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 03:05:36,040 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 03:05:36,097 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 03:05:36,106 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 03:05:36,106 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 03:05:36,127 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 03:05:36,128 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 03:05:36,128 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 03:05:36,128 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 03:05:36,129 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 03:05:36,129 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 03:05:36,129 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 03:05:36,130 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 03:05:36,130 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 03:05:36,130 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 03:05:36,130 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 03:05:36,131 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 03:05:36,131 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 03:05:36,131 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 03:05:36,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 03:05:36,131 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 03:05:36,131 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 03:05:36,131 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 03:05:36,131 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 03:05:36,131 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 03:05:36,131 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 03:05:36,131 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 03:05:36,131 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 03:05:36,131 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 03:05:36,132 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:05:36,132 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:05:36,132 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:05:36,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:05:36,132 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 03:05:36,132 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:05:36,132 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:05:36,132 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:05:36,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:05:36,133 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 03:05:36,133 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 03:05:36,133 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 03:05:36,133 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 03:05:36,133 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 03:05:36,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 03:05:36,133 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 03:05:36,133 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 03:05:36,134 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 03:05:36,134 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 03:05:36,134 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90f363148c6ea94b18bb0ae0702d2476b109719554576ef0704192e7e62145c3 [2025-01-09 03:05:36,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 03:05:36,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 03:05:36,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 03:05:36,375 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 03:05:36,376 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 03:05:36,376 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/theatreSquare.c [2025-01-09 03:05:37,498 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fa4f6c893/f11bf1d300a54f55be5c221bf3649302/FLAGc145e3db4 [2025-01-09 03:05:37,714 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 03:05:37,715 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/theatreSquare.c [2025-01-09 03:05:37,724 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fa4f6c893/f11bf1d300a54f55be5c221bf3649302/FLAGc145e3db4 [2025-01-09 03:05:37,740 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fa4f6c893/f11bf1d300a54f55be5c221bf3649302 [2025-01-09 03:05:37,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 03:05:37,743 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 03:05:37,744 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 03:05:37,744 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 03:05:37,747 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 03:05:37,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:05:37" (1/1) ... [2025-01-09 03:05:37,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d08bdda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:05:37, skipping insertion in model container [2025-01-09 03:05:37,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:05:37" (1/1) ... [2025-01-09 03:05:37,776 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 03:05:37,878 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/theatreSquare.c[370,383] [2025-01-09 03:05:37,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:05:37,903 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 03:05:37,910 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/theatreSquare.c[370,383] [2025-01-09 03:05:37,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:05:37,930 INFO L204 MainTranslator]: Completed translation [2025-01-09 03:05:37,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:05:37 WrapperNode [2025-01-09 03:05:37,932 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 03:05:37,933 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 03:05:37,933 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 03:05:37,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 03:05:37,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:05:37" (1/1) ... [2025-01-09 03:05:37,941 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:05:37" (1/1) ... [2025-01-09 03:05:37,955 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 85 [2025-01-09 03:05:37,955 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 03:05:37,956 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 03:05:37,956 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 03:05:37,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 03:05:37,961 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:05:37" (1/1) ... [2025-01-09 03:05:37,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:05:37" (1/1) ... [2025-01-09 03:05:37,962 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:05:37" (1/1) ... [2025-01-09 03:05:37,969 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]. [2025-01-09 03:05:37,969 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:05:37" (1/1) ... [2025-01-09 03:05:37,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:05:37" (1/1) ... [2025-01-09 03:05:37,971 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:05:37" (1/1) ... [2025-01-09 03:05:37,971 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:05:37" (1/1) ... [2025-01-09 03:05:37,973 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:05:37" (1/1) ... [2025-01-09 03:05:37,974 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:05:37" (1/1) ... [2025-01-09 03:05:37,974 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:05:37" (1/1) ... [2025-01-09 03:05:37,975 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 03:05:37,975 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 03:05:37,976 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 03:05:37,976 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 03:05:37,976 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:05:37" (1/1) ... [2025-01-09 03:05:37,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:05:37,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:37,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 03:05:37,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 03:05:38,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 03:05:38,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 03:05:38,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 03:05:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 03:05:38,053 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 03:05:38,054 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 03:05:38,152 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2025-01-09 03:05:38,152 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 03:05:38,158 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 03:05:38,158 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 03:05:38,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:05:38 BoogieIcfgContainer [2025-01-09 03:05:38,159 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 03:05:38,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 03:05:38,160 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 03:05:38,163 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 03:05:38,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 03:05:37" (1/3) ... [2025-01-09 03:05:38,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebe523a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:05:38, skipping insertion in model container [2025-01-09 03:05:38,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:05:37" (2/3) ... [2025-01-09 03:05:38,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebe523a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:05:38, skipping insertion in model container [2025-01-09 03:05:38,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:05:38" (3/3) ... [2025-01-09 03:05:38,165 INFO L128 eAbstractionObserver]: Analyzing ICFG theatreSquare.c [2025-01-09 03:05:38,174 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 03:05:38,175 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG theatreSquare.c that has 1 procedures, 19 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-01-09 03:05:38,202 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 03:05:38,209 INFO L333 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=PETRI_NET, 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;@6bf29873, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 03:05:38,209 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 03:05:38,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:38,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-09 03:05:38,214 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:38,214 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-09 03:05:38,214 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:38,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:38,218 INFO L85 PathProgramCache]: Analyzing trace with hash 890799655, now seen corresponding path program 1 times [2025-01-09 03:05:38,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:38,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49780201] [2025-01-09 03:05:38,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:05:38,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:38,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 03:05:38,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 03:05:38,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:38,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:05:38,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:38,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49780201] [2025-01-09 03:05:38,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49780201] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:05:38,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:05:38,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:05:38,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899406964] [2025-01-09 03:05:38,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:05:38,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:05:38,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:38,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:05:38,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:05:38,392 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:38,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:38,420 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2025-01-09 03:05:38,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:05:38,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-01-09 03:05:38,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:38,426 INFO L225 Difference]: With dead ends: 27 [2025-01-09 03:05:38,426 INFO L226 Difference]: Without dead ends: 15 [2025-01-09 03:05:38,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:05:38,429 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:38,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 55 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:38,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-01-09 03:05:38,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-01-09 03:05:38,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:38,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2025-01-09 03:05:38,447 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 20 transitions. Word has length 6 [2025-01-09 03:05:38,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:38,447 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 20 transitions. [2025-01-09 03:05:38,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:38,447 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2025-01-09 03:05:38,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-09 03:05:38,448 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:38,448 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:38,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 03:05:38,448 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:38,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:38,449 INFO L85 PathProgramCache]: Analyzing trace with hash 480829441, now seen corresponding path program 1 times [2025-01-09 03:05:38,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:38,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650785663] [2025-01-09 03:05:38,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:05:38,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:38,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 03:05:38,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 03:05:38,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:38,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:38,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:05:38,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:38,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650785663] [2025-01-09 03:05:38,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650785663] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:05:38,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:05:38,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 03:05:38,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080123215] [2025-01-09 03:05:38,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:05:38,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 03:05:38,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:38,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 03:05:38,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:05:38,682 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:38,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:38,795 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2025-01-09 03:05:38,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 03:05:38,795 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-01-09 03:05:38,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:38,796 INFO L225 Difference]: With dead ends: 28 [2025-01-09 03:05:38,796 INFO L226 Difference]: Without dead ends: 23 [2025-01-09 03:05:38,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2025-01-09 03:05:38,796 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:38,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 93 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:05:38,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-01-09 03:05:38,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2025-01-09 03:05:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2025-01-09 03:05:38,803 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 14 [2025-01-09 03:05:38,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:38,803 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2025-01-09 03:05:38,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:38,803 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2025-01-09 03:05:38,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-09 03:05:38,803 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:38,803 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:38,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 03:05:38,804 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:38,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:38,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1336946788, now seen corresponding path program 1 times [2025-01-09 03:05:38,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:38,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179140571] [2025-01-09 03:05:38,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:05:38,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:38,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 03:05:38,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 03:05:38,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:38,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:05:38,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:38,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179140571] [2025-01-09 03:05:38,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179140571] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:05:38,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:05:38,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:05:38,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352825728] [2025-01-09 03:05:38,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:05:38,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:05:38,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:38,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:05:38,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:05:38,888 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2025-01-09 03:05:38,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:38,904 INFO L93 Difference]: Finished difference Result 33 states and 47 transitions. [2025-01-09 03:05:38,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:05:38,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 [2025-01-09 03:05:38,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:38,905 INFO L225 Difference]: With dead ends: 33 [2025-01-09 03:05:38,905 INFO L226 Difference]: Without dead ends: 23 [2025-01-09 03:05:38,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:05:38,906 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:38,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 35 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:38,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-01-09 03:05:38,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-01-09 03:05:38,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 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) [2025-01-09 03:05:38,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2025-01-09 03:05:38,912 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 15 [2025-01-09 03:05:38,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:38,913 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2025-01-09 03:05:38,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2025-01-09 03:05:38,914 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2025-01-09 03:05:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-09 03:05:38,914 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:38,914 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:38,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 03:05:38,914 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:38,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:38,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1961583384, now seen corresponding path program 1 times [2025-01-09 03:05:38,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:38,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507133351] [2025-01-09 03:05:38,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:05:38,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:38,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 03:05:38,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 03:05:38,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:38,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:38,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:05:38,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:38,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507133351] [2025-01-09 03:05:38,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507133351] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:05:38,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:05:38,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:05:38,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594459622] [2025-01-09 03:05:38,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:05:38,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:05:38,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:38,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:05:38,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:05:38,996 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2025-01-09 03:05:39,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:39,017 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2025-01-09 03:05:39,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:05:39,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 [2025-01-09 03:05:39,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:39,018 INFO L225 Difference]: With dead ends: 35 [2025-01-09 03:05:39,018 INFO L226 Difference]: Without dead ends: 27 [2025-01-09 03:05:39,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:05:39,018 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:39,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 35 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:39,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-01-09 03:05:39,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-01-09 03:05:39,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.5) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:39,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2025-01-09 03:05:39,042 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 39 transitions. Word has length 15 [2025-01-09 03:05:39,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:39,043 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 39 transitions. [2025-01-09 03:05:39,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2025-01-09 03:05:39,046 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2025-01-09 03:05:39,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-09 03:05:39,047 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:39,047 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:39,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 03:05:39,047 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:39,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:39,048 INFO L85 PathProgramCache]: Analyzing trace with hash 851712801, now seen corresponding path program 1 times [2025-01-09 03:05:39,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:39,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122608178] [2025-01-09 03:05:39,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:05:39,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:39,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 03:05:39,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 03:05:39,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:39,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:39,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:05:39,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:39,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122608178] [2025-01-09 03:05:39,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122608178] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:05:39,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:05:39,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 03:05:39,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447309707] [2025-01-09 03:05:39,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:05:39,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 03:05:39,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:39,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 03:05:39,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 03:05:39,111 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:39,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:39,119 INFO L93 Difference]: Finished difference Result 49 states and 71 transitions. [2025-01-09 03:05:39,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 03:05:39,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-01-09 03:05:39,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:39,120 INFO L225 Difference]: With dead ends: 49 [2025-01-09 03:05:39,120 INFO L226 Difference]: Without dead ends: 29 [2025-01-09 03:05:39,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 03:05:39,120 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:39,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:39,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-01-09 03:05:39,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-01-09 03:05:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:39,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2025-01-09 03:05:39,124 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 41 transitions. Word has length 16 [2025-01-09 03:05:39,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:39,125 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 41 transitions. [2025-01-09 03:05:39,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:39,125 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2025-01-09 03:05:39,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-09 03:05:39,125 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:39,125 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:39,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 03:05:39,125 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:39,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:39,127 INFO L85 PathProgramCache]: Analyzing trace with hash -89791814, now seen corresponding path program 1 times [2025-01-09 03:05:39,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:39,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467529214] [2025-01-09 03:05:39,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:05:39,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:39,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 03:05:39,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 03:05:39,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:39,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:39,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:05:39,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:39,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467529214] [2025-01-09 03:05:39,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467529214] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:05:39,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:05:39,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:05:39,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100642337] [2025-01-09 03:05:39,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:05:39,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:05:39,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:39,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:05:39,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:05:39,186 INFO L87 Difference]: Start difference. First operand 29 states and 41 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2025-01-09 03:05:39,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:39,195 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2025-01-09 03:05:39,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:05:39,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 [2025-01-09 03:05:39,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:39,196 INFO L225 Difference]: With dead ends: 34 [2025-01-09 03:05:39,196 INFO L226 Difference]: Without dead ends: 27 [2025-01-09 03:05:39,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:05:39,196 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:39,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:39,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-01-09 03:05:39,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-01-09 03:05:39,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:39,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2025-01-09 03:05:39,203 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 17 [2025-01-09 03:05:39,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:39,203 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2025-01-09 03:05:39,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2025-01-09 03:05:39,203 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2025-01-09 03:05:39,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-09 03:05:39,205 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:39,205 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:39,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 03:05:39,205 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:39,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:39,205 INFO L85 PathProgramCache]: Analyzing trace with hash 57490686, now seen corresponding path program 1 times [2025-01-09 03:05:39,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:39,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137108637] [2025-01-09 03:05:39,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:05:39,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:39,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 03:05:39,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 03:05:39,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:39,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:05:39,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:39,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137108637] [2025-01-09 03:05:39,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137108637] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:05:39,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:05:39,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 03:05:39,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884500098] [2025-01-09 03:05:39,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:05:39,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 03:05:39,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:39,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 03:05:39,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 03:05:39,257 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2025-01-09 03:05:39,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:39,266 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2025-01-09 03:05:39,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 03:05:39,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 [2025-01-09 03:05:39,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:39,269 INFO L225 Difference]: With dead ends: 38 [2025-01-09 03:05:39,269 INFO L226 Difference]: Without dead ends: 24 [2025-01-09 03:05:39,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 03:05:39,269 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:39,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:39,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-01-09 03:05:39,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-01-09 03:05:39,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2025-01-09 03:05:39,274 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 17 [2025-01-09 03:05:39,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:39,275 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2025-01-09 03:05:39,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2025-01-09 03:05:39,275 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2025-01-09 03:05:39,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-09 03:05:39,275 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:39,275 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:39,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 03:05:39,276 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:39,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:39,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1116968895, now seen corresponding path program 1 times [2025-01-09 03:05:39,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:39,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189982985] [2025-01-09 03:05:39,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:05:39,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:39,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 03:05:39,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 03:05:39,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:39,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:39,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:39,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189982985] [2025-01-09 03:05:39,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189982985] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:05:39,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:05:39,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:05:39,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438892712] [2025-01-09 03:05:39,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:05:39,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:05:39,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:39,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:05:39,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:05:39,325 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:39,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:39,335 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2025-01-09 03:05:39,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:05:39,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-01-09 03:05:39,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:39,335 INFO L225 Difference]: With dead ends: 33 [2025-01-09 03:05:39,336 INFO L226 Difference]: Without dead ends: 26 [2025-01-09 03:05:39,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:05:39,336 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:39,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:39,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-01-09 03:05:39,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2025-01-09 03:05:39,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:39,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2025-01-09 03:05:39,339 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 18 [2025-01-09 03:05:39,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:39,340 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2025-01-09 03:05:39,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:39,340 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2025-01-09 03:05:39,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-09 03:05:39,340 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:39,340 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:39,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 03:05:39,340 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:39,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:39,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1682453988, now seen corresponding path program 1 times [2025-01-09 03:05:39,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:39,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676815165] [2025-01-09 03:05:39,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:05:39,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:39,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 03:05:39,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 03:05:39,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:39,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:39,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:39,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676815165] [2025-01-09 03:05:39,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676815165] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:39,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991954783] [2025-01-09 03:05:39,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:05:39,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:39,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:39,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:39,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 03:05:39,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 03:05:39,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 03:05:39,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:39,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:39,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 03:05:39,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:39,466 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:05:39,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991954783] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:05:39,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:05:39,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-01-09 03:05:39,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890563148] [2025-01-09 03:05:39,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:05:39,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:05:39,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:39,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:05:39,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:05:39,468 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:39,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:39,478 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2025-01-09 03:05:39,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:05:39,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-01-09 03:05:39,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:39,479 INFO L225 Difference]: With dead ends: 32 [2025-01-09 03:05:39,479 INFO L226 Difference]: Without dead ends: 27 [2025-01-09 03:05:39,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:05:39,479 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:39,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 31 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:39,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-01-09 03:05:39,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2025-01-09 03:05:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:39,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2025-01-09 03:05:39,482 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 19 [2025-01-09 03:05:39,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:39,482 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2025-01-09 03:05:39,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:39,482 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2025-01-09 03:05:39,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-09 03:05:39,483 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:39,483 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:39,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 03:05:39,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:39,684 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:39,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:39,684 INFO L85 PathProgramCache]: Analyzing trace with hash -558388908, now seen corresponding path program 1 times [2025-01-09 03:05:39,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:39,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307954888] [2025-01-09 03:05:39,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:05:39,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:39,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 03:05:39,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 03:05:39,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:39,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:39,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:39,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307954888] [2025-01-09 03:05:39,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307954888] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:39,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202724843] [2025-01-09 03:05:39,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:05:39,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:39,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:39,765 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:39,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 03:05:39,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 03:05:39,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 03:05:39,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:39,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:39,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 03:05:39,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:39,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:39,834 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:05:39,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202724843] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:05:39,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:05:39,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-01-09 03:05:39,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389069287] [2025-01-09 03:05:39,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:05:39,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:05:39,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:39,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:05:39,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:05:39,835 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:39,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:39,849 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2025-01-09 03:05:39,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:05:39,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-01-09 03:05:39,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:39,850 INFO L225 Difference]: With dead ends: 33 [2025-01-09 03:05:39,850 INFO L226 Difference]: Without dead ends: 21 [2025-01-09 03:05:39,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:05:39,851 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:39,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 31 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:39,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-01-09 03:05:39,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2025-01-09 03:05:39,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:39,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2025-01-09 03:05:39,857 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 19 [2025-01-09 03:05:39,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:39,857 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2025-01-09 03:05:39,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:39,859 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2025-01-09 03:05:39,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-09 03:05:39,859 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:39,859 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:39,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 03:05:40,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:40,060 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:40,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:40,061 INFO L85 PathProgramCache]: Analyzing trace with hash -675693475, now seen corresponding path program 1 times [2025-01-09 03:05:40,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:40,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853369891] [2025-01-09 03:05:40,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:05:40,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:40,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 03:05:40,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 03:05:40,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:40,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:40,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:05:40,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:40,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853369891] [2025-01-09 03:05:40,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853369891] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:40,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632714777] [2025-01-09 03:05:40,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:05:40,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:40,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:40,279 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:40,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 03:05:40,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 03:05:40,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 03:05:40,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:40,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:40,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-01-09 03:05:40,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:05:40,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:40,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:05:40,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632714777] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:40,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:40,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2025-01-09 03:05:40,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936995253] [2025-01-09 03:05:40,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:40,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 03:05:40,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:40,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 03:05:40,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2025-01-09 03:05:40,548 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:40,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:40,721 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2025-01-09 03:05:40,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 03:05:40,721 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-01-09 03:05:40,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:40,722 INFO L225 Difference]: With dead ends: 40 [2025-01-09 03:05:40,722 INFO L226 Difference]: Without dead ends: 35 [2025-01-09 03:05:40,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2025-01-09 03:05:40,723 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:40,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 143 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:05:40,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-01-09 03:05:40,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2025-01-09 03:05:40,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:40,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2025-01-09 03:05:40,729 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 20 [2025-01-09 03:05:40,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:40,729 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2025-01-09 03:05:40,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:40,729 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2025-01-09 03:05:40,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-01-09 03:05:40,730 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:40,730 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:40,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 03:05:40,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:40,936 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:40,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:40,937 INFO L85 PathProgramCache]: Analyzing trace with hash -17167756, now seen corresponding path program 2 times [2025-01-09 03:05:40,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:40,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948829480] [2025-01-09 03:05:40,937 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:05:40,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:40,950 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-09 03:05:40,960 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 03:05:40,961 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:05:40,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:40,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:40,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948829480] [2025-01-09 03:05:40,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948829480] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:40,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520446939] [2025-01-09 03:05:40,999 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:05:40,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:40,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:41,001 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:41,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 03:05:41,032 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-09 03:05:41,045 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 03:05:41,046 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:05:41,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:41,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 03:05:41,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:41,084 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:41,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520446939] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:41,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:41,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-01-09 03:05:41,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751651785] [2025-01-09 03:05:41,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:41,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 03:05:41,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:41,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 03:05:41,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-01-09 03:05:41,112 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:41,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:41,141 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2025-01-09 03:05:41,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 03:05:41,142 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-01-09 03:05:41,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:41,142 INFO L225 Difference]: With dead ends: 51 [2025-01-09 03:05:41,142 INFO L226 Difference]: Without dead ends: 38 [2025-01-09 03:05:41,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-01-09 03:05:41,143 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:41,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:41,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-01-09 03:05:41,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2025-01-09 03:05:41,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 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) [2025-01-09 03:05:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2025-01-09 03:05:41,150 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 21 [2025-01-09 03:05:41,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:41,150 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2025-01-09 03:05:41,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:41,150 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2025-01-09 03:05:41,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-01-09 03:05:41,150 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:41,150 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:41,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 03:05:41,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 03:05:41,356 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:41,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:41,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2023410554, now seen corresponding path program 3 times [2025-01-09 03:05:41,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:41,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707829060] [2025-01-09 03:05:41,357 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:05:41,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:41,363 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-01-09 03:05:41,369 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 03:05:41,370 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 03:05:41,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:41,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:41,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707829060] [2025-01-09 03:05:41,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707829060] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:41,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587109982] [2025-01-09 03:05:41,524 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:05:41,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:41,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:41,526 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:41,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 03:05:41,566 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-01-09 03:05:41,580 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 03:05:41,580 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 03:05:41,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:41,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 03:05:41,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:41,653 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:41,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587109982] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:41,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:41,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-01-09 03:05:41,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219043969] [2025-01-09 03:05:41,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:41,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 03:05:41,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:41,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 03:05:41,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-01-09 03:05:41,715 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:41,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:41,780 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2025-01-09 03:05:41,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:05:41,781 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-01-09 03:05:41,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:41,781 INFO L225 Difference]: With dead ends: 52 [2025-01-09 03:05:41,781 INFO L226 Difference]: Without dead ends: 44 [2025-01-09 03:05:41,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-01-09 03:05:41,782 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:41,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 101 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:41,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-01-09 03:05:41,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2025-01-09 03:05:41,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 43 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) [2025-01-09 03:05:41,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 57 transitions. [2025-01-09 03:05:41,787 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 57 transitions. Word has length 21 [2025-01-09 03:05:41,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:41,787 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 57 transitions. [2025-01-09 03:05:41,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:41,788 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 57 transitions. [2025-01-09 03:05:41,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-01-09 03:05:41,788 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:41,788 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:41,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 03:05:41,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-09 03:05:41,989 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:41,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:41,990 INFO L85 PathProgramCache]: Analyzing trace with hash 469111356, now seen corresponding path program 4 times [2025-01-09 03:05:41,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:41,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101545569] [2025-01-09 03:05:41,990 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:05:41,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:41,994 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-01-09 03:05:41,997 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 03:05:41,997 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:05:41,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:42,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:42,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:42,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101545569] [2025-01-09 03:05:42,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101545569] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:42,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262045312] [2025-01-09 03:05:42,027 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:05:42,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:42,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:42,029 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:42,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 03:05:42,060 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-01-09 03:05:42,073 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 03:05:42,073 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:05:42,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:42,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 03:05:42,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:42,096 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:42,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262045312] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:42,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:42,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2025-01-09 03:05:42,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982444501] [2025-01-09 03:05:42,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:42,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 03:05:42,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:42,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 03:05:42,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:05:42,111 INFO L87 Difference]: Start difference. First operand 44 states and 57 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:42,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:42,126 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2025-01-09 03:05:42,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 03:05:42,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-01-09 03:05:42,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:42,127 INFO L225 Difference]: With dead ends: 63 [2025-01-09 03:05:42,127 INFO L226 Difference]: Without dead ends: 53 [2025-01-09 03:05:42,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:05:42,128 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:42,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:42,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-01-09 03:05:42,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2025-01-09 03:05:42,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 52 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:42,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 69 transitions. [2025-01-09 03:05:42,134 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 69 transitions. Word has length 21 [2025-01-09 03:05:42,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:42,134 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 69 transitions. [2025-01-09 03:05:42,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:42,134 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 69 transitions. [2025-01-09 03:05:42,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-01-09 03:05:42,135 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:42,135 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:42,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 03:05:42,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-09 03:05:42,336 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:42,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:42,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1010036874, now seen corresponding path program 5 times [2025-01-09 03:05:42,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:42,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97351900] [2025-01-09 03:05:42,337 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:05:42,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:42,342 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-09 03:05:42,345 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 03:05:42,345 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:05:42,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:42,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:42,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97351900] [2025-01-09 03:05:42,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97351900] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:42,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150618307] [2025-01-09 03:05:42,455 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:05:42,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:42,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:42,457 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:42,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 03:05:42,498 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-09 03:05:42,511 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 03:05:42,511 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:05:42,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:42,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 03:05:42,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:42,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:42,588 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:42,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150618307] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:42,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:42,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-01-09 03:05:42,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369333919] [2025-01-09 03:05:42,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:42,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 03:05:42,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:42,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 03:05:42,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-01-09 03:05:42,660 INFO L87 Difference]: Start difference. First operand 53 states and 69 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:42,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:42,729 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2025-01-09 03:05:42,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:05:42,729 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-01-09 03:05:42,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:42,730 INFO L225 Difference]: With dead ends: 64 [2025-01-09 03:05:42,730 INFO L226 Difference]: Without dead ends: 55 [2025-01-09 03:05:42,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-01-09 03:05:42,730 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:42,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:42,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-01-09 03:05:42,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2025-01-09 03:05:42,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 54 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:42,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2025-01-09 03:05:42,742 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 21 [2025-01-09 03:05:42,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:42,742 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2025-01-09 03:05:42,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:42,742 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2025-01-09 03:05:42,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-09 03:05:42,743 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:42,743 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:42,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 03:05:42,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:42,944 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:42,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:42,944 INFO L85 PathProgramCache]: Analyzing trace with hash -916005319, now seen corresponding path program 6 times [2025-01-09 03:05:42,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:42,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730985960] [2025-01-09 03:05:42,944 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:05:42,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:42,949 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-01-09 03:05:42,954 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 03:05:42,954 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 03:05:42,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 03:05:43,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:43,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730985960] [2025-01-09 03:05:43,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730985960] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:43,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005862480] [2025-01-09 03:05:43,073 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:05:43,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:43,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:43,077 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:43,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 03:05:43,111 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-01-09 03:05:43,125 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 03:05:43,125 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 03:05:43,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:43,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 03:05:43,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:05:43,191 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:43,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:05:43,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005862480] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:43,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:43,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2025-01-09 03:05:43,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001638856] [2025-01-09 03:05:43,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:43,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 03:05:43,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:43,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 03:05:43,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2025-01-09 03:05:43,283 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 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) [2025-01-09 03:05:43,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:43,356 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2025-01-09 03:05:43,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:05:43,356 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 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 22 [2025-01-09 03:05:43,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:43,357 INFO L225 Difference]: With dead ends: 71 [2025-01-09 03:05:43,357 INFO L226 Difference]: Without dead ends: 59 [2025-01-09 03:05:43,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2025-01-09 03:05:43,358 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:43,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 125 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:05:43,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-01-09 03:05:43,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2025-01-09 03:05:43,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.290909090909091) internal successors, (71), 55 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:43,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2025-01-09 03:05:43,365 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 22 [2025-01-09 03:05:43,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:43,366 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2025-01-09 03:05:43,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 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) [2025-01-09 03:05:43,366 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2025-01-09 03:05:43,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-09 03:05:43,366 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:43,366 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:43,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 03:05:43,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-09 03:05:43,567 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:43,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:43,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1673020223, now seen corresponding path program 7 times [2025-01-09 03:05:43,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:43,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759727981] [2025-01-09 03:05:43,568 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:05:43,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:43,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 03:05:43,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 03:05:43,583 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:43,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:43,676 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:05:43,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:43,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759727981] [2025-01-09 03:05:43,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759727981] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:43,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275275771] [2025-01-09 03:05:43,677 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:05:43,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:43,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:43,679 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:43,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 03:05:43,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 03:05:43,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 03:05:43,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:43,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:43,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 03:05:43,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:43,759 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:05:43,759 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:43,808 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:05:43,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275275771] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:43,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:43,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-01-09 03:05:43,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686307679] [2025-01-09 03:05:43,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:43,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 03:05:43,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:43,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 03:05:43,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-01-09 03:05:43,809 INFO L87 Difference]: Start difference. First operand 56 states and 71 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) [2025-01-09 03:05:43,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:43,852 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2025-01-09 03:05:43,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:05:43,853 INFO L78 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 22 [2025-01-09 03:05:43,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:43,853 INFO L225 Difference]: With dead ends: 74 [2025-01-09 03:05:43,853 INFO L226 Difference]: Without dead ends: 54 [2025-01-09 03:05:43,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-01-09 03:05:43,854 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:43,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:43,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-01-09 03:05:43,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2025-01-09 03:05:43,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 53 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) [2025-01-09 03:05:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2025-01-09 03:05:43,860 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 22 [2025-01-09 03:05:43,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:43,860 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2025-01-09 03:05:43,860 INFO L472 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) [2025-01-09 03:05:43,860 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2025-01-09 03:05:43,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-09 03:05:43,861 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:43,861 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:43,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 03:05:44,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:44,065 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:44,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:44,066 INFO L85 PathProgramCache]: Analyzing trace with hash 248699777, now seen corresponding path program 8 times [2025-01-09 03:05:44,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:44,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270878035] [2025-01-09 03:05:44,066 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:05:44,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:44,069 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 03:05:44,074 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 03:05:44,074 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:05:44,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:44,253 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:05:44,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:44,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270878035] [2025-01-09 03:05:44,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270878035] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:44,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835109294] [2025-01-09 03:05:44,254 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:05:44,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:44,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:44,259 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:44,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 03:05:44,297 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 03:05:44,310 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 03:05:44,310 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:05:44,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:44,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-09 03:05:44,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:44,456 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:05:44,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:05:44,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835109294] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:44,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:44,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 26 [2025-01-09 03:05:44,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612561706] [2025-01-09 03:05:44,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:44,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-09 03:05:44,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:44,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-09 03:05:44,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2025-01-09 03:05:44,554 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:44,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:44,825 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2025-01-09 03:05:44,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 03:05:44,825 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-01-09 03:05:44,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:44,826 INFO L225 Difference]: With dead ends: 86 [2025-01-09 03:05:44,826 INFO L226 Difference]: Without dead ends: 79 [2025-01-09 03:05:44,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 03:05:44,827 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:44,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 254 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:05:44,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-01-09 03:05:44,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2025-01-09 03:05:44,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 70 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:44,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 89 transitions. [2025-01-09 03:05:44,838 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 89 transitions. Word has length 22 [2025-01-09 03:05:44,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:44,838 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 89 transitions. [2025-01-09 03:05:44,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:44,839 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 89 transitions. [2025-01-09 03:05:44,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 03:05:44,841 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:44,841 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:44,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 03:05:45,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-09 03:05:45,041 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:45,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:45,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2098379044, now seen corresponding path program 9 times [2025-01-09 03:05:45,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:45,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418223768] [2025-01-09 03:05:45,042 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:05:45,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:45,046 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 2 equivalence classes. [2025-01-09 03:05:45,053 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 03:05:45,053 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 03:05:45,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:45,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:05:45,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:45,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418223768] [2025-01-09 03:05:45,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418223768] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:45,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396638896] [2025-01-09 03:05:45,115 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:05:45,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:45,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:45,121 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:45,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 03:05:45,152 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 2 equivalence classes. [2025-01-09 03:05:45,168 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 03:05:45,168 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 03:05:45,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:45,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 03:05:45,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:05:45,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:05:45,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396638896] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:45,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:45,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-01-09 03:05:45,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007748185] [2025-01-09 03:05:45,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:45,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 03:05:45,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:45,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 03:05:45,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2025-01-09 03:05:45,229 INFO L87 Difference]: Start difference. First operand 71 states and 89 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:45,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:45,265 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2025-01-09 03:05:45,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:05:45,266 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-01-09 03:05:45,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:45,267 INFO L225 Difference]: With dead ends: 78 [2025-01-09 03:05:45,267 INFO L226 Difference]: Without dead ends: 73 [2025-01-09 03:05:45,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2025-01-09 03:05:45,268 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:45,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 83 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:45,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-01-09 03:05:45,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2025-01-09 03:05:45,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 53 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) [2025-01-09 03:05:45,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2025-01-09 03:05:45,284 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 23 [2025-01-09 03:05:45,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:45,284 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2025-01-09 03:05:45,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:45,284 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2025-01-09 03:05:45,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 03:05:45,284 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:45,285 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:45,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-09 03:05:45,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:45,485 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:45,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:45,486 INFO L85 PathProgramCache]: Analyzing trace with hash 527786396, now seen corresponding path program 10 times [2025-01-09 03:05:45,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:45,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124105407] [2025-01-09 03:05:45,486 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:05:45,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:45,491 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-01-09 03:05:45,496 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 03:05:45,496 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:05:45,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:05:45,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:45,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124105407] [2025-01-09 03:05:45,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124105407] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:45,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105143328] [2025-01-09 03:05:45,534 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:05:45,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:45,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:45,536 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:45,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 03:05:45,570 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-01-09 03:05:45,586 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 03:05:45,586 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:05:45,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:45,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 03:05:45,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:05:45,612 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:45,637 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:05:45,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105143328] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:45,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:45,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2025-01-09 03:05:45,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23480874] [2025-01-09 03:05:45,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:45,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 03:05:45,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:45,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 03:05:45,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:05:45,639 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:45,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:45,669 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2025-01-09 03:05:45,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:05:45,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-01-09 03:05:45,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:45,670 INFO L225 Difference]: With dead ends: 77 [2025-01-09 03:05:45,671 INFO L226 Difference]: Without dead ends: 56 [2025-01-09 03:05:45,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2025-01-09 03:05:45,671 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:45,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 66 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:45,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-01-09 03:05:45,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2025-01-09 03:05:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 55 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) [2025-01-09 03:05:45,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2025-01-09 03:05:45,689 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 23 [2025-01-09 03:05:45,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:45,689 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2025-01-09 03:05:45,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:45,689 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2025-01-09 03:05:45,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 03:05:45,690 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:45,690 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:45,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-09 03:05:45,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:45,891 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:45,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:45,891 INFO L85 PathProgramCache]: Analyzing trace with hash 614830294, now seen corresponding path program 11 times [2025-01-09 03:05:45,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:45,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184186596] [2025-01-09 03:05:45,891 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:05:45,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:45,896 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-01-09 03:05:45,902 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 03:05:45,904 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 03:05:45,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:46,000 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:46,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:46,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184186596] [2025-01-09 03:05:46,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184186596] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:46,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579255191] [2025-01-09 03:05:46,001 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:05:46,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:46,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:46,003 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:46,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 03:05:46,036 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-01-09 03:05:46,050 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 03:05:46,050 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 03:05:46,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:46,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 03:05:46,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:46,179 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:46,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:46,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579255191] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:46,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:46,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2025-01-09 03:05:46,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212862446] [2025-01-09 03:05:46,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:46,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 03:05:46,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:46,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 03:05:46,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2025-01-09 03:05:46,289 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:46,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:46,411 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2025-01-09 03:05:46,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 03:05:46,411 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-01-09 03:05:46,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:46,411 INFO L225 Difference]: With dead ends: 81 [2025-01-09 03:05:46,412 INFO L226 Difference]: Without dead ends: 61 [2025-01-09 03:05:46,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2025-01-09 03:05:46,412 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:46,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 134 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:05:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-01-09 03:05:46,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2025-01-09 03:05:46,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 58 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:46,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2025-01-09 03:05:46,426 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 23 [2025-01-09 03:05:46,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:46,426 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2025-01-09 03:05:46,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:46,426 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2025-01-09 03:05:46,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 03:05:46,426 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:46,427 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:46,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-09 03:05:46,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:46,627 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:46,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:46,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1067240538, now seen corresponding path program 12 times [2025-01-09 03:05:46,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:46,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565973229] [2025-01-09 03:05:46,628 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:05:46,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:46,632 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 3 equivalence classes. [2025-01-09 03:05:46,637 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 03:05:46,637 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 03:05:46,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:46,775 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:46,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:46,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565973229] [2025-01-09 03:05:46,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565973229] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:46,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366324856] [2025-01-09 03:05:46,775 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:05:46,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:46,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:46,778 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:46,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 03:05:46,816 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 3 equivalence classes. [2025-01-09 03:05:46,829 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 03:05:46,829 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 03:05:46,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:46,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 03:05:46,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:46,953 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:46,953 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:47,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366324856] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:47,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:47,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2025-01-09 03:05:47,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136370829] [2025-01-09 03:05:47,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:47,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 03:05:47,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:47,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 03:05:47,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2025-01-09 03:05:47,074 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 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) [2025-01-09 03:05:47,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:47,206 INFO L93 Difference]: Finished difference Result 71 states and 87 transitions. [2025-01-09 03:05:47,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 03:05:47,207 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 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 [2025-01-09 03:05:47,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:47,207 INFO L225 Difference]: With dead ends: 71 [2025-01-09 03:05:47,207 INFO L226 Difference]: Without dead ends: 61 [2025-01-09 03:05:47,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2025-01-09 03:05:47,208 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:47,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 207 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:05:47,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-01-09 03:05:47,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2025-01-09 03:05:47,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.25) internal successors, (75), 60 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:47,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2025-01-09 03:05:47,217 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 23 [2025-01-09 03:05:47,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:47,217 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2025-01-09 03:05:47,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 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) [2025-01-09 03:05:47,217 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2025-01-09 03:05:47,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-09 03:05:47,217 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:47,217 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:47,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-09 03:05:47,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-01-09 03:05:47,418 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:47,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:47,418 INFO L85 PathProgramCache]: Analyzing trace with hash -684468323, now seen corresponding path program 13 times [2025-01-09 03:05:47,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:47,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55345288] [2025-01-09 03:05:47,418 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:05:47,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:47,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 03:05:47,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 03:05:47,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:47,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:47,592 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:05:47,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:47,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55345288] [2025-01-09 03:05:47,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55345288] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:47,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589472236] [2025-01-09 03:05:47,592 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:05:47,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:47,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:47,594 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:47,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 03:05:47,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 03:05:47,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 03:05:47,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:47,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:47,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-09 03:05:47,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:47,793 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:05:47,793 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:05:47,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589472236] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:47,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:47,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 27 [2025-01-09 03:05:47,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476091697] [2025-01-09 03:05:47,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:47,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-09 03:05:47,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:47,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-09 03:05:47,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2025-01-09 03:05:47,886 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 27 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) [2025-01-09 03:05:48,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:48,068 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2025-01-09 03:05:48,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 03:05:48,068 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 27 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 24 [2025-01-09 03:05:48,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:48,069 INFO L225 Difference]: With dead ends: 78 [2025-01-09 03:05:48,069 INFO L226 Difference]: Without dead ends: 73 [2025-01-09 03:05:48,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=1074, Unknown=0, NotChecked=0, Total=1190 [2025-01-09 03:05:48,070 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 28 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:48,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 191 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:05:48,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-01-09 03:05:48,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2025-01-09 03:05:48,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.25) internal successors, (85), 68 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2025-01-09 03:05:48,096 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 24 [2025-01-09 03:05:48,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:48,096 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2025-01-09 03:05:48,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 27 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) [2025-01-09 03:05:48,096 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2025-01-09 03:05:48,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-09 03:05:48,097 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:48,097 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:48,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-09 03:05:48,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:48,297 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:48,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:48,298 INFO L85 PathProgramCache]: Analyzing trace with hash 219790109, now seen corresponding path program 14 times [2025-01-09 03:05:48,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:48,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4485315] [2025-01-09 03:05:48,298 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:05:48,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:48,302 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-01-09 03:05:48,306 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 03:05:48,307 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:05:48,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:48,546 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:05:48,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:48,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4485315] [2025-01-09 03:05:48,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4485315] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:48,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779818725] [2025-01-09 03:05:48,546 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:05:48,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:48,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:48,553 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:48,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 03:05:48,587 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-01-09 03:05:48,600 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 03:05:48,600 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:05:48,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:48,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-01-09 03:05:48,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:48,719 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:05:48,719 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:05:48,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779818725] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:48,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:48,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 29 [2025-01-09 03:05:48,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281905579] [2025-01-09 03:05:48,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:48,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 03:05:48,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:48,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 03:05:48,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=742, Unknown=0, NotChecked=0, Total=812 [2025-01-09 03:05:48,833 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand has 29 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 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) [2025-01-09 03:05:49,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:49,129 INFO L93 Difference]: Finished difference Result 91 states and 110 transitions. [2025-01-09 03:05:49,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-09 03:05:49,129 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 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 24 [2025-01-09 03:05:49,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:49,130 INFO L225 Difference]: With dead ends: 91 [2025-01-09 03:05:49,130 INFO L226 Difference]: Without dead ends: 84 [2025-01-09 03:05:49,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=1289, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 03:05:49,130 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:49,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 386 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:05:49,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-01-09 03:05:49,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2025-01-09 03:05:49,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.24) internal successors, (93), 75 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:49,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2025-01-09 03:05:49,145 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 24 [2025-01-09 03:05:49,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:49,145 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2025-01-09 03:05:49,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 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) [2025-01-09 03:05:49,145 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2025-01-09 03:05:49,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-09 03:05:49,145 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:49,145 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:49,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-09 03:05:49,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:49,348 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:49,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:49,348 INFO L85 PathProgramCache]: Analyzing trace with hash 390341052, now seen corresponding path program 15 times [2025-01-09 03:05:49,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:49,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110155884] [2025-01-09 03:05:49,348 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:05:49,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:49,353 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 3 equivalence classes. [2025-01-09 03:05:49,360 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 03:05:49,360 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 03:05:49,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:49,401 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:05:49,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:49,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110155884] [2025-01-09 03:05:49,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110155884] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:49,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459205240] [2025-01-09 03:05:49,401 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:05:49,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:49,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:49,406 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:49,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-09 03:05:49,441 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 3 equivalence classes. [2025-01-09 03:05:49,455 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 03:05:49,455 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 03:05:49,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:49,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 03:05:49,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:49,492 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:05:49,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:49,523 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:05:49,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459205240] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:49,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:49,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-01-09 03:05:49,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849892349] [2025-01-09 03:05:49,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:49,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 03:05:49,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:49,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 03:05:49,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2025-01-09 03:05:49,524 INFO L87 Difference]: Start difference. First operand 76 states and 93 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) [2025-01-09 03:05:49,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:49,580 INFO L93 Difference]: Finished difference Result 120 states and 151 transitions. [2025-01-09 03:05:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 03:05:49,581 INFO L78 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 25 [2025-01-09 03:05:49,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:49,581 INFO L225 Difference]: With dead ends: 120 [2025-01-09 03:05:49,581 INFO L226 Difference]: Without dead ends: 90 [2025-01-09 03:05:49,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2025-01-09 03:05:49,581 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:49,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 87 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:49,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-01-09 03:05:49,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2025-01-09 03:05:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.247191011235955) internal successors, (111), 89 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:49,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 111 transitions. [2025-01-09 03:05:49,593 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 111 transitions. Word has length 25 [2025-01-09 03:05:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:49,594 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 111 transitions. [2025-01-09 03:05:49,594 INFO L472 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) [2025-01-09 03:05:49,594 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 111 transitions. [2025-01-09 03:05:49,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-09 03:05:49,594 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:49,594 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:49,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-01-09 03:05:49,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:49,794 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:49,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:49,795 INFO L85 PathProgramCache]: Analyzing trace with hash 197091068, now seen corresponding path program 16 times [2025-01-09 03:05:49,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:49,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322039021] [2025-01-09 03:05:49,795 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:05:49,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:49,802 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-01-09 03:05:49,804 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 03:05:49,804 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:05:49,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:05:49,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:49,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322039021] [2025-01-09 03:05:49,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322039021] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:49,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802574895] [2025-01-09 03:05:49,837 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:05:49,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:49,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:49,842 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:49,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-09 03:05:49,874 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-01-09 03:05:49,887 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 03:05:49,887 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:05:49,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:49,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 03:05:49,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:49,924 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:05:49,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:49,942 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:05:49,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802574895] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:49,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:49,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2025-01-09 03:05:49,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906564130] [2025-01-09 03:05:49,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:49,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 03:05:49,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:49,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 03:05:49,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-01-09 03:05:49,943 INFO L87 Difference]: Start difference. First operand 90 states and 111 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:49,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:49,984 INFO L93 Difference]: Finished difference Result 115 states and 142 transitions. [2025-01-09 03:05:49,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 03:05:49,985 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-01-09 03:05:49,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:49,985 INFO L225 Difference]: With dead ends: 115 [2025-01-09 03:05:49,985 INFO L226 Difference]: Without dead ends: 104 [2025-01-09 03:05:49,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2025-01-09 03:05:49,986 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:49,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 107 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:49,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-01-09 03:05:49,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2025-01-09 03:05:49,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.2574257425742574) internal successors, (127), 101 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:49,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 127 transitions. [2025-01-09 03:05:49,998 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 127 transitions. Word has length 25 [2025-01-09 03:05:49,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:49,998 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 127 transitions. [2025-01-09 03:05:49,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:49,999 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 127 transitions. [2025-01-09 03:05:49,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-09 03:05:49,999 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:49,999 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:50,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-09 03:05:50,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-01-09 03:05:50,199 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:50,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:50,200 INFO L85 PathProgramCache]: Analyzing trace with hash -281369414, now seen corresponding path program 17 times [2025-01-09 03:05:50,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:50,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242942959] [2025-01-09 03:05:50,200 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:05:50,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:50,203 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 3 equivalence classes. [2025-01-09 03:05:50,205 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 03:05:50,206 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 03:05:50,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:50,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:50,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242942959] [2025-01-09 03:05:50,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242942959] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:50,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113231668] [2025-01-09 03:05:50,283 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:05:50,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:50,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:50,288 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:50,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-09 03:05:50,320 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 3 equivalence classes. [2025-01-09 03:05:50,333 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 03:05:50,333 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 03:05:50,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:50,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 03:05:50,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:50,480 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:50,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113231668] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:50,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:50,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-01-09 03:05:50,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416051863] [2025-01-09 03:05:50,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:50,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 03:05:50,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:50,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 03:05:50,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2025-01-09 03:05:50,601 INFO L87 Difference]: Start difference. First operand 102 states and 127 transitions. Second operand has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:50,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:50,771 INFO L93 Difference]: Finished difference Result 144 states and 179 transitions. [2025-01-09 03:05:50,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 03:05:50,771 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-01-09 03:05:50,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:50,773 INFO L225 Difference]: With dead ends: 144 [2025-01-09 03:05:50,773 INFO L226 Difference]: Without dead ends: 121 [2025-01-09 03:05:50,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2025-01-09 03:05:50,773 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:50,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 162 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:05:50,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-01-09 03:05:50,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 111. [2025-01-09 03:05:50,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.2727272727272727) internal successors, (140), 110 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:50,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 140 transitions. [2025-01-09 03:05:50,789 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 140 transitions. Word has length 25 [2025-01-09 03:05:50,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:50,789 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 140 transitions. [2025-01-09 03:05:50,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:50,789 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 140 transitions. [2025-01-09 03:05:50,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-09 03:05:50,790 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:50,790 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:50,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-01-09 03:05:50,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:50,990 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:50,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:50,991 INFO L85 PathProgramCache]: Analyzing trace with hash 858446262, now seen corresponding path program 18 times [2025-01-09 03:05:50,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:50,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484778562] [2025-01-09 03:05:50,991 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:05:50,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:50,994 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 3 equivalence classes. [2025-01-09 03:05:50,997 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 03:05:50,998 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 03:05:50,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:51,109 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:51,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:51,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484778562] [2025-01-09 03:05:51,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484778562] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:51,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622109940] [2025-01-09 03:05:51,110 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:05:51,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:51,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:51,117 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:51,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-09 03:05:51,153 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 3 equivalence classes. [2025-01-09 03:05:51,167 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 03:05:51,167 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 03:05:51,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:51,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 03:05:51,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:51,334 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:51,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:51,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622109940] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:51,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:51,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2025-01-09 03:05:51,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370768938] [2025-01-09 03:05:51,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:51,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-09 03:05:51,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:51,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-09 03:05:51,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2025-01-09 03:05:51,479 INFO L87 Difference]: Start difference. First operand 111 states and 140 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) [2025-01-09 03:05:51,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:51,696 INFO L93 Difference]: Finished difference Result 125 states and 157 transitions. [2025-01-09 03:05:51,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 03:05:51,696 INFO L78 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 [2025-01-09 03:05:51,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:51,697 INFO L225 Difference]: With dead ends: 125 [2025-01-09 03:05:51,697 INFO L226 Difference]: Without dead ends: 114 [2025-01-09 03:05:51,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=714, Unknown=0, NotChecked=0, Total=812 [2025-01-09 03:05:51,698 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:51,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 246 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:05:51,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2025-01-09 03:05:51,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2025-01-09 03:05:51,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.2654867256637168) internal successors, (143), 113 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:51,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 143 transitions. [2025-01-09 03:05:51,730 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 143 transitions. Word has length 25 [2025-01-09 03:05:51,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:51,730 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 143 transitions. [2025-01-09 03:05:51,730 INFO L472 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) [2025-01-09 03:05:51,732 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 143 transitions. [2025-01-09 03:05:51,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-01-09 03:05:51,733 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:51,733 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:51,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-01-09 03:05:51,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-01-09 03:05:51,934 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:51,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:51,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1944554241, now seen corresponding path program 19 times [2025-01-09 03:05:51,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:51,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984807433] [2025-01-09 03:05:51,934 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:05:51,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:51,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-09 03:05:51,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 03:05:51,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:51,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 03:05:52,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:52,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984807433] [2025-01-09 03:05:52,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984807433] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:52,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449960042] [2025-01-09 03:05:52,039 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:05:52,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:52,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:52,044 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:52,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-09 03:05:52,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-09 03:05:52,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 03:05:52,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:52,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:52,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 03:05:52,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:52,189 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-01-09 03:05:52,189 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:52,287 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-01-09 03:05:52,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449960042] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:52,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:52,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2025-01-09 03:05:52,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134737025] [2025-01-09 03:05:52,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:52,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 03:05:52,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:52,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 03:05:52,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2025-01-09 03:05:52,290 INFO L87 Difference]: Start difference. First operand 114 states and 143 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:52,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:52,429 INFO L93 Difference]: Finished difference Result 147 states and 179 transitions. [2025-01-09 03:05:52,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 03:05:52,429 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-01-09 03:05:52,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:52,430 INFO L225 Difference]: With dead ends: 147 [2025-01-09 03:05:52,430 INFO L226 Difference]: Without dead ends: 130 [2025-01-09 03:05:52,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2025-01-09 03:05:52,431 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:52,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 219 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:05:52,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-01-09 03:05:52,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2025-01-09 03:05:52,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.232) internal successors, (154), 125 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:52,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 154 transitions. [2025-01-09 03:05:52,455 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 154 transitions. Word has length 26 [2025-01-09 03:05:52,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:52,455 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 154 transitions. [2025-01-09 03:05:52,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:52,456 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 154 transitions. [2025-01-09 03:05:52,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-01-09 03:05:52,456 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:52,456 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:52,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-01-09 03:05:52,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-01-09 03:05:52,657 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:52,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:52,657 INFO L85 PathProgramCache]: Analyzing trace with hash -871755911, now seen corresponding path program 20 times [2025-01-09 03:05:52,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:52,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582618781] [2025-01-09 03:05:52,657 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:05:52,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:52,661 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-01-09 03:05:52,665 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 03:05:52,665 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:05:52,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:52,814 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 03:05:52,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:52,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582618781] [2025-01-09 03:05:52,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582618781] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:52,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931676439] [2025-01-09 03:05:52,814 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:05:52,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:52,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:52,816 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:52,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-09 03:05:52,878 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-01-09 03:05:52,894 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 03:05:52,894 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:05:52,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:52,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 03:05:52,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-01-09 03:05:52,989 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-01-09 03:05:53,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931676439] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:53,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:53,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2025-01-09 03:05:53,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115756527] [2025-01-09 03:05:53,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:53,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 03:05:53,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:53,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 03:05:53,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2025-01-09 03:05:53,075 INFO L87 Difference]: Start difference. First operand 126 states and 154 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:53,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:53,211 INFO L93 Difference]: Finished difference Result 154 states and 187 transitions. [2025-01-09 03:05:53,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 03:05:53,215 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-01-09 03:05:53,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:53,215 INFO L225 Difference]: With dead ends: 154 [2025-01-09 03:05:53,215 INFO L226 Difference]: Without dead ends: 123 [2025-01-09 03:05:53,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2025-01-09 03:05:53,216 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:53,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 187 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:05:53,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-01-09 03:05:53,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2025-01-09 03:05:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.2049180327868851) internal successors, (147), 122 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:53,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 147 transitions. [2025-01-09 03:05:53,245 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 147 transitions. Word has length 26 [2025-01-09 03:05:53,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:53,245 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 147 transitions. [2025-01-09 03:05:53,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:53,245 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 147 transitions. [2025-01-09 03:05:53,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-01-09 03:05:53,246 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:53,246 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:53,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-01-09 03:05:53,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:53,447 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:53,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:53,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1477344065, now seen corresponding path program 21 times [2025-01-09 03:05:53,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:53,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909498700] [2025-01-09 03:05:53,448 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:05:53,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:53,451 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-01-09 03:05:53,455 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 03:05:53,455 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 03:05:53,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:53,644 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:05:53,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:53,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909498700] [2025-01-09 03:05:53,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909498700] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:53,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078618173] [2025-01-09 03:05:53,645 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:05:53,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:53,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:53,646 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:53,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-09 03:05:53,689 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-01-09 03:05:53,702 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 03:05:53,702 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 03:05:53,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:53,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-01-09 03:05:53,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:53,881 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:05:53,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:53,967 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:05:53,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078618173] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:53,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:53,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 30 [2025-01-09 03:05:53,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542614383] [2025-01-09 03:05:53,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:53,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-01-09 03:05:53,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:53,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-01-09 03:05:53,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=793, Unknown=0, NotChecked=0, Total=870 [2025-01-09 03:05:53,969 INFO L87 Difference]: Start difference. First operand 123 states and 147 transitions. Second operand has 30 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:54,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:54,220 INFO L93 Difference]: Finished difference Result 148 states and 175 transitions. [2025-01-09 03:05:54,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-09 03:05:54,220 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-01-09 03:05:54,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:54,221 INFO L225 Difference]: With dead ends: 148 [2025-01-09 03:05:54,221 INFO L226 Difference]: Without dead ends: 130 [2025-01-09 03:05:54,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=1355, Unknown=0, NotChecked=0, Total=1482 [2025-01-09 03:05:54,222 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 35 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:54,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 342 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:05:54,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-01-09 03:05:54,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 123. [2025-01-09 03:05:54,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.2131147540983607) internal successors, (148), 122 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:54,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 148 transitions. [2025-01-09 03:05:54,240 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 148 transitions. Word has length 26 [2025-01-09 03:05:54,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:54,240 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 148 transitions. [2025-01-09 03:05:54,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:54,240 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 148 transitions. [2025-01-09 03:05:54,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-01-09 03:05:54,240 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:54,240 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:54,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-01-09 03:05:54,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:54,441 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:54,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:54,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1957865151, now seen corresponding path program 22 times [2025-01-09 03:05:54,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:54,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495010153] [2025-01-09 03:05:54,441 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:05:54,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:54,444 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-01-09 03:05:54,448 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 03:05:54,448 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:05:54,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:54,640 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:05:54,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:54,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495010153] [2025-01-09 03:05:54,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495010153] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:54,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113672811] [2025-01-09 03:05:54,640 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:05:54,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:54,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:54,642 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:54,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-01-09 03:05:54,703 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-01-09 03:05:54,717 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 03:05:54,717 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:05:54,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:54,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-01-09 03:05:54,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:54,962 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:05:54,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:55,003 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:05:55,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113672811] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:55,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:55,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 31 [2025-01-09 03:05:55,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269420315] [2025-01-09 03:05:55,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:55,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-01-09 03:05:55,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:55,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-01-09 03:05:55,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2025-01-09 03:05:55,005 INFO L87 Difference]: Start difference. First operand 123 states and 148 transitions. Second operand has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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) [2025-01-09 03:05:55,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:55,319 INFO L93 Difference]: Finished difference Result 151 states and 180 transitions. [2025-01-09 03:05:55,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 03:05:55,320 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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 26 [2025-01-09 03:05:55,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:55,320 INFO L225 Difference]: With dead ends: 151 [2025-01-09 03:05:55,320 INFO L226 Difference]: Without dead ends: 144 [2025-01-09 03:05:55,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=1516, Unknown=0, NotChecked=0, Total=1640 [2025-01-09 03:05:55,321 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 40 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:55,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 423 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:05:55,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-01-09 03:05:55,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 130. [2025-01-09 03:05:55,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.2093023255813953) internal successors, (156), 129 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:55,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 156 transitions. [2025-01-09 03:05:55,344 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 156 transitions. Word has length 26 [2025-01-09 03:05:55,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:55,344 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 156 transitions. [2025-01-09 03:05:55,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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) [2025-01-09 03:05:55,344 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 156 transitions. [2025-01-09 03:05:55,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-09 03:05:55,344 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:55,344 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:55,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-01-09 03:05:55,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-01-09 03:05:55,545 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:55,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:55,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1116036252, now seen corresponding path program 23 times [2025-01-09 03:05:55,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:55,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675682842] [2025-01-09 03:05:55,547 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:05:55,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:55,551 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 3 equivalence classes. [2025-01-09 03:05:55,555 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 03:05:55,555 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 03:05:55,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 03:05:55,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:55,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675682842] [2025-01-09 03:05:55,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675682842] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:55,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162225781] [2025-01-09 03:05:55,596 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:05:55,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:55,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:55,598 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:55,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-01-09 03:05:55,637 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 3 equivalence classes. [2025-01-09 03:05:55,652 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 03:05:55,652 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 03:05:55,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:55,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 03:05:55,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 03:05:55,685 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 03:05:55,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162225781] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:55,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:55,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2025-01-09 03:05:55,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918845302] [2025-01-09 03:05:55,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:55,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 03:05:55,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:55,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 03:05:55,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2025-01-09 03:05:55,715 INFO L87 Difference]: Start difference. First operand 130 states and 156 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:55,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:55,777 INFO L93 Difference]: Finished difference Result 140 states and 166 transitions. [2025-01-09 03:05:55,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 03:05:55,777 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-01-09 03:05:55,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:55,778 INFO L225 Difference]: With dead ends: 140 [2025-01-09 03:05:55,778 INFO L226 Difference]: Without dead ends: 135 [2025-01-09 03:05:55,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2025-01-09 03:05:55,778 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 17 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:55,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 113 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:55,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2025-01-09 03:05:55,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 115. [2025-01-09 03:05:55,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.2017543859649122) internal successors, (137), 114 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 137 transitions. [2025-01-09 03:05:55,801 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 137 transitions. Word has length 27 [2025-01-09 03:05:55,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:55,801 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 137 transitions. [2025-01-09 03:05:55,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:55,801 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 137 transitions. [2025-01-09 03:05:55,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-09 03:05:55,802 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:55,802 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:55,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-01-09 03:05:56,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-01-09 03:05:56,002 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:56,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:56,003 INFO L85 PathProgramCache]: Analyzing trace with hash 64212692, now seen corresponding path program 24 times [2025-01-09 03:05:56,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:56,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878699227] [2025-01-09 03:05:56,003 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:05:56,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:56,006 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 3 equivalence classes. [2025-01-09 03:05:56,010 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 03:05:56,010 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 03:05:56,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 03:05:56,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:56,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878699227] [2025-01-09 03:05:56,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878699227] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:56,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346874076] [2025-01-09 03:05:56,089 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:05:56,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:56,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:56,091 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:56,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-01-09 03:05:56,131 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 3 equivalence classes. [2025-01-09 03:05:56,147 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 03:05:56,147 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 03:05:56,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:56,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 03:05:56,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:56,181 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 03:05:56,182 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:56,214 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 03:05:56,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346874076] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:56,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:56,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-01-09 03:05:56,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087301111] [2025-01-09 03:05:56,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:56,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 03:05:56,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:56,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 03:05:56,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2025-01-09 03:05:56,215 INFO L87 Difference]: Start difference. First operand 115 states and 137 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 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) [2025-01-09 03:05:56,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:56,285 INFO L93 Difference]: Finished difference Result 157 states and 188 transitions. [2025-01-09 03:05:56,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 03:05:56,286 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 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 27 [2025-01-09 03:05:56,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:56,287 INFO L225 Difference]: With dead ends: 157 [2025-01-09 03:05:56,287 INFO L226 Difference]: Without dead ends: 119 [2025-01-09 03:05:56,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 43 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2025-01-09 03:05:56,287 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:56,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 84 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:05:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2025-01-09 03:05:56,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2025-01-09 03:05:56,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.194915254237288) internal successors, (141), 118 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:56,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2025-01-09 03:05:56,316 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 27 [2025-01-09 03:05:56,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:56,316 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2025-01-09 03:05:56,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 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) [2025-01-09 03:05:56,316 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2025-01-09 03:05:56,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-09 03:05:56,316 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:56,316 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:56,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-01-09 03:05:56,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:56,517 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:56,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:56,518 INFO L85 PathProgramCache]: Analyzing trace with hash 930794262, now seen corresponding path program 25 times [2025-01-09 03:05:56,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:56,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263806133] [2025-01-09 03:05:56,518 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:05:56,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:56,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 03:05:56,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 03:05:56,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:56,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:56,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:56,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263806133] [2025-01-09 03:05:56,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263806133] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:56,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880253095] [2025-01-09 03:05:56,642 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:05:56,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:56,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:56,644 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:56,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-01-09 03:05:56,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 03:05:56,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 03:05:56,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:05:56,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:56,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 03:05:56,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:56,874 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:57,016 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:57,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880253095] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:57,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:57,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2025-01-09 03:05:57,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286336800] [2025-01-09 03:05:57,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:57,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 03:05:57,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:57,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 03:05:57,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2025-01-09 03:05:57,017 INFO L87 Difference]: Start difference. First operand 119 states and 141 transitions. Second operand has 29 states, 29 states have (on average 1.896551724137931) internal successors, (55), 29 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:57,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:57,280 INFO L93 Difference]: Finished difference Result 171 states and 202 transitions. [2025-01-09 03:05:57,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 03:05:57,280 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.896551724137931) internal successors, (55), 29 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have 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 [2025-01-09 03:05:57,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:57,281 INFO L225 Difference]: With dead ends: 171 [2025-01-09 03:05:57,281 INFO L226 Difference]: Without dead ends: 146 [2025-01-09 03:05:57,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=1155, Unknown=0, NotChecked=0, Total=1332 [2025-01-09 03:05:57,282 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:57,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 204 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:05:57,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-01-09 03:05:57,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 133. [2025-01-09 03:05:57,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.196969696969697) internal successors, (158), 132 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:57,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 158 transitions. [2025-01-09 03:05:57,305 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 158 transitions. Word has length 27 [2025-01-09 03:05:57,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:57,305 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 158 transitions. [2025-01-09 03:05:57,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.896551724137931) internal successors, (55), 29 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:57,305 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 158 transitions. [2025-01-09 03:05:57,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-09 03:05:57,305 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:57,305 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:57,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-01-09 03:05:57,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-01-09 03:05:57,506 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:57,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:57,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1905341850, now seen corresponding path program 26 times [2025-01-09 03:05:57,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:57,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574455343] [2025-01-09 03:05:57,506 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:05:57,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:57,510 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-01-09 03:05:57,513 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 03:05:57,513 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:05:57,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:57,636 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:57,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:57,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574455343] [2025-01-09 03:05:57,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574455343] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:57,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186422006] [2025-01-09 03:05:57,637 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:05:57,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:57,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:57,643 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:57,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-01-09 03:05:57,685 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-01-09 03:05:57,707 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 03:05:57,707 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:05:57,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:57,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 03:05:57,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:57,909 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:57,909 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:05:58,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186422006] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:58,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:58,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2025-01-09 03:05:58,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211621101] [2025-01-09 03:05:58,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:58,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 03:05:58,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:58,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 03:05:58,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812 [2025-01-09 03:05:58,105 INFO L87 Difference]: Start difference. First operand 133 states and 158 transitions. Second operand has 29 states, 29 states have (on average 1.896551724137931) internal successors, (55), 29 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:58,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:58,398 INFO L93 Difference]: Finished difference Result 148 states and 176 transitions. [2025-01-09 03:05:58,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 03:05:58,398 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.896551724137931) internal successors, (55), 29 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have 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 [2025-01-09 03:05:58,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:58,399 INFO L225 Difference]: With dead ends: 148 [2025-01-09 03:05:58,399 INFO L226 Difference]: Without dead ends: 136 [2025-01-09 03:05:58,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=1131, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 03:05:58,399 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:58,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 264 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:05:58,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2025-01-09 03:05:58,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2025-01-09 03:05:58,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.1925925925925926) internal successors, (161), 135 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:58,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 161 transitions. [2025-01-09 03:05:58,424 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 161 transitions. Word has length 27 [2025-01-09 03:05:58,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:58,424 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 161 transitions. [2025-01-09 03:05:58,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.896551724137931) internal successors, (55), 29 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:58,424 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 161 transitions. [2025-01-09 03:05:58,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-09 03:05:58,425 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:58,425 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:58,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-01-09 03:05:58,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-01-09 03:05:58,629 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:58,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:58,629 INFO L85 PathProgramCache]: Analyzing trace with hash 178158045, now seen corresponding path program 27 times [2025-01-09 03:05:58,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:58,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706287711] [2025-01-09 03:05:58,630 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:05:58,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:58,633 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 3 equivalence classes. [2025-01-09 03:05:58,638 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 03:05:58,638 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 03:05:58,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:05:58,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:58,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706287711] [2025-01-09 03:05:58,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706287711] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:58,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294625884] [2025-01-09 03:05:58,803 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:05:58,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:58,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:58,805 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:58,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-01-09 03:05:58,844 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 3 equivalence classes. [2025-01-09 03:05:58,860 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 03:05:58,860 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 03:05:58,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:58,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-01-09 03:05:58,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:05:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:05:59,080 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:05:59,193 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:05:59,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294625884] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:05:59,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:05:59,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 32 [2025-01-09 03:05:59,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362403492] [2025-01-09 03:05:59,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:05:59,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-09 03:05:59,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:05:59,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-09 03:05:59,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2025-01-09 03:05:59,194 INFO L87 Difference]: Start difference. First operand 136 states and 161 transitions. Second operand has 32 states, 32 states have (on average 1.375) internal successors, (44), 32 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:59,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:05:59,422 INFO L93 Difference]: Finished difference Result 155 states and 183 transitions. [2025-01-09 03:05:59,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-09 03:05:59,427 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.375) internal successors, (44), 32 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-01-09 03:05:59,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:05:59,427 INFO L225 Difference]: With dead ends: 155 [2025-01-09 03:05:59,427 INFO L226 Difference]: Without dead ends: 150 [2025-01-09 03:05:59,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=1501, Unknown=0, NotChecked=0, Total=1640 [2025-01-09 03:05:59,428 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:05:59,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 242 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:05:59,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2025-01-09 03:05:59,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 145. [2025-01-09 03:05:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.1944444444444444) internal successors, (172), 144 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:59,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 172 transitions. [2025-01-09 03:05:59,456 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 172 transitions. Word has length 28 [2025-01-09 03:05:59,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:05:59,457 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 172 transitions. [2025-01-09 03:05:59,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.375) internal successors, (44), 32 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:05:59,457 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 172 transitions. [2025-01-09 03:05:59,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-09 03:05:59,457 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:05:59,457 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:05:59,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-01-09 03:05:59,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:59,658 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:05:59,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:05:59,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1309927261, now seen corresponding path program 28 times [2025-01-09 03:05:59,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:05:59,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56150919] [2025-01-09 03:05:59,658 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:05:59,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:05:59,662 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-01-09 03:05:59,665 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 03:05:59,665 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:05:59,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:05:59,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:05:59,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56150919] [2025-01-09 03:05:59,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56150919] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:05:59,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955058855] [2025-01-09 03:05:59,866 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:05:59,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:05:59,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:05:59,868 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:05:59,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-01-09 03:05:59,923 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-01-09 03:05:59,937 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 03:05:59,937 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:05:59,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:05:59,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-01-09 03:05:59,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:00,159 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:06:00,160 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:06:00,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955058855] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:00,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:00,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 32 [2025-01-09 03:06:00,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329802412] [2025-01-09 03:06:00,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:00,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-09 03:06:00,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:00,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-09 03:06:00,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=913, Unknown=0, NotChecked=0, Total=992 [2025-01-09 03:06:00,213 INFO L87 Difference]: Start difference. First operand 145 states and 172 transitions. Second operand has 32 states, 32 states have (on average 1.34375) internal successors, (43), 32 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) [2025-01-09 03:06:00,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:00,513 INFO L93 Difference]: Finished difference Result 157 states and 183 transitions. [2025-01-09 03:06:00,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 03:06:00,513 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.34375) internal successors, (43), 32 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 28 [2025-01-09 03:06:00,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:00,514 INFO L225 Difference]: With dead ends: 157 [2025-01-09 03:06:00,514 INFO L226 Difference]: Without dead ends: 138 [2025-01-09 03:06:00,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=1589, Unknown=0, NotChecked=0, Total=1722 [2025-01-09 03:06:00,515 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 33 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:00,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 432 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:06:00,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2025-01-09 03:06:00,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2025-01-09 03:06:00,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.197080291970803) internal successors, (164), 137 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:00,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 164 transitions. [2025-01-09 03:06:00,549 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 164 transitions. Word has length 28 [2025-01-09 03:06:00,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:00,549 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 164 transitions. [2025-01-09 03:06:00,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.34375) internal successors, (43), 32 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) [2025-01-09 03:06:00,549 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 164 transitions. [2025-01-09 03:06:00,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-09 03:06:00,550 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:00,550 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:00,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-01-09 03:06:00,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-01-09 03:06:00,754 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:00,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:00,755 INFO L85 PathProgramCache]: Analyzing trace with hash 431127005, now seen corresponding path program 29 times [2025-01-09 03:06:00,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:00,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880076352] [2025-01-09 03:06:00,755 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:06:00,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:00,761 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 4 equivalence classes. [2025-01-09 03:06:00,765 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 03:06:00,765 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 03:06:00,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:06:01,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:01,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880076352] [2025-01-09 03:06:01,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880076352] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:01,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943499281] [2025-01-09 03:06:01,066 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:06:01,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:01,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:01,067 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:01,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-01-09 03:06:01,121 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 4 equivalence classes. [2025-01-09 03:06:01,138 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 03:06:01,138 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 03:06:01,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:01,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-01-09 03:06:01,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:06:01,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:06:01,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943499281] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:01,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:01,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 34 [2025-01-09 03:06:01,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890222906] [2025-01-09 03:06:01,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:01,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-01-09 03:06:01,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:01,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-01-09 03:06:01,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 03:06:01,424 INFO L87 Difference]: Start difference. First operand 138 states and 164 transitions. Second operand has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:01,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:01,808 INFO L93 Difference]: Finished difference Result 168 states and 198 transitions. [2025-01-09 03:06:01,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 03:06:01,809 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-01-09 03:06:01,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:01,810 INFO L225 Difference]: With dead ends: 168 [2025-01-09 03:06:01,810 INFO L226 Difference]: Without dead ends: 161 [2025-01-09 03:06:01,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=135, Invalid=1845, Unknown=0, NotChecked=0, Total=1980 [2025-01-09 03:06:01,810 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 46 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:01,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 529 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:06:01,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2025-01-09 03:06:01,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 145. [2025-01-09 03:06:01,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.1944444444444444) internal successors, (172), 144 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 172 transitions. [2025-01-09 03:06:01,837 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 172 transitions. Word has length 28 [2025-01-09 03:06:01,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:01,837 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 172 transitions. [2025-01-09 03:06:01,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:01,838 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 172 transitions. [2025-01-09 03:06:01,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-09 03:06:01,838 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:01,838 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:01,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-01-09 03:06:02,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-01-09 03:06:02,042 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:02,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:02,043 INFO L85 PathProgramCache]: Analyzing trace with hash -584503308, now seen corresponding path program 30 times [2025-01-09 03:06:02,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:02,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623786810] [2025-01-09 03:06:02,043 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:06:02,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:02,046 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 29 statements into 3 equivalence classes. [2025-01-09 03:06:02,049 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:06:02,049 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 03:06:02,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 03:06:02,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:02,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623786810] [2025-01-09 03:06:02,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623786810] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:02,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718883977] [2025-01-09 03:06:02,112 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:06:02,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:02,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:02,114 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:02,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-01-09 03:06:02,186 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 29 statements into 3 equivalence classes. [2025-01-09 03:06:02,211 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:06:02,211 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 03:06:02,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:02,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 03:06:02,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 03:06:02,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 03:06:02,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718883977] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:02,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:02,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2025-01-09 03:06:02,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314506553] [2025-01-09 03:06:02,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:02,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 03:06:02,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:02,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 03:06:02,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2025-01-09 03:06:02,317 INFO L87 Difference]: Start difference. First operand 145 states and 172 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:02,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:02,404 INFO L93 Difference]: Finished difference Result 222 states and 271 transitions. [2025-01-09 03:06:02,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 03:06:02,405 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-01-09 03:06:02,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:02,405 INFO L225 Difference]: With dead ends: 222 [2025-01-09 03:06:02,405 INFO L226 Difference]: Without dead ends: 172 [2025-01-09 03:06:02,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2025-01-09 03:06:02,406 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:02,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 97 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:06:02,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-01-09 03:06:02,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2025-01-09 03:06:02,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.1988304093567252) internal successors, (205), 171 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:02,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 205 transitions. [2025-01-09 03:06:02,438 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 205 transitions. Word has length 29 [2025-01-09 03:06:02,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:02,438 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 205 transitions. [2025-01-09 03:06:02,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:02,438 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 205 transitions. [2025-01-09 03:06:02,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-09 03:06:02,438 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:02,438 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:02,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-01-09 03:06:02,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-01-09 03:06:02,643 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:02,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:02,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1168704700, now seen corresponding path program 31 times [2025-01-09 03:06:02,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:02,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124994371] [2025-01-09 03:06:02,643 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:06:02,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:02,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 03:06:02,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:06:02,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:06:02,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 03:06:02,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:02,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124994371] [2025-01-09 03:06:02,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124994371] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:02,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909702030] [2025-01-09 03:06:02,696 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:06:02,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:02,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:02,698 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:02,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-01-09 03:06:02,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 03:06:02,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:06:02,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:06:02,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:02,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 03:06:02,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:02,800 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 03:06:02,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 03:06:02,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909702030] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:02,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:02,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2025-01-09 03:06:02,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786358373] [2025-01-09 03:06:02,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:02,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 03:06:02,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:02,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 03:06:02,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2025-01-09 03:06:02,832 INFO L87 Difference]: Start difference. First operand 172 states and 205 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:02,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:02,929 INFO L93 Difference]: Finished difference Result 207 states and 248 transitions. [2025-01-09 03:06:02,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 03:06:02,929 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-01-09 03:06:02,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:02,930 INFO L225 Difference]: With dead ends: 207 [2025-01-09 03:06:02,930 INFO L226 Difference]: Without dead ends: 195 [2025-01-09 03:06:02,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2025-01-09 03:06:02,930 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:02,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 77 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:06:02,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2025-01-09 03:06:02,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 190. [2025-01-09 03:06:02,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.2116402116402116) internal successors, (229), 189 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:02,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 229 transitions. [2025-01-09 03:06:02,966 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 229 transitions. Word has length 29 [2025-01-09 03:06:02,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:02,966 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 229 transitions. [2025-01-09 03:06:02,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:02,966 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 229 transitions. [2025-01-09 03:06:02,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-09 03:06:02,967 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:02,967 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:02,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-01-09 03:06:03,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:03,171 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:03,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:03,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1975107066, now seen corresponding path program 32 times [2025-01-09 03:06:03,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:03,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596458626] [2025-01-09 03:06:03,172 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:06:03,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:03,175 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-01-09 03:06:03,178 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:06:03,178 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:06:03,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:03,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:03,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596458626] [2025-01-09 03:06:03,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596458626] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:03,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724819725] [2025-01-09 03:06:03,315 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:06:03,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:03,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:03,317 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:03,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-01-09 03:06:03,359 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-01-09 03:06:03,375 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:06:03,375 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:06:03,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:03,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 03:06:03,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:03,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:03,820 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:03,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724819725] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:03,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:03,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2025-01-09 03:06:03,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450957138] [2025-01-09 03:06:03,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:03,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-01-09 03:06:03,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:03,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-01-09 03:06:03,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 03:06:03,822 INFO L87 Difference]: Start difference. First operand 190 states and 229 transitions. Second operand has 34 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 34 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) [2025-01-09 03:06:04,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:04,158 INFO L93 Difference]: Finished difference Result 272 states and 324 transitions. [2025-01-09 03:06:04,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 03:06:04,159 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 34 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 29 [2025-01-09 03:06:04,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:04,160 INFO L225 Difference]: With dead ends: 272 [2025-01-09 03:06:04,160 INFO L226 Difference]: Without dead ends: 244 [2025-01-09 03:06:04,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=236, Invalid=1656, Unknown=0, NotChecked=0, Total=1892 [2025-01-09 03:06:04,161 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:04,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 248 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:06:04,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2025-01-09 03:06:04,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 211. [2025-01-09 03:06:04,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 210 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 255 transitions. [2025-01-09 03:06:04,232 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 255 transitions. Word has length 29 [2025-01-09 03:06:04,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:04,232 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 255 transitions. [2025-01-09 03:06:04,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 34 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) [2025-01-09 03:06:04,232 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 255 transitions. [2025-01-09 03:06:04,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-09 03:06:04,233 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:04,233 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:04,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:04,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:04,433 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:04,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:04,433 INFO L85 PathProgramCache]: Analyzing trace with hash 2121311222, now seen corresponding path program 33 times [2025-01-09 03:06:04,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:04,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10118429] [2025-01-09 03:06:04,434 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:06:04,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:04,438 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 4 equivalence classes. [2025-01-09 03:06:04,442 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:06:04,442 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 03:06:04,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:04,635 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:04,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:04,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10118429] [2025-01-09 03:06:04,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10118429] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:04,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192980331] [2025-01-09 03:06:04,635 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:06:04,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:04,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:04,637 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:04,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-01-09 03:06:04,679 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 4 equivalence classes. [2025-01-09 03:06:04,695 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:06:04,695 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 03:06:04,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:04,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 03:06:04,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:04,909 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:04,909 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:05,189 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:05,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192980331] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:05,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:05,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 35 [2025-01-09 03:06:05,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630774739] [2025-01-09 03:06:05,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:05,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-01-09 03:06:05,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:05,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-01-09 03:06:05,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1084, Unknown=0, NotChecked=0, Total=1190 [2025-01-09 03:06:05,191 INFO L87 Difference]: Start difference. First operand 211 states and 255 transitions. Second operand has 35 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 35 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) [2025-01-09 03:06:05,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:05,629 INFO L93 Difference]: Finished difference Result 228 states and 276 transitions. [2025-01-09 03:06:05,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 03:06:05,629 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 35 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 29 [2025-01-09 03:06:05,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:05,630 INFO L225 Difference]: With dead ends: 228 [2025-01-09 03:06:05,630 INFO L226 Difference]: Without dead ends: 215 [2025-01-09 03:06:05,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=176, Invalid=1716, Unknown=0, NotChecked=0, Total=1892 [2025-01-09 03:06:05,631 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:05,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 277 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:06:05,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2025-01-09 03:06:05,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2025-01-09 03:06:05,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.2102803738317758) internal successors, (259), 214 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:05,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 259 transitions. [2025-01-09 03:06:05,677 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 259 transitions. Word has length 29 [2025-01-09 03:06:05,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:05,677 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 259 transitions. [2025-01-09 03:06:05,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 35 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) [2025-01-09 03:06:05,677 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 259 transitions. [2025-01-09 03:06:05,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-09 03:06:05,678 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:05,678 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:05,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-01-09 03:06:05,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:05,881 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:05,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:05,881 INFO L85 PathProgramCache]: Analyzing trace with hash -71536967, now seen corresponding path program 34 times [2025-01-09 03:06:05,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:05,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84491901] [2025-01-09 03:06:05,881 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:06:05,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:05,884 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-01-09 03:06:05,887 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 03:06:05,887 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:06:05,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 03:06:05,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:05,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84491901] [2025-01-09 03:06:05,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84491901] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:05,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588211842] [2025-01-09 03:06:05,967 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:06:05,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:05,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:05,968 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:05,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-01-09 03:06:06,010 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-01-09 03:06:06,025 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 03:06:06,025 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:06:06,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:06,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 03:06:06,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 03:06:06,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 03:06:06,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588211842] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:06,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:06,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-01-09 03:06:06,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7216980] [2025-01-09 03:06:06,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:06,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 03:06:06,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:06,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 03:06:06,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2025-01-09 03:06:06,264 INFO L87 Difference]: Start difference. First operand 215 states and 259 transitions. Second operand has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:06,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:06,432 INFO L93 Difference]: Finished difference Result 267 states and 316 transitions. [2025-01-09 03:06:06,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 03:06:06,433 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-01-09 03:06:06,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:06,434 INFO L225 Difference]: With dead ends: 267 [2025-01-09 03:06:06,434 INFO L226 Difference]: Without dead ends: 245 [2025-01-09 03:06:06,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2025-01-09 03:06:06,435 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:06,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 268 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:06:06,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2025-01-09 03:06:06,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 240. [2025-01-09 03:06:06,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.1841004184100419) internal successors, (283), 239 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:06,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 283 transitions. [2025-01-09 03:06:06,495 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 283 transitions. Word has length 30 [2025-01-09 03:06:06,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:06,495 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 283 transitions. [2025-01-09 03:06:06,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:06,495 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 283 transitions. [2025-01-09 03:06:06,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-09 03:06:06,495 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:06,495 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:06,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-01-09 03:06:06,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:06,696 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:06,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:06,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1966344513, now seen corresponding path program 35 times [2025-01-09 03:06:06,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:06,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628514894] [2025-01-09 03:06:06,697 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:06:06,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:06,700 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 30 statements into 3 equivalence classes. [2025-01-09 03:06:06,702 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 03:06:06,702 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 03:06:06,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 03:06:06,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:06,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628514894] [2025-01-09 03:06:06,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628514894] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:06,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895021166] [2025-01-09 03:06:06,779 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:06:06,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:06,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:06,783 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:06,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-01-09 03:06:06,828 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 30 statements into 3 equivalence classes. [2025-01-09 03:06:06,843 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 03:06:06,843 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 03:06:06,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:06,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 03:06:06,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 03:06:06,972 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 03:06:07,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895021166] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:07,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:07,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-01-09 03:06:07,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441935456] [2025-01-09 03:06:07,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:07,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 03:06:07,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:07,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 03:06:07,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2025-01-09 03:06:07,075 INFO L87 Difference]: Start difference. First operand 240 states and 283 transitions. Second operand has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:07,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:07,284 INFO L93 Difference]: Finished difference Result 276 states and 326 transitions. [2025-01-09 03:06:07,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 03:06:07,284 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-01-09 03:06:07,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:07,286 INFO L225 Difference]: With dead ends: 276 [2025-01-09 03:06:07,286 INFO L226 Difference]: Without dead ends: 236 [2025-01-09 03:06:07,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2025-01-09 03:06:07,287 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:07,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:06:07,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2025-01-09 03:06:07,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2025-01-09 03:06:07,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.1617021276595745) internal successors, (273), 235 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:07,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 273 transitions. [2025-01-09 03:06:07,375 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 273 transitions. Word has length 30 [2025-01-09 03:06:07,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:07,375 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 273 transitions. [2025-01-09 03:06:07,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:07,375 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 273 transitions. [2025-01-09 03:06:07,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-09 03:06:07,376 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:07,376 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:07,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:07,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,38 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:07,576 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:07,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:07,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1264658433, now seen corresponding path program 36 times [2025-01-09 03:06:07,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:07,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608036508] [2025-01-09 03:06:07,577 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:06:07,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:07,581 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 30 statements into 3 equivalence classes. [2025-01-09 03:06:07,586 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 03:06:07,586 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 03:06:07,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:07,765 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:06:07,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:07,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608036508] [2025-01-09 03:06:07,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608036508] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:07,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703703350] [2025-01-09 03:06:07,766 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:06:07,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:07,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:07,768 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:07,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-01-09 03:06:07,813 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 30 statements into 3 equivalence classes. [2025-01-09 03:06:07,829 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 03:06:07,829 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 03:06:07,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:07,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-01-09 03:06:07,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:08,049 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:06:08,049 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:06:08,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703703350] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:08,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:08,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 34 [2025-01-09 03:06:08,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380691795] [2025-01-09 03:06:08,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:08,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-01-09 03:06:08,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:08,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-01-09 03:06:08,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1032, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 03:06:08,111 INFO L87 Difference]: Start difference. First operand 236 states and 273 transitions. Second operand has 34 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:08,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:08,413 INFO L93 Difference]: Finished difference Result 264 states and 304 transitions. [2025-01-09 03:06:08,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 03:06:08,413 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-01-09 03:06:08,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:08,415 INFO L225 Difference]: With dead ends: 264 [2025-01-09 03:06:08,415 INFO L226 Difference]: Without dead ends: 243 [2025-01-09 03:06:08,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=1745, Unknown=0, NotChecked=0, Total=1892 [2025-01-09 03:06:08,416 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:08,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 370 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:06:08,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2025-01-09 03:06:08,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 235. [2025-01-09 03:06:08,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.1666666666666667) internal successors, (273), 234 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:08,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 273 transitions. [2025-01-09 03:06:08,507 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 273 transitions. Word has length 30 [2025-01-09 03:06:08,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:08,507 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 273 transitions. [2025-01-09 03:06:08,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:08,507 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 273 transitions. [2025-01-09 03:06:08,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-09 03:06:08,507 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:08,507 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:08,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-01-09 03:06:08,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-01-09 03:06:08,712 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:08,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:08,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1077032447, now seen corresponding path program 37 times [2025-01-09 03:06:08,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:08,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592195896] [2025-01-09 03:06:08,713 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:06:08,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:08,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-09 03:06:08,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 03:06:08,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:06:08,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:08,960 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:06:08,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:08,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592195896] [2025-01-09 03:06:08,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592195896] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:08,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639389480] [2025-01-09 03:06:08,961 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:06:08,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:08,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:08,963 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:08,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-01-09 03:06:09,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-01-09 03:06:09,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 03:06:09,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:06:09,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:09,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-01-09 03:06:09,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:06:09,259 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:06:09,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639389480] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:09,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:09,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 36 [2025-01-09 03:06:09,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911373916] [2025-01-09 03:06:09,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:09,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-09 03:06:09,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:09,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-09 03:06:09,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 03:06:09,341 INFO L87 Difference]: Start difference. First operand 235 states and 273 transitions. Second operand has 36 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 36 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) [2025-01-09 03:06:09,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:09,675 INFO L93 Difference]: Finished difference Result 248 states and 285 transitions. [2025-01-09 03:06:09,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 03:06:09,676 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 36 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 30 [2025-01-09 03:06:09,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:09,677 INFO L225 Difference]: With dead ends: 248 [2025-01-09 03:06:09,677 INFO L226 Difference]: Without dead ends: 228 [2025-01-09 03:06:09,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=2013, Unknown=0, NotChecked=0, Total=2162 [2025-01-09 03:06:09,677 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 39 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:09,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 464 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:06:09,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2025-01-09 03:06:09,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2025-01-09 03:06:09,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.1674008810572687) internal successors, (265), 227 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:09,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 265 transitions. [2025-01-09 03:06:09,726 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 265 transitions. Word has length 30 [2025-01-09 03:06:09,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:09,726 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 265 transitions. [2025-01-09 03:06:09,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 36 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) [2025-01-09 03:06:09,727 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 265 transitions. [2025-01-09 03:06:09,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-09 03:06:09,727 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:09,727 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:09,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2025-01-09 03:06:09,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2025-01-09 03:06:09,928 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:09,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:09,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1463757055, now seen corresponding path program 38 times [2025-01-09 03:06:09,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:09,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917136166] [2025-01-09 03:06:09,928 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:06:09,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:09,932 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-01-09 03:06:09,937 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 03:06:09,938 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:06:09,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:06:10,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:10,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917136166] [2025-01-09 03:06:10,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917136166] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:10,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866025533] [2025-01-09 03:06:10,196 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:06:10,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:10,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:10,198 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:10,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-01-09 03:06:10,242 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-01-09 03:06:10,257 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 03:06:10,257 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:06:10,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:10,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-01-09 03:06:10,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:06:10,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:10,526 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:06:10,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866025533] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:10,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:10,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 38 [2025-01-09 03:06:10,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87861491] [2025-01-09 03:06:10,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:10,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-01-09 03:06:10,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:10,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-01-09 03:06:10,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1314, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 03:06:10,531 INFO L87 Difference]: Start difference. First operand 228 states and 265 transitions. Second operand has 38 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 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) [2025-01-09 03:06:10,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:10,945 INFO L93 Difference]: Finished difference Result 265 states and 307 transitions. [2025-01-09 03:06:10,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-09 03:06:10,945 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 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 30 [2025-01-09 03:06:10,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:10,949 INFO L225 Difference]: With dead ends: 265 [2025-01-09 03:06:10,949 INFO L226 Difference]: Without dead ends: 258 [2025-01-09 03:06:10,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=151, Invalid=2299, Unknown=0, NotChecked=0, Total=2450 [2025-01-09 03:06:10,950 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 53 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:10,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 654 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:06:10,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2025-01-09 03:06:11,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 235. [2025-01-09 03:06:11,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.1666666666666667) internal successors, (273), 234 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 273 transitions. [2025-01-09 03:06:11,003 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 273 transitions. Word has length 30 [2025-01-09 03:06:11,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:11,004 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 273 transitions. [2025-01-09 03:06:11,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 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) [2025-01-09 03:06:11,004 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 273 transitions. [2025-01-09 03:06:11,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-09 03:06:11,004 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:11,004 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:11,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:11,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2025-01-09 03:06:11,209 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:11,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:11,209 INFO L85 PathProgramCache]: Analyzing trace with hash -609290404, now seen corresponding path program 39 times [2025-01-09 03:06:11,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:11,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672514256] [2025-01-09 03:06:11,209 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:06:11,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:11,212 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 3 equivalence classes. [2025-01-09 03:06:11,217 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 03:06:11,217 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 03:06:11,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:11,271 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-09 03:06:11,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:11,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672514256] [2025-01-09 03:06:11,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672514256] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:11,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382666873] [2025-01-09 03:06:11,272 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:06:11,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:11,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:11,274 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:11,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2025-01-09 03:06:11,317 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 3 equivalence classes. [2025-01-09 03:06:11,333 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 03:06:11,333 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 03:06:11,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:11,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 03:06:11,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:11,373 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-09 03:06:11,373 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-09 03:06:11,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382666873] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:11,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:11,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-01-09 03:06:11,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855934982] [2025-01-09 03:06:11,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:11,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 03:06:11,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:11,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 03:06:11,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2025-01-09 03:06:11,410 INFO L87 Difference]: Start difference. First operand 235 states and 273 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:11,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:11,538 INFO L93 Difference]: Finished difference Result 249 states and 287 transitions. [2025-01-09 03:06:11,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 03:06:11,538 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-01-09 03:06:11,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:11,539 INFO L225 Difference]: With dead ends: 249 [2025-01-09 03:06:11,539 INFO L226 Difference]: Without dead ends: 244 [2025-01-09 03:06:11,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 48 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2025-01-09 03:06:11,540 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 32 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:11,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 115 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:06:11,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2025-01-09 03:06:11,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 218. [2025-01-09 03:06:11,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.1612903225806452) internal successors, (252), 217 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:11,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 252 transitions. [2025-01-09 03:06:11,587 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 252 transitions. Word has length 31 [2025-01-09 03:06:11,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:11,587 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 252 transitions. [2025-01-09 03:06:11,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:11,587 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 252 transitions. [2025-01-09 03:06:11,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-09 03:06:11,588 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:11,588 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:11,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2025-01-09 03:06:11,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2025-01-09 03:06:11,788 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:11,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:11,789 INFO L85 PathProgramCache]: Analyzing trace with hash 688431900, now seen corresponding path program 40 times [2025-01-09 03:06:11,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:11,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83286279] [2025-01-09 03:06:11,789 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:06:11,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:11,792 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-01-09 03:06:11,795 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 03:06:11,795 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:06:11,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-09 03:06:11,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:11,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83286279] [2025-01-09 03:06:11,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83286279] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:11,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170199302] [2025-01-09 03:06:11,838 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:06:11,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:11,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:11,840 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:11,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2025-01-09 03:06:11,889 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-01-09 03:06:11,908 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 03:06:11,908 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:06:11,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:11,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 03:06:11,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-09 03:06:11,944 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-09 03:06:11,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170199302] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:11,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:11,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2025-01-09 03:06:11,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339363847] [2025-01-09 03:06:11,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:11,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 03:06:11,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:11,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 03:06:11,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2025-01-09 03:06:11,981 INFO L87 Difference]: Start difference. First operand 218 states and 252 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:12,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:12,081 INFO L93 Difference]: Finished difference Result 283 states and 330 transitions. [2025-01-09 03:06:12,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 03:06:12,081 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-01-09 03:06:12,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:12,082 INFO L225 Difference]: With dead ends: 283 [2025-01-09 03:06:12,082 INFO L226 Difference]: Without dead ends: 224 [2025-01-09 03:06:12,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 49 SyntacticMatches, 9 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=265, Unknown=0, NotChecked=0, Total=420 [2025-01-09 03:06:12,082 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 29 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:12,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 116 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:06:12,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2025-01-09 03:06:12,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2025-01-09 03:06:12,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.15695067264574) internal successors, (258), 223 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:12,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 258 transitions. [2025-01-09 03:06:12,136 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 258 transitions. Word has length 31 [2025-01-09 03:06:12,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:12,136 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 258 transitions. [2025-01-09 03:06:12,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:12,136 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 258 transitions. [2025-01-09 03:06:12,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-09 03:06:12,136 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:12,137 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:12,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:12,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-01-09 03:06:12,337 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:12,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:12,338 INFO L85 PathProgramCache]: Analyzing trace with hash -931723946, now seen corresponding path program 41 times [2025-01-09 03:06:12,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:12,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31631869] [2025-01-09 03:06:12,338 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:06:12,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:12,341 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 5 equivalence classes. [2025-01-09 03:06:12,344 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 03:06:12,344 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-01-09 03:06:12,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:12,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:12,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31631869] [2025-01-09 03:06:12,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31631869] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:12,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246648956] [2025-01-09 03:06:12,490 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:06:12,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:12,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:12,492 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:12,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2025-01-09 03:06:12,542 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 5 equivalence classes. [2025-01-09 03:06:12,564 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 03:06:12,564 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-01-09 03:06:12,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:12,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 03:06:12,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:12,864 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:12,864 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:13,087 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:13,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246648956] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:13,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:13,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 38 [2025-01-09 03:06:13,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713150930] [2025-01-09 03:06:13,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:13,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-01-09 03:06:13,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:13,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-01-09 03:06:13,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1298, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 03:06:13,088 INFO L87 Difference]: Start difference. First operand 224 states and 258 transitions. Second operand has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 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) [2025-01-09 03:06:13,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:13,447 INFO L93 Difference]: Finished difference Result 322 states and 368 transitions. [2025-01-09 03:06:13,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 03:06:13,447 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 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 31 [2025-01-09 03:06:13,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:13,448 INFO L225 Difference]: With dead ends: 322 [2025-01-09 03:06:13,448 INFO L226 Difference]: Without dead ends: 292 [2025-01-09 03:06:13,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 34 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=297, Invalid=2153, Unknown=0, NotChecked=0, Total=2450 [2025-01-09 03:06:13,449 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:13,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 264 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:06:13,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2025-01-09 03:06:13,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 251. [2025-01-09 03:06:13,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.156) internal successors, (289), 250 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:13,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 289 transitions. [2025-01-09 03:06:13,506 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 289 transitions. Word has length 31 [2025-01-09 03:06:13,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:13,507 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 289 transitions. [2025-01-09 03:06:13,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 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) [2025-01-09 03:06:13,507 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 289 transitions. [2025-01-09 03:06:13,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-09 03:06:13,507 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:13,507 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:13,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2025-01-09 03:06:13,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:13,708 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:13,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:13,708 INFO L85 PathProgramCache]: Analyzing trace with hash -694362406, now seen corresponding path program 42 times [2025-01-09 03:06:13,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:13,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594283576] [2025-01-09 03:06:13,708 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:06:13,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:13,711 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 5 equivalence classes. [2025-01-09 03:06:13,715 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 03:06:13,716 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-09 03:06:13,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:13,869 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:13,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:13,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594283576] [2025-01-09 03:06:13,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594283576] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:13,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101780352] [2025-01-09 03:06:13,870 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:06:13,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:13,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:13,872 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:13,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2025-01-09 03:06:13,920 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 5 equivalence classes. [2025-01-09 03:06:13,938 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 03:06:13,938 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-09 03:06:13,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:13,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 03:06:13,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:14,244 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:14,245 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:14,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101780352] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:14,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:14,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2025-01-09 03:06:14,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691770302] [2025-01-09 03:06:14,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:14,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-01-09 03:06:14,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:14,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-01-09 03:06:14,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2025-01-09 03:06:14,539 INFO L87 Difference]: Start difference. First operand 251 states and 289 transitions. Second operand has 39 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 39 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) [2025-01-09 03:06:15,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:15,089 INFO L93 Difference]: Finished difference Result 269 states and 311 transitions. [2025-01-09 03:06:15,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 03:06:15,090 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 39 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 31 [2025-01-09 03:06:15,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:15,091 INFO L225 Difference]: With dead ends: 269 [2025-01-09 03:06:15,091 INFO L226 Difference]: Without dead ends: 255 [2025-01-09 03:06:15,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 33 SyntacticMatches, 7 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=207, Invalid=2343, Unknown=0, NotChecked=0, Total=2550 [2025-01-09 03:06:15,092 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:15,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 376 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:06:15,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2025-01-09 03:06:15,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2025-01-09 03:06:15,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.1535433070866141) internal successors, (293), 254 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:15,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 293 transitions. [2025-01-09 03:06:15,153 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 293 transitions. Word has length 31 [2025-01-09 03:06:15,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:15,153 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 293 transitions. [2025-01-09 03:06:15,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 39 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) [2025-01-09 03:06:15,153 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 293 transitions. [2025-01-09 03:06:15,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-01-09 03:06:15,154 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:15,154 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:15,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:15,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:15,358 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:15,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:15,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1767360739, now seen corresponding path program 43 times [2025-01-09 03:06:15,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:15,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868057242] [2025-01-09 03:06:15,359 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:06:15,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:15,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-09 03:06:15,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 03:06:15,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:06:15,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 03:06:15,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:15,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868057242] [2025-01-09 03:06:15,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868057242] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:15,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749396100] [2025-01-09 03:06:15,570 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:06:15,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:15,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:15,572 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:15,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2025-01-09 03:06:15,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-09 03:06:15,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 03:06:15,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:06:15,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:15,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-01-09 03:06:15,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:15,865 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 03:06:15,866 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 03:06:15,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749396100] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:15,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:15,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 35 [2025-01-09 03:06:15,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120108746] [2025-01-09 03:06:15,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:15,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-01-09 03:06:15,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:15,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-01-09 03:06:15,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1094, Unknown=0, NotChecked=0, Total=1190 [2025-01-09 03:06:15,950 INFO L87 Difference]: Start difference. First operand 255 states and 293 transitions. Second operand has 35 states, 35 states have (on average 1.4) internal successors, (49), 35 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) [2025-01-09 03:06:16,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:16,238 INFO L93 Difference]: Finished difference Result 276 states and 317 transitions. [2025-01-09 03:06:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 03:06:16,238 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.4) internal successors, (49), 35 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 32 [2025-01-09 03:06:16,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:16,239 INFO L225 Difference]: With dead ends: 276 [2025-01-09 03:06:16,239 INFO L226 Difference]: Without dead ends: 271 [2025-01-09 03:06:16,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=1824, Unknown=0, NotChecked=0, Total=1980 [2025-01-09 03:06:16,240 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 28 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:16,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 265 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:06:16,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2025-01-09 03:06:16,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 265. [2025-01-09 03:06:16,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.1553030303030303) internal successors, (305), 264 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:16,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 305 transitions. [2025-01-09 03:06:16,313 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 305 transitions. Word has length 32 [2025-01-09 03:06:16,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:16,313 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 305 transitions. [2025-01-09 03:06:16,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.4) internal successors, (49), 35 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) [2025-01-09 03:06:16,313 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 305 transitions. [2025-01-09 03:06:16,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-01-09 03:06:16,313 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:16,313 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:16,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2025-01-09 03:06:16,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:16,514 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:16,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:16,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1094059875, now seen corresponding path program 44 times [2025-01-09 03:06:16,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:16,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164028426] [2025-01-09 03:06:16,514 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:06:16,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:16,517 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-01-09 03:06:16,523 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 03:06:16,523 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:06:16,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:16,755 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:06:16,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:16,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164028426] [2025-01-09 03:06:16,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164028426] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:16,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342137267] [2025-01-09 03:06:16,755 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:06:16,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:16,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:16,757 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:16,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2025-01-09 03:06:16,804 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-01-09 03:06:16,820 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 03:06:16,820 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:06:16,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:16,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-01-09 03:06:16,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:06:17,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:06:17,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342137267] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:17,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:17,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 37 [2025-01-09 03:06:17,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807508738] [2025-01-09 03:06:17,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:17,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-01-09 03:06:17,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:17,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-01-09 03:06:17,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1235, Unknown=0, NotChecked=0, Total=1332 [2025-01-09 03:06:17,157 INFO L87 Difference]: Start difference. First operand 265 states and 305 transitions. Second operand has 37 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 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) [2025-01-09 03:06:17,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:17,538 INFO L93 Difference]: Finished difference Result 278 states and 317 transitions. [2025-01-09 03:06:17,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 03:06:17,539 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 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 32 [2025-01-09 03:06:17,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:17,540 INFO L225 Difference]: With dead ends: 278 [2025-01-09 03:06:17,540 INFO L226 Difference]: Without dead ends: 256 [2025-01-09 03:06:17,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=2098, Unknown=0, NotChecked=0, Total=2256 [2025-01-09 03:06:17,540 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 35 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:17,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 416 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:06:17,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2025-01-09 03:06:17,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2025-01-09 03:06:17,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.1568627450980393) internal successors, (295), 255 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:17,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 295 transitions. [2025-01-09 03:06:17,611 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 295 transitions. Word has length 32 [2025-01-09 03:06:17,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:17,611 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 295 transitions. [2025-01-09 03:06:17,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 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) [2025-01-09 03:06:17,611 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 295 transitions. [2025-01-09 03:06:17,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-01-09 03:06:17,612 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:17,612 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:17,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:17,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2025-01-09 03:06:17,812 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:17,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:17,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1357105379, now seen corresponding path program 45 times [2025-01-09 03:06:17,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:17,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954317986] [2025-01-09 03:06:17,813 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:06:17,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:17,816 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 4 equivalence classes. [2025-01-09 03:06:17,830 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 03:06:17,833 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 03:06:17,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:06:18,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:18,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954317986] [2025-01-09 03:06:18,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954317986] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:18,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858980362] [2025-01-09 03:06:18,126 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:06:18,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:18,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:18,128 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:18,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2025-01-09 03:06:18,176 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 4 equivalence classes. [2025-01-09 03:06:18,193 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 03:06:18,193 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 03:06:18,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:18,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-01-09 03:06:18,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:06:18,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:06:18,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858980362] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:18,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:18,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 39 [2025-01-09 03:06:18,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273613344] [2025-01-09 03:06:18,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:18,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-01-09 03:06:18,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:18,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-01-09 03:06:18,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1384, Unknown=0, NotChecked=0, Total=1482 [2025-01-09 03:06:18,582 INFO L87 Difference]: Start difference. First operand 256 states and 295 transitions. Second operand has 39 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:19,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:19,016 INFO L93 Difference]: Finished difference Result 270 states and 308 transitions. [2025-01-09 03:06:19,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-09 03:06:19,016 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-01-09 03:06:19,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:19,017 INFO L225 Difference]: With dead ends: 270 [2025-01-09 03:06:19,017 INFO L226 Difference]: Without dead ends: 249 [2025-01-09 03:06:19,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=2390, Unknown=0, NotChecked=0, Total=2550 [2025-01-09 03:06:19,018 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 45 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:19,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 564 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:06:19,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2025-01-09 03:06:19,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2025-01-09 03:06:19,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.157258064516129) internal successors, (287), 248 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:19,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 287 transitions. [2025-01-09 03:06:19,078 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 287 transitions. Word has length 32 [2025-01-09 03:06:19,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:19,078 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 287 transitions. [2025-01-09 03:06:19,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:19,079 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 287 transitions. [2025-01-09 03:06:19,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-01-09 03:06:19,079 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:19,079 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:19,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:19,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:19,283 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:19,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:19,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1444673693, now seen corresponding path program 46 times [2025-01-09 03:06:19,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:19,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370294448] [2025-01-09 03:06:19,283 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:06:19,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:19,287 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-01-09 03:06:19,290 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 03:06:19,290 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:06:19,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:19,627 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:06:19,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:19,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370294448] [2025-01-09 03:06:19,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370294448] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:19,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024945763] [2025-01-09 03:06:19,628 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:06:19,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:19,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:19,634 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:19,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2025-01-09 03:06:19,681 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-01-09 03:06:19,697 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 03:06:19,697 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:06:19,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:19,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-01-09 03:06:19,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:06:20,047 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:20,083 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:06:20,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024945763] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:20,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:20,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 40 [2025-01-09 03:06:20,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887786338] [2025-01-09 03:06:20,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:20,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-01-09 03:06:20,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:20,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-01-09 03:06:20,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1466, Unknown=0, NotChecked=0, Total=1560 [2025-01-09 03:06:20,085 INFO L87 Difference]: Start difference. First operand 249 states and 287 transitions. Second operand has 40 states, 40 states have (on average 1.275) internal successors, (51), 40 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) [2025-01-09 03:06:20,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:20,532 INFO L93 Difference]: Finished difference Result 288 states and 331 transitions. [2025-01-09 03:06:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-09 03:06:20,533 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.275) internal successors, (51), 40 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 32 [2025-01-09 03:06:20,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:20,534 INFO L225 Difference]: With dead ends: 288 [2025-01-09 03:06:20,534 INFO L226 Difference]: Without dead ends: 281 [2025-01-09 03:06:20,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=157, Invalid=2599, Unknown=0, NotChecked=0, Total=2756 [2025-01-09 03:06:20,535 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 59 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:20,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 703 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:06:20,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2025-01-09 03:06:20,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 256. [2025-01-09 03:06:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.1568627450980393) internal successors, (295), 255 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:20,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 295 transitions. [2025-01-09 03:06:20,617 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 295 transitions. Word has length 32 [2025-01-09 03:06:20,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:20,617 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 295 transitions. [2025-01-09 03:06:20,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.275) internal successors, (51), 40 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) [2025-01-09 03:06:20,617 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 295 transitions. [2025-01-09 03:06:20,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-09 03:06:20,618 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:20,618 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:20,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2025-01-09 03:06:20,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2025-01-09 03:06:20,822 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:20,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:20,822 INFO L85 PathProgramCache]: Analyzing trace with hash -587521220, now seen corresponding path program 47 times [2025-01-09 03:06:20,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:20,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201597635] [2025-01-09 03:06:20,823 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:06:20,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:20,826 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 4 equivalence classes. [2025-01-09 03:06:20,828 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 03:06:20,828 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 03:06:20,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:20,879 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-09 03:06:20,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:20,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201597635] [2025-01-09 03:06:20,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201597635] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:20,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165099605] [2025-01-09 03:06:20,879 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:06:20,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:20,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:20,881 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:20,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2025-01-09 03:06:20,929 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 4 equivalence classes. [2025-01-09 03:06:20,945 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 03:06:20,945 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 03:06:20,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:20,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 03:06:20,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-09 03:06:20,996 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:21,032 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-09 03:06:21,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165099605] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:21,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:21,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2025-01-09 03:06:21,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438046205] [2025-01-09 03:06:21,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:21,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 03:06:21,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:21,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 03:06:21,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2025-01-09 03:06:21,033 INFO L87 Difference]: Start difference. First operand 256 states and 295 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 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) [2025-01-09 03:06:21,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:21,198 INFO L93 Difference]: Finished difference Result 374 states and 443 transitions. [2025-01-09 03:06:21,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 03:06:21,198 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 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 33 [2025-01-09 03:06:21,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:21,199 INFO L225 Difference]: With dead ends: 374 [2025-01-09 03:06:21,199 INFO L226 Difference]: Without dead ends: 300 [2025-01-09 03:06:21,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 52 SyntacticMatches, 9 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2025-01-09 03:06:21,200 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:21,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 144 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:06:21,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2025-01-09 03:06:21,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2025-01-09 03:06:21,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.160535117056856) internal successors, (347), 299 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:21,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 347 transitions. [2025-01-09 03:06:21,287 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 347 transitions. Word has length 33 [2025-01-09 03:06:21,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:21,287 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 347 transitions. [2025-01-09 03:06:21,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 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) [2025-01-09 03:06:21,287 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 347 transitions. [2025-01-09 03:06:21,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-09 03:06:21,287 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:21,287 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:21,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:21,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2025-01-09 03:06:21,488 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:21,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:21,488 INFO L85 PathProgramCache]: Analyzing trace with hash 987164540, now seen corresponding path program 48 times [2025-01-09 03:06:21,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:21,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855973633] [2025-01-09 03:06:21,488 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:06:21,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:21,491 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 33 statements into 4 equivalence classes. [2025-01-09 03:06:21,495 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 03:06:21,495 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-09 03:06:21,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:21,551 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-09 03:06:21,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:21,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855973633] [2025-01-09 03:06:21,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855973633] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:21,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072648300] [2025-01-09 03:06:21,551 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:06:21,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:21,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:21,553 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:21,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2025-01-09 03:06:21,609 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 33 statements into 4 equivalence classes. [2025-01-09 03:06:21,632 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 03:06:21,635 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-09 03:06:21,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:21,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 03:06:21,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:21,715 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-09 03:06:21,715 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:21,759 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-09 03:06:21,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072648300] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:21,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:21,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2025-01-09 03:06:21,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272301010] [2025-01-09 03:06:21,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:21,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 03:06:21,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:21,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 03:06:21,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2025-01-09 03:06:21,760 INFO L87 Difference]: Start difference. First operand 300 states and 347 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:21,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:21,971 INFO L93 Difference]: Finished difference Result 346 states and 403 transitions. [2025-01-09 03:06:21,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 03:06:21,972 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2025-01-09 03:06:21,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:21,973 INFO L225 Difference]: With dead ends: 346 [2025-01-09 03:06:21,976 INFO L226 Difference]: Without dead ends: 333 [2025-01-09 03:06:21,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 51 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2025-01-09 03:06:21,977 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:21,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 120 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:06:21,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2025-01-09 03:06:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 324. [2025-01-09 03:06:22,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 323 states have (on average 1.173374613003096) internal successors, (379), 323 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:22,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 379 transitions. [2025-01-09 03:06:22,069 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 379 transitions. Word has length 33 [2025-01-09 03:06:22,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:22,069 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 379 transitions. [2025-01-09 03:06:22,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:22,069 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 379 transitions. [2025-01-09 03:06:22,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-09 03:06:22,069 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:22,069 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:22,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2025-01-09 03:06:22,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,51 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:22,274 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:22,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:22,274 INFO L85 PathProgramCache]: Analyzing trace with hash -964683974, now seen corresponding path program 49 times [2025-01-09 03:06:22,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:22,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605162295] [2025-01-09 03:06:22,275 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:06:22,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:22,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 03:06:22,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 03:06:22,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:06:22,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:22,518 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:22,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:22,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605162295] [2025-01-09 03:06:22,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605162295] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:22,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871039661] [2025-01-09 03:06:22,519 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:06:22,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:22,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:22,520 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:22,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2025-01-09 03:06:22,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 03:06:22,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 03:06:22,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:06:22,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:22,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-09 03:06:22,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:22,974 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:22,975 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:23,335 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:23,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871039661] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:23,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:23,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 44 [2025-01-09 03:06:23,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082151543] [2025-01-09 03:06:23,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:23,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-01-09 03:06:23,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:23,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-01-09 03:06:23,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1765, Unknown=0, NotChecked=0, Total=1892 [2025-01-09 03:06:23,336 INFO L87 Difference]: Start difference. First operand 324 states and 379 transitions. Second operand has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:23,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:23,906 INFO L93 Difference]: Finished difference Result 471 states and 542 transitions. [2025-01-09 03:06:23,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-09 03:06:23,906 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2025-01-09 03:06:23,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:23,908 INFO L225 Difference]: With dead ends: 471 [2025-01-09 03:06:23,911 INFO L226 Difference]: Without dead ends: 438 [2025-01-09 03:06:23,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 34 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=372, Invalid=2934, Unknown=0, NotChecked=0, Total=3306 [2025-01-09 03:06:23,912 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 24 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:23,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 352 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:06:23,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2025-01-09 03:06:24,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 359. [2025-01-09 03:06:24,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.1731843575418994) internal successors, (420), 358 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:24,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 420 transitions. [2025-01-09 03:06:24,027 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 420 transitions. Word has length 33 [2025-01-09 03:06:24,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:24,027 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 420 transitions. [2025-01-09 03:06:24,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:24,027 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 420 transitions. [2025-01-09 03:06:24,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-09 03:06:24,027 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:24,027 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:24,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2025-01-09 03:06:24,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2025-01-09 03:06:24,232 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:24,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:24,232 INFO L85 PathProgramCache]: Analyzing trace with hash 2098556470, now seen corresponding path program 50 times [2025-01-09 03:06:24,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:24,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508775657] [2025-01-09 03:06:24,232 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:06:24,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:24,235 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-01-09 03:06:24,243 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 03:06:24,243 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:06:24,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:24,532 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:24,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:24,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508775657] [2025-01-09 03:06:24,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508775657] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:24,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313344437] [2025-01-09 03:06:24,533 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:06:24,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:24,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:24,535 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:24,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2025-01-09 03:06:24,587 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-01-09 03:06:24,603 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 03:06:24,603 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:06:24,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:24,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-09 03:06:24,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:24,927 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:25,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313344437] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:25,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:25,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2025-01-09 03:06:25,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299292113] [2025-01-09 03:06:25,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:25,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-01-09 03:06:25,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:25,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-01-09 03:06:25,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1842, Unknown=0, NotChecked=0, Total=1980 [2025-01-09 03:06:25,228 INFO L87 Difference]: Start difference. First operand 359 states and 420 transitions. Second operand has 45 states, 45 states have (on average 1.5777777777777777) internal successors, (71), 45 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:26,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:26,007 INFO L93 Difference]: Finished difference Result 379 states and 445 transitions. [2025-01-09 03:06:26,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 03:06:26,007 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.5777777777777777) internal successors, (71), 45 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2025-01-09 03:06:26,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:26,009 INFO L225 Difference]: With dead ends: 379 [2025-01-09 03:06:26,009 INFO L226 Difference]: Without dead ends: 364 [2025-01-09 03:06:26,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 33 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=252, Invalid=3054, Unknown=0, NotChecked=0, Total=3306 [2025-01-09 03:06:26,009 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:26,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 366 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:06:26,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2025-01-09 03:06:26,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2025-01-09 03:06:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.1707988980716253) internal successors, (425), 363 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:26,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 425 transitions. [2025-01-09 03:06:26,107 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 425 transitions. Word has length 33 [2025-01-09 03:06:26,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:26,107 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 425 transitions. [2025-01-09 03:06:26,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.5777777777777777) internal successors, (71), 45 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:26,108 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 425 transitions. [2025-01-09 03:06:26,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-09 03:06:26,109 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:26,109 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:26,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2025-01-09 03:06:26,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2025-01-09 03:06:26,309 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:26,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:26,310 INFO L85 PathProgramCache]: Analyzing trace with hash -292063359, now seen corresponding path program 51 times [2025-01-09 03:06:26,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:26,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136721804] [2025-01-09 03:06:26,310 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:06:26,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:26,313 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 4 equivalence classes. [2025-01-09 03:06:26,318 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 03:06:26,318 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 03:06:26,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:26,454 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-01-09 03:06:26,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:26,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136721804] [2025-01-09 03:06:26,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136721804] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:26,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963158272] [2025-01-09 03:06:26,455 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:06:26,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:26,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:26,458 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:26,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2025-01-09 03:06:26,509 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 4 equivalence classes. [2025-01-09 03:06:26,527 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 03:06:26,527 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 03:06:26,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:26,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 03:06:26,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:26,698 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-09 03:06:26,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-09 03:06:26,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963158272] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:26,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:26,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 31 [2025-01-09 03:06:26,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717929570] [2025-01-09 03:06:26,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:26,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-01-09 03:06:26,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:26,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-01-09 03:06:26,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2025-01-09 03:06:26,866 INFO L87 Difference]: Start difference. First operand 364 states and 425 transitions. Second operand has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 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) [2025-01-09 03:06:27,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:27,260 INFO L93 Difference]: Finished difference Result 439 states and 507 transitions. [2025-01-09 03:06:27,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 03:06:27,261 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 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 34 [2025-01-09 03:06:27,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:27,262 INFO L225 Difference]: With dead ends: 439 [2025-01-09 03:06:27,262 INFO L226 Difference]: Without dead ends: 412 [2025-01-09 03:06:27,263 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 03:06:27,263 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:27,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 317 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:06:27,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2025-01-09 03:06:27,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 406. [2025-01-09 03:06:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.1506172839506172) internal successors, (466), 405 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:27,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 466 transitions. [2025-01-09 03:06:27,380 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 466 transitions. Word has length 34 [2025-01-09 03:06:27,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:27,380 INFO L471 AbstractCegarLoop]: Abstraction has 406 states and 466 transitions. [2025-01-09 03:06:27,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 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) [2025-01-09 03:06:27,380 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 466 transitions. [2025-01-09 03:06:27,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-09 03:06:27,381 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:27,381 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:27,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:27,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2025-01-09 03:06:27,582 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:27,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:27,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1002536953, now seen corresponding path program 52 times [2025-01-09 03:06:27,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:27,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65577051] [2025-01-09 03:06:27,583 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:06:27,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:27,586 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-01-09 03:06:27,589 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 03:06:27,589 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:06:27,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-09 03:06:27,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:27,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65577051] [2025-01-09 03:06:27,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65577051] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:27,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702355791] [2025-01-09 03:06:27,693 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:06:27,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:27,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:27,695 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:27,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2025-01-09 03:06:27,747 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-01-09 03:06:27,764 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 03:06:27,764 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:06:27,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:27,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 03:06:27,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:27,940 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-09 03:06:27,940 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-09 03:06:28,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702355791] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:28,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:28,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2025-01-09 03:06:28,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774138103] [2025-01-09 03:06:28,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:28,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-09 03:06:28,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:28,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-09 03:06:28,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2025-01-09 03:06:28,086 INFO L87 Difference]: Start difference. First operand 406 states and 466 transitions. Second operand has 28 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:28,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:28,385 INFO L93 Difference]: Finished difference Result 450 states and 519 transitions. [2025-01-09 03:06:28,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 03:06:28,385 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2025-01-09 03:06:28,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:28,386 INFO L225 Difference]: With dead ends: 450 [2025-01-09 03:06:28,387 INFO L226 Difference]: Without dead ends: 401 [2025-01-09 03:06:28,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=1084, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 03:06:28,387 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:28,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 216 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:06:28,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2025-01-09 03:06:28,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2025-01-09 03:06:28,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 1.1325) internal successors, (453), 400 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:28,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 453 transitions. [2025-01-09 03:06:28,499 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 453 transitions. Word has length 34 [2025-01-09 03:06:28,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:28,499 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 453 transitions. [2025-01-09 03:06:28,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:28,499 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 453 transitions. [2025-01-09 03:06:28,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-09 03:06:28,500 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:28,500 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:28,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:28,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:28,701 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:28,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:28,701 INFO L85 PathProgramCache]: Analyzing trace with hash -880048191, now seen corresponding path program 53 times [2025-01-09 03:06:28,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:28,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609217854] [2025-01-09 03:06:28,701 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:06:28,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:28,705 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 34 statements into 3 equivalence classes. [2025-01-09 03:06:28,708 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 03:06:28,708 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 03:06:28,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:28,935 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 03:06:28,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:28,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609217854] [2025-01-09 03:06:28,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609217854] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:28,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971677844] [2025-01-09 03:06:28,935 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:06:28,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:28,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:28,937 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:28,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2025-01-09 03:06:28,992 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 34 statements into 3 equivalence classes. [2025-01-09 03:06:29,008 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 03:06:29,008 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 03:06:29,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:29,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-01-09 03:06:29,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:29,318 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 03:06:29,318 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:29,353 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 03:06:29,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971677844] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:29,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:29,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 37 [2025-01-09 03:06:29,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048115089] [2025-01-09 03:06:29,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:29,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-01-09 03:06:29,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:29,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-01-09 03:06:29,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1234, Unknown=0, NotChecked=0, Total=1332 [2025-01-09 03:06:29,354 INFO L87 Difference]: Start difference. First operand 401 states and 453 transitions. Second operand has 37 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 37 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:29,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:29,742 INFO L93 Difference]: Finished difference Result 432 states and 487 transitions. [2025-01-09 03:06:29,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 03:06:29,742 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 37 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2025-01-09 03:06:29,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:29,743 INFO L225 Difference]: With dead ends: 432 [2025-01-09 03:06:29,743 INFO L226 Difference]: Without dead ends: 408 [2025-01-09 03:06:29,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=2094, Unknown=0, NotChecked=0, Total=2256 [2025-01-09 03:06:29,744 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 35 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:29,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 404 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:06:29,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2025-01-09 03:06:29,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 399. [2025-01-09 03:06:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.135678391959799) internal successors, (452), 398 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:29,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 452 transitions. [2025-01-09 03:06:29,859 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 452 transitions. Word has length 34 [2025-01-09 03:06:29,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:29,860 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 452 transitions. [2025-01-09 03:06:29,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 37 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:29,860 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 452 transitions. [2025-01-09 03:06:29,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-09 03:06:29,860 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:29,860 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:29,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:30,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:30,065 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:30,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:30,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1244961343, now seen corresponding path program 54 times [2025-01-09 03:06:30,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:30,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208413647] [2025-01-09 03:06:30,066 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:06:30,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:30,069 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 34 statements into 3 equivalence classes. [2025-01-09 03:06:30,073 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 03:06:30,073 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 03:06:30,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:30,309 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:06:30,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:30,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208413647] [2025-01-09 03:06:30,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208413647] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:30,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937570924] [2025-01-09 03:06:30,309 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:06:30,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:30,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:30,312 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:30,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2025-01-09 03:06:30,364 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 34 statements into 3 equivalence classes. [2025-01-09 03:06:30,380 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 03:06:30,380 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 03:06:30,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:30,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-01-09 03:06:30,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:06:30,574 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:06:30,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937570924] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:30,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:30,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 41 [2025-01-09 03:06:30,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680228353] [2025-01-09 03:06:30,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:30,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-01-09 03:06:30,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:30,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-01-09 03:06:30,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1533, Unknown=0, NotChecked=0, Total=1640 [2025-01-09 03:06:30,752 INFO L87 Difference]: Start difference. First operand 399 states and 452 transitions. Second operand has 41 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:31,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:31,245 INFO L93 Difference]: Finished difference Result 413 states and 465 transitions. [2025-01-09 03:06:31,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-09 03:06:31,245 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2025-01-09 03:06:31,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:31,247 INFO L225 Difference]: With dead ends: 413 [2025-01-09 03:06:31,247 INFO L226 Difference]: Without dead ends: 390 [2025-01-09 03:06:31,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=2584, Unknown=0, NotChecked=0, Total=2756 [2025-01-09 03:06:31,247 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 39 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:31,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 578 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:06:31,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2025-01-09 03:06:31,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2025-01-09 03:06:31,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.1362467866323906) internal successors, (442), 389 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:31,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 442 transitions. [2025-01-09 03:06:31,358 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 442 transitions. Word has length 34 [2025-01-09 03:06:31,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:31,359 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 442 transitions. [2025-01-09 03:06:31,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:31,359 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 442 transitions. [2025-01-09 03:06:31,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-09 03:06:31,359 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:31,359 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:31,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2025-01-09 03:06:31,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2025-01-09 03:06:31,560 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:31,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:31,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1873438527, now seen corresponding path program 55 times [2025-01-09 03:06:31,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:31,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171715896] [2025-01-09 03:06:31,561 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:06:31,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:31,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 03:06:31,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 03:06:31,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:06:31,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:31,942 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:06:31,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:31,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171715896] [2025-01-09 03:06:31,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171715896] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:31,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615518638] [2025-01-09 03:06:31,943 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:06:31,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:31,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:31,945 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:31,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2025-01-09 03:06:31,997 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 03:06:32,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 03:06:32,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:06:32,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:32,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-01-09 03:06:32,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:06:32,276 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:06:32,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615518638] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:32,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:32,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 42 [2025-01-09 03:06:32,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570191789] [2025-01-09 03:06:32,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:32,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-01-09 03:06:32,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:32,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-01-09 03:06:32,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1617, Unknown=0, NotChecked=0, Total=1722 [2025-01-09 03:06:32,372 INFO L87 Difference]: Start difference. First operand 390 states and 442 transitions. Second operand has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 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) [2025-01-09 03:06:32,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:32,933 INFO L93 Difference]: Finished difference Result 405 states and 456 transitions. [2025-01-09 03:06:32,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-09 03:06:32,934 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 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 34 [2025-01-09 03:06:32,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:32,935 INFO L225 Difference]: With dead ends: 405 [2025-01-09 03:06:32,935 INFO L226 Difference]: Without dead ends: 383 [2025-01-09 03:06:32,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=2799, Unknown=0, NotChecked=0, Total=2970 [2025-01-09 03:06:32,936 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 53 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:32,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 666 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:06:32,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2025-01-09 03:06:33,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2025-01-09 03:06:33,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.1361256544502618) internal successors, (434), 382 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:33,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 434 transitions. [2025-01-09 03:06:33,073 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 434 transitions. Word has length 34 [2025-01-09 03:06:33,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:33,073 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 434 transitions. [2025-01-09 03:06:33,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 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) [2025-01-09 03:06:33,073 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 434 transitions. [2025-01-09 03:06:33,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-09 03:06:33,074 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:33,074 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:33,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2025-01-09 03:06:33,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:33,278 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:33,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:33,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2125812929, now seen corresponding path program 56 times [2025-01-09 03:06:33,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:33,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738902875] [2025-01-09 03:06:33,279 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:06:33,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:33,283 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-09 03:06:33,288 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 03:06:33,288 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:06:33,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:06:33,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:33,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738902875] [2025-01-09 03:06:33,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738902875] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:33,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154908264] [2025-01-09 03:06:33,759 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:06:33,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:33,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:33,762 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:33,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2025-01-09 03:06:33,818 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-09 03:06:33,834 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 03:06:33,834 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:06:33,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:33,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-01-09 03:06:33,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:06:34,108 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:06:34,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154908264] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:34,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:34,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 44 [2025-01-09 03:06:34,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398941588] [2025-01-09 03:06:34,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:34,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-01-09 03:06:34,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:34,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-01-09 03:06:34,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1786, Unknown=0, NotChecked=0, Total=1892 [2025-01-09 03:06:34,188 INFO L87 Difference]: Start difference. First operand 383 states and 434 transitions. Second operand has 44 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 44 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) [2025-01-09 03:06:34,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:34,887 INFO L93 Difference]: Finished difference Result 430 states and 487 transitions. [2025-01-09 03:06:34,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-09 03:06:34,887 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 44 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 34 [2025-01-09 03:06:34,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:34,888 INFO L225 Difference]: With dead ends: 430 [2025-01-09 03:06:34,888 INFO L226 Difference]: Without dead ends: 423 [2025-01-09 03:06:34,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=173, Invalid=3133, Unknown=0, NotChecked=0, Total=3306 [2025-01-09 03:06:34,889 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 66 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:34,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 884 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:06:34,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2025-01-09 03:06:35,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 390. [2025-01-09 03:06:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.1362467866323906) internal successors, (442), 389 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:35,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 442 transitions. [2025-01-09 03:06:35,004 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 442 transitions. Word has length 34 [2025-01-09 03:06:35,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:35,004 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 442 transitions. [2025-01-09 03:06:35,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 44 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) [2025-01-09 03:06:35,004 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 442 transitions. [2025-01-09 03:06:35,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-01-09 03:06:35,005 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:35,005 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:35,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2025-01-09 03:06:35,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,59 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:35,206 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:35,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:35,206 INFO L85 PathProgramCache]: Analyzing trace with hash -367792356, now seen corresponding path program 57 times [2025-01-09 03:06:35,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:35,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450687434] [2025-01-09 03:06:35,206 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:06:35,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:35,210 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 4 equivalence classes. [2025-01-09 03:06:35,214 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 35 of 35 statements. [2025-01-09 03:06:35,214 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 03:06:35,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:35,293 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-09 03:06:35,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:35,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450687434] [2025-01-09 03:06:35,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450687434] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:35,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021792435] [2025-01-09 03:06:35,294 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:06:35,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:35,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:35,295 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:35,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2025-01-09 03:06:35,349 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 4 equivalence classes. [2025-01-09 03:06:35,366 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 35 of 35 statements. [2025-01-09 03:06:35,366 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 03:06:35,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:35,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 03:06:35,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:35,431 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-09 03:06:35,431 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-09 03:06:35,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021792435] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:35,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:35,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2025-01-09 03:06:35,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459685826] [2025-01-09 03:06:35,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:35,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 03:06:35,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:35,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 03:06:35,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2025-01-09 03:06:35,488 INFO L87 Difference]: Start difference. First operand 390 states and 442 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:35,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:35,705 INFO L93 Difference]: Finished difference Result 409 states and 461 transitions. [2025-01-09 03:06:35,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 03:06:35,706 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2025-01-09 03:06:35,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:35,707 INFO L225 Difference]: With dead ends: 409 [2025-01-09 03:06:35,707 INFO L226 Difference]: Without dead ends: 404 [2025-01-09 03:06:35,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 53 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=304, Invalid=566, Unknown=0, NotChecked=0, Total=870 [2025-01-09 03:06:35,707 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 49 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:35,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 132 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:06:35,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2025-01-09 03:06:35,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 371. [2025-01-09 03:06:35,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.1324324324324324) internal successors, (419), 370 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 419 transitions. [2025-01-09 03:06:35,811 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 419 transitions. Word has length 35 [2025-01-09 03:06:35,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:35,812 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 419 transitions. [2025-01-09 03:06:35,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:35,812 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 419 transitions. [2025-01-09 03:06:35,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-01-09 03:06:35,812 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:35,812 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:35,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2025-01-09 03:06:36,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:36,017 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:36,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:36,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1571796052, now seen corresponding path program 58 times [2025-01-09 03:06:36,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:36,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504712402] [2025-01-09 03:06:36,017 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:06:36,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:36,021 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-01-09 03:06:36,023 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-01-09 03:06:36,023 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:06:36,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-09 03:06:36,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:36,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504712402] [2025-01-09 03:06:36,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504712402] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:36,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128322151] [2025-01-09 03:06:36,091 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:06:36,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:36,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:36,093 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:36,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2025-01-09 03:06:36,151 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-01-09 03:06:36,168 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-01-09 03:06:36,168 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:06:36,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:36,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 03:06:36,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-09 03:06:36,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-09 03:06:36,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128322151] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:36,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:36,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2025-01-09 03:06:36,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755177271] [2025-01-09 03:06:36,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:36,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 03:06:36,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:36,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 03:06:36,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2025-01-09 03:06:36,277 INFO L87 Difference]: Start difference. First operand 371 states and 419 transitions. Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:36,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:36,472 INFO L93 Difference]: Finished difference Result 463 states and 528 transitions. [2025-01-09 03:06:36,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 03:06:36,473 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2025-01-09 03:06:36,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:36,474 INFO L225 Difference]: With dead ends: 463 [2025-01-09 03:06:36,474 INFO L226 Difference]: Without dead ends: 379 [2025-01-09 03:06:36,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 54 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=483, Unknown=0, NotChecked=0, Total=756 [2025-01-09 03:06:36,475 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 39 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:36,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 163 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:06:36,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2025-01-09 03:06:36,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2025-01-09 03:06:36,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.1296296296296295) internal successors, (427), 378 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:36,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 427 transitions. [2025-01-09 03:06:36,590 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 427 transitions. Word has length 35 [2025-01-09 03:06:36,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:36,590 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 427 transitions. [2025-01-09 03:06:36,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:36,590 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 427 transitions. [2025-01-09 03:06:36,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-01-09 03:06:36,590 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:36,590 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:36,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2025-01-09 03:06:36,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,61 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:36,791 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:36,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:36,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1324204138, now seen corresponding path program 59 times [2025-01-09 03:06:36,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:36,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294846325] [2025-01-09 03:06:36,791 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:06:36,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:36,795 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 35 statements into 6 equivalence classes. [2025-01-09 03:06:36,798 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 35 of 35 statements. [2025-01-09 03:06:36,798 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-01-09 03:06:36,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:37,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:37,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294846325] [2025-01-09 03:06:37,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294846325] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:37,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319617972] [2025-01-09 03:06:37,028 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:06:37,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:37,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:37,030 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:37,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2025-01-09 03:06:37,085 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 35 statements into 6 equivalence classes. [2025-01-09 03:06:37,103 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 35 of 35 statements. [2025-01-09 03:06:37,103 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-01-09 03:06:37,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:37,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-09 03:06:37,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:37,602 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:37,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:38,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319617972] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:38,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:38,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 48 [2025-01-09 03:06:38,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315025846] [2025-01-09 03:06:38,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:38,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-01-09 03:06:38,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:38,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-01-09 03:06:38,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2118, Unknown=0, NotChecked=0, Total=2256 [2025-01-09 03:06:38,053 INFO L87 Difference]: Start difference. First operand 379 states and 427 transitions. Second operand has 48 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 48 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:38,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:38,791 INFO L93 Difference]: Finished difference Result 550 states and 613 transitions. [2025-01-09 03:06:38,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 03:06:38,792 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 48 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2025-01-09 03:06:38,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:38,793 INFO L225 Difference]: With dead ends: 550 [2025-01-09 03:06:38,793 INFO L226 Difference]: Without dead ends: 515 [2025-01-09 03:06:38,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 34 SyntacticMatches, 9 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=446, Invalid=3586, Unknown=0, NotChecked=0, Total=4032 [2025-01-09 03:06:38,794 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:38,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 378 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:06:38,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2025-01-09 03:06:38,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 421. [2025-01-09 03:06:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.1285714285714286) internal successors, (474), 420 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 474 transitions. [2025-01-09 03:06:38,920 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 474 transitions. Word has length 35 [2025-01-09 03:06:38,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:38,920 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 474 transitions. [2025-01-09 03:06:38,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 48 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:38,921 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 474 transitions. [2025-01-09 03:06:38,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-01-09 03:06:38,921 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:38,921 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:38,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2025-01-09 03:06:39,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2025-01-09 03:06:39,122 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:39,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:39,122 INFO L85 PathProgramCache]: Analyzing trace with hash -853030886, now seen corresponding path program 60 times [2025-01-09 03:06:39,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:39,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986934271] [2025-01-09 03:06:39,122 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:06:39,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:39,125 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 35 statements into 6 equivalence classes. [2025-01-09 03:06:39,130 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 35 of 35 statements. [2025-01-09 03:06:39,130 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-01-09 03:06:39,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:39,399 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:39,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:39,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986934271] [2025-01-09 03:06:39,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986934271] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:39,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582311532] [2025-01-09 03:06:39,399 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:06:39,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:39,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:39,401 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:39,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2025-01-09 03:06:39,455 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 35 statements into 6 equivalence classes. [2025-01-09 03:06:39,473 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 35 of 35 statements. [2025-01-09 03:06:39,474 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-01-09 03:06:39,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:39,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-09 03:06:39,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:39,963 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:40,336 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:40,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582311532] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:40,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:40,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 50 [2025-01-09 03:06:40,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125599290] [2025-01-09 03:06:40,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:40,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-01-09 03:06:40,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:40,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-01-09 03:06:40,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2303, Unknown=0, NotChecked=0, Total=2450 [2025-01-09 03:06:40,337 INFO L87 Difference]: Start difference. First operand 421 states and 474 transitions. Second operand has 50 states, 50 states have (on average 1.52) internal successors, (76), 50 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:41,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:41,184 INFO L93 Difference]: Finished difference Result 442 states and 500 transitions. [2025-01-09 03:06:41,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-09 03:06:41,184 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.52) internal successors, (76), 50 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2025-01-09 03:06:41,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:41,185 INFO L225 Difference]: With dead ends: 442 [2025-01-09 03:06:41,185 INFO L226 Difference]: Without dead ends: 426 [2025-01-09 03:06:41,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 33 SyntacticMatches, 9 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=286, Invalid=3874, Unknown=0, NotChecked=0, Total=4160 [2025-01-09 03:06:41,186 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:41,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 446 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:06:41,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2025-01-09 03:06:41,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2025-01-09 03:06:41,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 1.1270588235294117) internal successors, (479), 425 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:41,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 479 transitions. [2025-01-09 03:06:41,321 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 479 transitions. Word has length 35 [2025-01-09 03:06:41,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:41,321 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 479 transitions. [2025-01-09 03:06:41,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.52) internal successors, (76), 50 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:41,321 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 479 transitions. [2025-01-09 03:06:41,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-01-09 03:06:41,322 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:41,322 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:41,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2025-01-09 03:06:41,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2025-01-09 03:06:41,523 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:41,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:41,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1424111453, now seen corresponding path program 61 times [2025-01-09 03:06:41,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:41,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692605998] [2025-01-09 03:06:41,523 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:06:41,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:41,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 03:06:41,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 03:06:41,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:06:41,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 03:06:41,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:41,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692605998] [2025-01-09 03:06:41,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692605998] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:41,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150275916] [2025-01-09 03:06:41,720 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:06:41,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:41,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:41,722 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:41,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2025-01-09 03:06:41,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 03:06:41,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 03:06:41,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:06:41,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:41,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-01-09 03:06:41,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:42,045 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 03:06:42,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 03:06:42,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150275916] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:42,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:42,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 39 [2025-01-09 03:06:42,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998402529] [2025-01-09 03:06:42,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:42,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-01-09 03:06:42,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:42,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-01-09 03:06:42,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1373, Unknown=0, NotChecked=0, Total=1482 [2025-01-09 03:06:42,189 INFO L87 Difference]: Start difference. First operand 426 states and 479 transitions. Second operand has 39 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:42,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:42,617 INFO L93 Difference]: Finished difference Result 449 states and 505 transitions. [2025-01-09 03:06:42,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 03:06:42,617 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2025-01-09 03:06:42,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:42,619 INFO L225 Difference]: With dead ends: 449 [2025-01-09 03:06:42,619 INFO L226 Difference]: Without dead ends: 444 [2025-01-09 03:06:42,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=2274, Unknown=0, NotChecked=0, Total=2450 [2025-01-09 03:06:42,619 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 28 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:42,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 317 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:06:42,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2025-01-09 03:06:42,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 437. [2025-01-09 03:06:42,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.128440366972477) internal successors, (492), 436 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:42,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 492 transitions. [2025-01-09 03:06:42,780 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 492 transitions. Word has length 36 [2025-01-09 03:06:42,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:42,780 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 492 transitions. [2025-01-09 03:06:42,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:42,781 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 492 transitions. [2025-01-09 03:06:42,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-01-09 03:06:42,781 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:42,781 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:42,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:42,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:42,982 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:42,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:42,982 INFO L85 PathProgramCache]: Analyzing trace with hash -651508003, now seen corresponding path program 62 times [2025-01-09 03:06:42,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:42,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775283973] [2025-01-09 03:06:42,983 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:06:42,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:42,986 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-01-09 03:06:42,990 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 03:06:42,990 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:06:42,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:43,265 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 03:06:43,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:43,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775283973] [2025-01-09 03:06:43,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775283973] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:43,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438969946] [2025-01-09 03:06:43,266 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:06:43,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:43,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:43,267 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:43,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2025-01-09 03:06:43,325 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-01-09 03:06:43,342 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 03:06:43,342 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:06:43,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:43,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-01-09 03:06:43,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 03:06:43,579 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 03:06:43,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438969946] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:43,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:43,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 43 [2025-01-09 03:06:43,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995425872] [2025-01-09 03:06:43,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:43,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-01-09 03:06:43,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:43,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-01-09 03:06:43,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1689, Unknown=0, NotChecked=0, Total=1806 [2025-01-09 03:06:43,792 INFO L87 Difference]: Start difference. First operand 437 states and 492 transitions. Second operand has 43 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 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) [2025-01-09 03:06:44,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:44,339 INFO L93 Difference]: Finished difference Result 451 states and 505 transitions. [2025-01-09 03:06:44,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-09 03:06:44,339 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 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 36 [2025-01-09 03:06:44,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:44,340 INFO L225 Difference]: With dead ends: 451 [2025-01-09 03:06:44,341 INFO L226 Difference]: Without dead ends: 426 [2025-01-09 03:06:44,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=185, Invalid=2785, Unknown=0, NotChecked=0, Total=2970 [2025-01-09 03:06:44,341 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 35 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:44,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 507 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:06:44,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2025-01-09 03:06:44,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2025-01-09 03:06:44,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 1.1294117647058823) internal successors, (480), 425 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:44,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 480 transitions. [2025-01-09 03:06:44,470 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 480 transitions. Word has length 36 [2025-01-09 03:06:44,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:44,470 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 480 transitions. [2025-01-09 03:06:44,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 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) [2025-01-09 03:06:44,470 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 480 transitions. [2025-01-09 03:06:44,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-01-09 03:06:44,471 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:44,471 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:44,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:44,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:44,671 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:44,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:44,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1998178467, now seen corresponding path program 63 times [2025-01-09 03:06:44,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:44,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259799368] [2025-01-09 03:06:44,671 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:06:44,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:44,675 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 36 statements into 4 equivalence classes. [2025-01-09 03:06:44,680 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 03:06:44,680 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 03:06:44,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:44,936 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:06:44,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:44,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259799368] [2025-01-09 03:06:44,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259799368] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:44,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645474257] [2025-01-09 03:06:44,937 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:06:44,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:44,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:44,939 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:44,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2025-01-09 03:06:44,995 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 36 statements into 4 equivalence classes. [2025-01-09 03:06:45,013 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 03:06:45,014 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 03:06:45,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:45,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-01-09 03:06:45,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:45,281 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:06:45,281 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:06:45,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645474257] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:45,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:45,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 43 [2025-01-09 03:06:45,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246945882] [2025-01-09 03:06:45,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:45,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-01-09 03:06:45,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:45,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-01-09 03:06:45,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1695, Unknown=0, NotChecked=0, Total=1806 [2025-01-09 03:06:45,378 INFO L87 Difference]: Start difference. First operand 426 states and 480 transitions. Second operand has 43 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 43 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) [2025-01-09 03:06:45,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:45,890 INFO L93 Difference]: Finished difference Result 441 states and 494 transitions. [2025-01-09 03:06:45,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-09 03:06:45,890 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 43 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 36 [2025-01-09 03:06:45,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:45,892 INFO L225 Difference]: With dead ends: 441 [2025-01-09 03:06:45,892 INFO L226 Difference]: Without dead ends: 417 [2025-01-09 03:06:45,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=2900, Unknown=0, NotChecked=0, Total=3080 [2025-01-09 03:06:45,892 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 45 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:45,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 618 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:06:45,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2025-01-09 03:06:46,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2025-01-09 03:06:46,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.1298076923076923) internal successors, (470), 416 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:46,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 470 transitions. [2025-01-09 03:06:46,027 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 470 transitions. Word has length 36 [2025-01-09 03:06:46,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:46,027 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 470 transitions. [2025-01-09 03:06:46,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 43 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) [2025-01-09 03:06:46,028 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 470 transitions. [2025-01-09 03:06:46,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-01-09 03:06:46,028 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:46,028 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:46,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:46,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,66 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:46,229 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:46,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:46,229 INFO L85 PathProgramCache]: Analyzing trace with hash -148584739, now seen corresponding path program 64 times [2025-01-09 03:06:46,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:46,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279901324] [2025-01-09 03:06:46,230 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:06:46,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:46,235 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-01-09 03:06:46,238 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 03:06:46,239 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:06:46,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:06:46,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:46,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279901324] [2025-01-09 03:06:46,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279901324] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:46,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101173952] [2025-01-09 03:06:46,554 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:06:46,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:46,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:46,556 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:46,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2025-01-09 03:06:46,612 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-01-09 03:06:46,628 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 03:06:46,629 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:06:46,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:46,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-01-09 03:06:46,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:06:46,989 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:47,032 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:06:47,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101173952] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:47,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:47,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 44 [2025-01-09 03:06:47,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961421627] [2025-01-09 03:06:47,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:47,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-01-09 03:06:47,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:47,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-01-09 03:06:47,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1785, Unknown=0, NotChecked=0, Total=1892 [2025-01-09 03:06:47,033 INFO L87 Difference]: Start difference. First operand 417 states and 470 transitions. Second operand has 44 states, 44 states have (on average 1.25) internal successors, (55), 44 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:47,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:47,598 INFO L93 Difference]: Finished difference Result 433 states and 485 transitions. [2025-01-09 03:06:47,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-09 03:06:47,599 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.25) internal successors, (55), 44 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2025-01-09 03:06:47,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:47,600 INFO L225 Difference]: With dead ends: 433 [2025-01-09 03:06:47,600 INFO L226 Difference]: Without dead ends: 410 [2025-01-09 03:06:47,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=3129, Unknown=0, NotChecked=0, Total=3306 [2025-01-09 03:06:47,600 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 59 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:47,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 833 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:06:47,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2025-01-09 03:06:47,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2025-01-09 03:06:47,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.1295843520782396) internal successors, (462), 409 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:47,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 462 transitions. [2025-01-09 03:06:47,736 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 462 transitions. Word has length 36 [2025-01-09 03:06:47,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:47,736 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 462 transitions. [2025-01-09 03:06:47,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.25) internal successors, (55), 44 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:47,736 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 462 transitions. [2025-01-09 03:06:47,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-01-09 03:06:47,736 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:47,736 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:47,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2025-01-09 03:06:47,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:47,937 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:47,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:47,937 INFO L85 PathProgramCache]: Analyzing trace with hash 820918109, now seen corresponding path program 65 times [2025-01-09 03:06:47,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:47,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68846119] [2025-01-09 03:06:47,937 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:06:47,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:47,940 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 6 equivalence classes. [2025-01-09 03:06:47,944 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 03:06:47,944 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-01-09 03:06:47,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:48,238 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:06:48,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:48,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68846119] [2025-01-09 03:06:48,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68846119] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:48,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028311695] [2025-01-09 03:06:48,239 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:06:48,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:48,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:48,241 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:48,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2025-01-09 03:06:48,297 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 6 equivalence classes. [2025-01-09 03:06:48,315 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 03:06:48,315 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-01-09 03:06:48,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:48,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 59 conjuncts are in the unsatisfiable core [2025-01-09 03:06:48,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:06:48,652 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:48,694 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:06:48,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028311695] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:48,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:48,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 46 [2025-01-09 03:06:48,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237158009] [2025-01-09 03:06:48,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:48,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-01-09 03:06:48,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:48,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-01-09 03:06:48,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1962, Unknown=0, NotChecked=0, Total=2070 [2025-01-09 03:06:48,697 INFO L87 Difference]: Start difference. First operand 410 states and 462 transitions. Second operand has 46 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 46 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) [2025-01-09 03:06:49,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:49,366 INFO L93 Difference]: Finished difference Result 459 states and 517 transitions. [2025-01-09 03:06:49,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-09 03:06:49,366 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 46 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 36 [2025-01-09 03:06:49,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:49,367 INFO L225 Difference]: With dead ends: 459 [2025-01-09 03:06:49,367 INFO L226 Difference]: Without dead ends: 452 [2025-01-09 03:06:49,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=3481, Unknown=0, NotChecked=0, Total=3660 [2025-01-09 03:06:49,368 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 72 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:49,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 959 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:06:49,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2025-01-09 03:06:49,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 417. [2025-01-09 03:06:49,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.1298076923076923) internal successors, (470), 416 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:49,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 470 transitions. [2025-01-09 03:06:49,506 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 470 transitions. Word has length 36 [2025-01-09 03:06:49,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:49,506 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 470 transitions. [2025-01-09 03:06:49,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 46 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) [2025-01-09 03:06:49,506 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 470 transitions. [2025-01-09 03:06:49,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-09 03:06:49,507 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:49,507 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:49,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:49,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,68 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:49,709 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:49,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:49,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1140856180, now seen corresponding path program 66 times [2025-01-09 03:06:49,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:49,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445630939] [2025-01-09 03:06:49,709 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:06:49,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:49,713 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 37 statements into 4 equivalence classes. [2025-01-09 03:06:49,716 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 03:06:49,716 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-09 03:06:49,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:49,784 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-09 03:06:49,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:49,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445630939] [2025-01-09 03:06:49,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445630939] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:49,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950272988] [2025-01-09 03:06:49,784 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:06:49,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:49,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:49,786 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:49,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2025-01-09 03:06:49,846 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 37 statements into 4 equivalence classes. [2025-01-09 03:06:49,864 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 03:06:49,864 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-09 03:06:49,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:49,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 03:06:49,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:49,942 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-09 03:06:49,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:49,995 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-09 03:06:49,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950272988] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:49,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:49,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2025-01-09 03:06:49,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820050587] [2025-01-09 03:06:49,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:49,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 03:06:49,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:49,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 03:06:49,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2025-01-09 03:06:49,996 INFO L87 Difference]: Start difference. First operand 417 states and 470 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:50,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:50,300 INFO L93 Difference]: Finished difference Result 584 states and 675 transitions. [2025-01-09 03:06:50,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-09 03:06:50,300 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-01-09 03:06:50,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:50,302 INFO L225 Difference]: With dead ends: 584 [2025-01-09 03:06:50,302 INFO L226 Difference]: Without dead ends: 482 [2025-01-09 03:06:50,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 56 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 03:06:50,302 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:50,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 147 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:06:50,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2025-01-09 03:06:50,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2025-01-09 03:06:50,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.133056133056133) internal successors, (545), 481 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:50,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 545 transitions. [2025-01-09 03:06:50,535 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 545 transitions. Word has length 37 [2025-01-09 03:06:50,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:50,535 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 545 transitions. [2025-01-09 03:06:50,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:50,535 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 545 transitions. [2025-01-09 03:06:50,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-09 03:06:50,536 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:50,536 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:50,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:50,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,69 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:50,737 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:50,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:50,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1138554684, now seen corresponding path program 67 times [2025-01-09 03:06:50,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:50,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446330740] [2025-01-09 03:06:50,737 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:06:50,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:50,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 03:06:50,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 03:06:50,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:06:50,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-09 03:06:50,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:50,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446330740] [2025-01-09 03:06:50,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446330740] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:50,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374128740] [2025-01-09 03:06:50,822 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:06:50,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:50,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:50,824 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:50,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2025-01-09 03:06:50,884 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 03:06:50,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 03:06:50,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:06:50,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:50,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 03:06:50,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-09 03:06:50,977 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-09 03:06:51,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374128740] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:51,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:51,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2025-01-09 03:06:51,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569226938] [2025-01-09 03:06:51,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:51,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 03:06:51,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:51,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 03:06:51,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2025-01-09 03:06:51,027 INFO L87 Difference]: Start difference. First operand 482 states and 545 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:51,341 INFO L93 Difference]: Finished difference Result 540 states and 615 transitions. [2025-01-09 03:06:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-09 03:06:51,342 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-01-09 03:06:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:51,343 INFO L225 Difference]: With dead ends: 540 [2025-01-09 03:06:51,343 INFO L226 Difference]: Without dead ends: 526 [2025-01-09 03:06:51,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 56 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 03:06:51,344 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:51,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 111 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:06:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2025-01-09 03:06:51,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 512. [2025-01-09 03:06:51,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.1448140900195696) internal successors, (585), 511 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 585 transitions. [2025-01-09 03:06:51,508 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 585 transitions. Word has length 37 [2025-01-09 03:06:51,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:51,508 INFO L471 AbstractCegarLoop]: Abstraction has 512 states and 585 transitions. [2025-01-09 03:06:51,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:51,508 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 585 transitions. [2025-01-09 03:06:51,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-09 03:06:51,509 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:51,509 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:51,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:51,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2025-01-09 03:06:51,709 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:51,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:51,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1173729402, now seen corresponding path program 68 times [2025-01-09 03:06:51,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:51,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48197261] [2025-01-09 03:06:51,710 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:06:51,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:51,713 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-01-09 03:06:51,716 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 03:06:51,716 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:06:51,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:52,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:52,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48197261] [2025-01-09 03:06:52,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48197261] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:52,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961193581] [2025-01-09 03:06:52,002 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:06:52,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:52,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:52,004 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:52,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2025-01-09 03:06:52,062 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-01-09 03:06:52,079 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 03:06:52,079 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:06:52,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:52,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-09 03:06:52,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:52,716 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:53,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961193581] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:53,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:53,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 54 [2025-01-09 03:06:53,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016179794] [2025-01-09 03:06:53,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:53,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2025-01-09 03:06:53,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:53,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2025-01-09 03:06:53,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2713, Unknown=0, NotChecked=0, Total=2862 [2025-01-09 03:06:53,292 INFO L87 Difference]: Start difference. First operand 512 states and 585 transitions. Second operand has 54 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 54 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:54,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:54,345 INFO L93 Difference]: Finished difference Result 757 states and 849 transitions. [2025-01-09 03:06:54,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 03:06:54,345 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 54 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-01-09 03:06:54,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:54,347 INFO L225 Difference]: With dead ends: 757 [2025-01-09 03:06:54,347 INFO L226 Difference]: Without dead ends: 719 [2025-01-09 03:06:54,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 34 SyntacticMatches, 9 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=527, Invalid=4585, Unknown=0, NotChecked=0, Total=5112 [2025-01-09 03:06:54,348 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 40 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:54,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 452 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:06:54,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2025-01-09 03:06:54,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 563. [2025-01-09 03:06:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 562 states have (on average 1.1441281138790036) internal successors, (643), 562 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 643 transitions. [2025-01-09 03:06:54,541 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 643 transitions. Word has length 37 [2025-01-09 03:06:54,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:54,541 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 643 transitions. [2025-01-09 03:06:54,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 54 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:54,541 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 643 transitions. [2025-01-09 03:06:54,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-09 03:06:54,542 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:54,542 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:54,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:54,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:54,743 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:54,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:54,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1399768970, now seen corresponding path program 69 times [2025-01-09 03:06:54,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:54,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106920700] [2025-01-09 03:06:54,743 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:06:54,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:54,746 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 6 equivalence classes. [2025-01-09 03:06:54,752 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 03:06:54,752 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 03:06:54,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:55,055 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:55,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:55,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106920700] [2025-01-09 03:06:55,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106920700] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:55,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460885770] [2025-01-09 03:06:55,056 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:06:55,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:55,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:55,058 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:55,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2025-01-09 03:06:55,117 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 6 equivalence classes. [2025-01-09 03:06:55,136 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 03:06:55,137 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 03:06:55,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:55,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-09 03:06:55,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:55,703 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:55,703 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:06:56,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460885770] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:56,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:56,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 54 [2025-01-09 03:06:56,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360774031] [2025-01-09 03:06:56,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:56,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2025-01-09 03:06:56,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:56,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2025-01-09 03:06:56,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2706, Unknown=0, NotChecked=0, Total=2862 [2025-01-09 03:06:56,117 INFO L87 Difference]: Start difference. First operand 563 states and 643 transitions. Second operand has 54 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 54 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:57,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:57,199 INFO L93 Difference]: Finished difference Result 586 states and 672 transitions. [2025-01-09 03:06:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 03:06:57,200 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 54 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-01-09 03:06:57,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:57,201 INFO L225 Difference]: With dead ends: 586 [2025-01-09 03:06:57,201 INFO L226 Difference]: Without dead ends: 569 [2025-01-09 03:06:57,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 33 SyntacticMatches, 10 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=327, Invalid=4785, Unknown=0, NotChecked=0, Total=5112 [2025-01-09 03:06:57,202 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:57,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 521 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:06:57,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2025-01-09 03:06:57,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2025-01-09 03:06:57,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.142605633802817) internal successors, (649), 568 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:57,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 649 transitions. [2025-01-09 03:06:57,404 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 649 transitions. Word has length 37 [2025-01-09 03:06:57,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:57,404 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 649 transitions. [2025-01-09 03:06:57,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 54 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:57,404 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 649 transitions. [2025-01-09 03:06:57,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-09 03:06:57,405 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:57,405 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:57,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2025-01-09 03:06:57,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2025-01-09 03:06:57,610 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:57,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:57,610 INFO L85 PathProgramCache]: Analyzing trace with hash -887177415, now seen corresponding path program 70 times [2025-01-09 03:06:57,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:57,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086382639] [2025-01-09 03:06:57,611 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:06:57,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:57,614 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-01-09 03:06:57,617 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 03:06:57,617 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:06:57,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:57,751 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-01-09 03:06:57,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:57,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086382639] [2025-01-09 03:06:57,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086382639] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:57,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698438605] [2025-01-09 03:06:57,752 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:06:57,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:57,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:57,754 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:57,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2025-01-09 03:06:57,816 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-01-09 03:06:57,835 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 03:06:57,835 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:06:57,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:57,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 03:06:57,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-01-09 03:06:58,052 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-01-09 03:06:58,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698438605] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:58,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:58,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2025-01-09 03:06:58,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567993135] [2025-01-09 03:06:58,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:58,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-01-09 03:06:58,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:58,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-01-09 03:06:58,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2025-01-09 03:06:58,227 INFO L87 Difference]: Start difference. First operand 569 states and 649 transitions. Second operand has 33 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 33 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) [2025-01-09 03:06:58,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:06:58,804 INFO L93 Difference]: Finished difference Result 671 states and 760 transitions. [2025-01-09 03:06:58,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 03:06:58,804 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 33 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 38 [2025-01-09 03:06:58,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:06:58,806 INFO L225 Difference]: With dead ends: 671 [2025-01-09 03:06:58,806 INFO L226 Difference]: Without dead ends: 639 [2025-01-09 03:06:58,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 51 SyntacticMatches, 7 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=1563, Unknown=0, NotChecked=0, Total=1722 [2025-01-09 03:06:58,806 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:06:58,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 422 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:06:58,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2025-01-09 03:06:59,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 632. [2025-01-09 03:06:59,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 631 states have (on average 1.126782884310618) internal successors, (711), 631 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:06:59,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 711 transitions. [2025-01-09 03:06:59,023 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 711 transitions. Word has length 38 [2025-01-09 03:06:59,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:06:59,023 INFO L471 AbstractCegarLoop]: Abstraction has 632 states and 711 transitions. [2025-01-09 03:06:59,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 33 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) [2025-01-09 03:06:59,024 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 711 transitions. [2025-01-09 03:06:59,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-09 03:06:59,024 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:06:59,024 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:06:59,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2025-01-09 03:06:59,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2025-01-09 03:06:59,228 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:06:59,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:06:59,228 INFO L85 PathProgramCache]: Analyzing trace with hash -46164543, now seen corresponding path program 71 times [2025-01-09 03:06:59,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:06:59,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396227736] [2025-01-09 03:06:59,228 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:06:59,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:06:59,231 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 38 statements into 4 equivalence classes. [2025-01-09 03:06:59,235 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 03:06:59,235 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 03:06:59,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-01-09 03:06:59,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:06:59,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396227736] [2025-01-09 03:06:59,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396227736] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:06:59,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503189846] [2025-01-09 03:06:59,365 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:06:59,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:06:59,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:06:59,367 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:06:59,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2025-01-09 03:06:59,426 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 38 statements into 4 equivalence classes. [2025-01-09 03:06:59,444 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 03:06:59,444 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 03:06:59,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:06:59,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 03:06:59,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:06:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-01-09 03:06:59,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:06:59,997 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-01-09 03:06:59,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503189846] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:06:59,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:06:59,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2025-01-09 03:06:59,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646164436] [2025-01-09 03:06:59,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:06:59,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-01-09 03:06:59,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:06:59,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-01-09 03:06:59,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2025-01-09 03:06:59,999 INFO L87 Difference]: Start difference. First operand 632 states and 711 transitions. Second operand has 33 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 33 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) [2025-01-09 03:07:00,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:07:00,467 INFO L93 Difference]: Finished difference Result 684 states and 774 transitions. [2025-01-09 03:07:00,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 03:07:00,467 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 33 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 38 [2025-01-09 03:07:00,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:07:00,469 INFO L225 Difference]: With dead ends: 684 [2025-01-09 03:07:00,469 INFO L226 Difference]: Without dead ends: 626 [2025-01-09 03:07:00,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 52 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=233, Invalid=1573, Unknown=0, NotChecked=0, Total=1806 [2025-01-09 03:07:00,470 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:07:00,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 296 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:07:00,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2025-01-09 03:07:00,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2025-01-09 03:07:00,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 1.112) internal successors, (695), 625 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:00,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 695 transitions. [2025-01-09 03:07:00,710 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 695 transitions. Word has length 38 [2025-01-09 03:07:00,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:07:00,710 INFO L471 AbstractCegarLoop]: Abstraction has 626 states and 695 transitions. [2025-01-09 03:07:00,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 33 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) [2025-01-09 03:07:00,710 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 695 transitions. [2025-01-09 03:07:00,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-09 03:07:00,711 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:07:00,711 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:07:00,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2025-01-09 03:07:00,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:00,912 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:07:00,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:07:00,912 INFO L85 PathProgramCache]: Analyzing trace with hash 245265537, now seen corresponding path program 72 times [2025-01-09 03:07:00,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:07:00,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12775077] [2025-01-09 03:07:00,912 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:07:00,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:07:00,916 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 38 statements into 4 equivalence classes. [2025-01-09 03:07:00,922 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 03:07:00,923 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-09 03:07:00,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:01,248 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 03:07:01,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:07:01,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12775077] [2025-01-09 03:07:01,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12775077] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:07:01,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334690166] [2025-01-09 03:07:01,248 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:07:01,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:01,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:07:01,250 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:07:01,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2025-01-09 03:07:01,311 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 38 statements into 4 equivalence classes. [2025-01-09 03:07:01,330 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 03:07:01,330 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-09 03:07:01,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:01,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-01-09 03:07:01,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:07:01,682 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 03:07:01,682 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:07:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 03:07:01,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334690166] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:07:01,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:07:01,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 42 [2025-01-09 03:07:01,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801152250] [2025-01-09 03:07:01,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:07:01,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-01-09 03:07:01,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:07:01,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-01-09 03:07:01,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1606, Unknown=0, NotChecked=0, Total=1722 [2025-01-09 03:07:01,795 INFO L87 Difference]: Start difference. First operand 626 states and 695 transitions. Second operand has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 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) [2025-01-09 03:07:02,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:07:02,365 INFO L93 Difference]: Finished difference Result 660 states and 732 transitions. [2025-01-09 03:07:02,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-09 03:07:02,368 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 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 38 [2025-01-09 03:07:02,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:07:02,370 INFO L225 Difference]: With dead ends: 660 [2025-01-09 03:07:02,370 INFO L226 Difference]: Without dead ends: 633 [2025-01-09 03:07:02,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=187, Invalid=2675, Unknown=0, NotChecked=0, Total=2862 [2025-01-09 03:07:02,371 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:07:02,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 426 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:07:02,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2025-01-09 03:07:02,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 623. [2025-01-09 03:07:02,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 1.1141479099678457) internal successors, (693), 622 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:02,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 693 transitions. [2025-01-09 03:07:02,589 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 693 transitions. Word has length 38 [2025-01-09 03:07:02,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:07:02,589 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 693 transitions. [2025-01-09 03:07:02,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 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) [2025-01-09 03:07:02,590 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 693 transitions. [2025-01-09 03:07:02,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-09 03:07:02,590 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:07:02,590 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:07:02,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2025-01-09 03:07:02,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:02,791 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:07:02,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:07:02,791 INFO L85 PathProgramCache]: Analyzing trace with hash 22681217, now seen corresponding path program 73 times [2025-01-09 03:07:02,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:07:02,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246096280] [2025-01-09 03:07:02,791 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:07:02,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:07:02,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-09 03:07:02,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 03:07:02,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:07:02,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 03:07:03,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:07:03,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246096280] [2025-01-09 03:07:03,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246096280] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:07:03,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629500656] [2025-01-09 03:07:03,093 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:07:03,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:03,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:07:03,103 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:07:03,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2025-01-09 03:07:03,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-09 03:07:03,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 03:07:03,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:07:03,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:03,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-01-09 03:07:03,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:07:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 03:07:03,585 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:07:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 03:07:03,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629500656] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:07:03,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:07:03,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 44 [2025-01-09 03:07:03,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609944686] [2025-01-09 03:07:03,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:07:03,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-01-09 03:07:03,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:07:03,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-01-09 03:07:03,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1775, Unknown=0, NotChecked=0, Total=1892 [2025-01-09 03:07:03,696 INFO L87 Difference]: Start difference. First operand 623 states and 693 transitions. Second operand has 44 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 44 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) [2025-01-09 03:07:04,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:07:04,301 INFO L93 Difference]: Finished difference Result 638 states and 707 transitions. [2025-01-09 03:07:04,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-09 03:07:04,301 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 44 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 38 [2025-01-09 03:07:04,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:07:04,303 INFO L225 Difference]: With dead ends: 638 [2025-01-09 03:07:04,303 INFO L226 Difference]: Without dead ends: 612 [2025-01-09 03:07:04,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=3003, Unknown=0, NotChecked=0, Total=3192 [2025-01-09 03:07:04,306 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 41 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:07:04,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 577 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:07:04,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2025-01-09 03:07:04,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2025-01-09 03:07:04,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 1.1145662847790507) internal successors, (681), 611 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) [2025-01-09 03:07:04,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 681 transitions. [2025-01-09 03:07:04,523 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 681 transitions. Word has length 38 [2025-01-09 03:07:04,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:07:04,523 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 681 transitions. [2025-01-09 03:07:04,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 44 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) [2025-01-09 03:07:04,523 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 681 transitions. [2025-01-09 03:07:04,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-09 03:07:04,524 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:07:04,524 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:07:04,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2025-01-09 03:07:04,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,76 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:04,726 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:07:04,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:07:04,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1104585601, now seen corresponding path program 74 times [2025-01-09 03:07:04,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:07:04,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116975468] [2025-01-09 03:07:04,727 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:07:04,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:07:04,730 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-01-09 03:07:04,734 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 03:07:04,734 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:07:04,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:07:05,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:07:05,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116975468] [2025-01-09 03:07:05,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116975468] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:07:05,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575375256] [2025-01-09 03:07:05,138 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:07:05,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:05,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:07:05,140 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:07:05,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2025-01-09 03:07:05,204 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-01-09 03:07:05,222 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 03:07:05,222 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:07:05,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:05,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-01-09 03:07:05,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:07:05,687 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:07:05,688 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:07:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:07:05,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575375256] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:07:05,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:07:05,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 46 [2025-01-09 03:07:05,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279471436] [2025-01-09 03:07:05,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:07:05,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-01-09 03:07:05,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:07:05,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-01-09 03:07:05,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1952, Unknown=0, NotChecked=0, Total=2070 [2025-01-09 03:07:05,785 INFO L87 Difference]: Start difference. First operand 612 states and 681 transitions. Second operand has 46 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 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) [2025-01-09 03:07:06,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:07:06,542 INFO L93 Difference]: Finished difference Result 628 states and 696 transitions. [2025-01-09 03:07:06,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-09 03:07:06,542 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 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 38 [2025-01-09 03:07:06,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:07:06,544 INFO L225 Difference]: With dead ends: 628 [2025-01-09 03:07:06,544 INFO L226 Difference]: Without dead ends: 603 [2025-01-09 03:07:06,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=191, Invalid=3349, Unknown=0, NotChecked=0, Total=3540 [2025-01-09 03:07:06,545 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 53 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:07:06,545 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 775 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:07:06,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2025-01-09 03:07:06,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2025-01-09 03:07:06,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 1.1146179401993355) internal successors, (671), 602 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) [2025-01-09 03:07:06,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 671 transitions. [2025-01-09 03:07:06,757 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 671 transitions. Word has length 38 [2025-01-09 03:07:06,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:07:06,757 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 671 transitions. [2025-01-09 03:07:06,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 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) [2025-01-09 03:07:06,758 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 671 transitions. [2025-01-09 03:07:06,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-09 03:07:06,758 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:07:06,758 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:07:06,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2025-01-09 03:07:06,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:06,959 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:07:06,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:07:06,959 INFO L85 PathProgramCache]: Analyzing trace with hash -982653055, now seen corresponding path program 75 times [2025-01-09 03:07:06,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:07:06,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248460432] [2025-01-09 03:07:06,959 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:07:06,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:07:06,963 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 5 equivalence classes. [2025-01-09 03:07:06,971 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 03:07:06,971 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-09 03:07:06,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:07,398 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:07:07,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:07:07,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248460432] [2025-01-09 03:07:07,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248460432] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:07:07,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418557645] [2025-01-09 03:07:07,399 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:07:07,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:07,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:07:07,401 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:07:07,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2025-01-09 03:07:07,466 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 5 equivalence classes. [2025-01-09 03:07:07,486 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 03:07:07,486 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-09 03:07:07,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:07,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-01-09 03:07:07,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:07:07,668 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:07:07,668 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:07:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:07:07,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418557645] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:07:07,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:07:07,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 48 [2025-01-09 03:07:07,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594440721] [2025-01-09 03:07:07,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:07:07,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-01-09 03:07:07,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:07:07,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-01-09 03:07:07,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=2138, Unknown=0, NotChecked=0, Total=2256 [2025-01-09 03:07:07,952 INFO L87 Difference]: Start difference. First operand 603 states and 671 transitions. Second operand has 48 states, 48 states have (on average 1.25) internal successors, (60), 48 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) [2025-01-09 03:07:08,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:07:08,752 INFO L93 Difference]: Finished difference Result 620 states and 687 transitions. [2025-01-09 03:07:08,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-09 03:07:08,753 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.25) internal successors, (60), 48 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 38 [2025-01-09 03:07:08,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:07:08,754 INFO L225 Difference]: With dead ends: 620 [2025-01-09 03:07:08,755 INFO L226 Difference]: Without dead ends: 596 [2025-01-09 03:07:08,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=192, Invalid=3714, Unknown=0, NotChecked=0, Total=3906 [2025-01-09 03:07:08,755 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 65 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:07:08,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 895 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:07:08,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2025-01-09 03:07:08,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2025-01-09 03:07:08,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 595 states have (on average 1.1142857142857143) internal successors, (663), 595 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 663 transitions. [2025-01-09 03:07:08,966 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 663 transitions. Word has length 38 [2025-01-09 03:07:08,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:07:08,966 INFO L471 AbstractCegarLoop]: Abstraction has 596 states and 663 transitions. [2025-01-09 03:07:08,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.25) internal successors, (60), 48 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) [2025-01-09 03:07:08,966 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 663 transitions. [2025-01-09 03:07:08,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-09 03:07:08,967 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:07:08,967 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:07:08,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2025-01-09 03:07:09,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2025-01-09 03:07:09,167 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:07:09,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:07:09,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1051906689, now seen corresponding path program 76 times [2025-01-09 03:07:09,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:07:09,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968299459] [2025-01-09 03:07:09,168 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:07:09,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:07:09,172 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-01-09 03:07:09,175 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 03:07:09,176 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:07:09,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:07:09,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:07:09,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968299459] [2025-01-09 03:07:09,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968299459] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:07:09,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355720559] [2025-01-09 03:07:09,535 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:07:09,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:09,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:07:09,537 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:07:09,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2025-01-09 03:07:09,602 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-01-09 03:07:09,620 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 03:07:09,620 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:07:09,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:09,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-01-09 03:07:09,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:07:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:07:10,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:07:10,135 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:07:10,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355720559] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:07:10,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:07:10,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 49 [2025-01-09 03:07:10,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292780014] [2025-01-09 03:07:10,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:07:10,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-01-09 03:07:10,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:07:10,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-01-09 03:07:10,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=2237, Unknown=0, NotChecked=0, Total=2352 [2025-01-09 03:07:10,137 INFO L87 Difference]: Start difference. First operand 596 states and 663 transitions. Second operand has 49 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 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) [2025-01-09 03:07:11,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:07:11,055 INFO L93 Difference]: Finished difference Result 654 states and 728 transitions. [2025-01-09 03:07:11,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-09 03:07:11,056 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 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 38 [2025-01-09 03:07:11,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:07:11,058 INFO L225 Difference]: With dead ends: 654 [2025-01-09 03:07:11,058 INFO L226 Difference]: Without dead ends: 647 [2025-01-09 03:07:11,058 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=190, Invalid=3970, Unknown=0, NotChecked=0, Total=4160 [2025-01-09 03:07:11,058 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 81 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 03:07:11,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1033 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 03:07:11,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2025-01-09 03:07:11,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 603. [2025-01-09 03:07:11,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 1.1146179401993355) internal successors, (671), 602 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) [2025-01-09 03:07:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 671 transitions. [2025-01-09 03:07:11,262 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 671 transitions. Word has length 38 [2025-01-09 03:07:11,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:07:11,262 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 671 transitions. [2025-01-09 03:07:11,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 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) [2025-01-09 03:07:11,262 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 671 transitions. [2025-01-09 03:07:11,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-09 03:07:11,263 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:07:11,263 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:07:11,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2025-01-09 03:07:11,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:11,467 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:07:11,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:07:11,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1267488804, now seen corresponding path program 77 times [2025-01-09 03:07:11,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:07:11,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920191638] [2025-01-09 03:07:11,467 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:07:11,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:07:11,474 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 4 equivalence classes. [2025-01-09 03:07:11,478 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 03:07:11,478 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 03:07:11,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-09 03:07:11,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:07:11,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920191638] [2025-01-09 03:07:11,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920191638] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:07:11,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932822940] [2025-01-09 03:07:11,564 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:07:11,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:11,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:07:11,567 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:07:11,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2025-01-09 03:07:11,632 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 4 equivalence classes. [2025-01-09 03:07:11,650 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 03:07:11,650 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 03:07:11,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:11,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 03:07:11,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:07:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-09 03:07:11,723 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:07:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-09 03:07:11,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932822940] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:07:11,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:07:11,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 21 [2025-01-09 03:07:11,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27068379] [2025-01-09 03:07:11,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:07:11,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 03:07:11,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:07:11,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 03:07:11,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=267, Unknown=0, NotChecked=0, Total=420 [2025-01-09 03:07:11,803 INFO L87 Difference]: Start difference. First operand 603 states and 671 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:12,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:07:12,162 INFO L93 Difference]: Finished difference Result 628 states and 696 transitions. [2025-01-09 03:07:12,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-01-09 03:07:12,162 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-01-09 03:07:12,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:07:12,164 INFO L225 Difference]: With dead ends: 628 [2025-01-09 03:07:12,164 INFO L226 Difference]: Without dead ends: 623 [2025-01-09 03:07:12,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 59 SyntacticMatches, 13 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=448, Invalid=812, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 03:07:12,164 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 53 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:07:12,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 114 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:07:12,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2025-01-09 03:07:12,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 582. [2025-01-09 03:07:12,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 581 states have (on average 1.1118760757314974) internal successors, (646), 581 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 646 transitions. [2025-01-09 03:07:12,370 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 646 transitions. Word has length 39 [2025-01-09 03:07:12,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:07:12,370 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 646 transitions. [2025-01-09 03:07:12,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:12,370 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 646 transitions. [2025-01-09 03:07:12,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-09 03:07:12,371 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:07:12,371 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:07:12,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2025-01-09 03:07:12,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2025-01-09 03:07:12,575 INFO L396 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:07:12,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:07:12,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1509303452, now seen corresponding path program 78 times [2025-01-09 03:07:12,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:07:12,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017205568] [2025-01-09 03:07:12,576 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:07:12,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:07:12,580 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 39 statements into 4 equivalence classes. [2025-01-09 03:07:12,584 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 03:07:12,584 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-09 03:07:12,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:12,683 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-09 03:07:12,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:07:12,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017205568] [2025-01-09 03:07:12,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017205568] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:07:12,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200446834] [2025-01-09 03:07:12,685 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:07:12,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:12,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:07:12,688 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:07:12,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2025-01-09 03:07:12,750 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 39 statements into 4 equivalence classes. [2025-01-09 03:07:12,769 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 03:07:12,769 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-09 03:07:12,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:12,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 03:07:12,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:07:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-09 03:07:12,840 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:07:12,911 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-09 03:07:12,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200446834] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:07:12,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:07:12,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2025-01-09 03:07:12,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276645903] [2025-01-09 03:07:12,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:07:12,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 03:07:12,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:07:12,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 03:07:12,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=329, Unknown=0, NotChecked=0, Total=506 [2025-01-09 03:07:12,912 INFO L87 Difference]: Start difference. First operand 582 states and 646 transitions. Second operand has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:13,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:07:13,306 INFO L93 Difference]: Finished difference Result 705 states and 790 transitions. [2025-01-09 03:07:13,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-01-09 03:07:13,307 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-01-09 03:07:13,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:07:13,308 INFO L225 Difference]: With dead ends: 705 [2025-01-09 03:07:13,308 INFO L226 Difference]: Without dead ends: 592 [2025-01-09 03:07:13,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 58 SyntacticMatches, 12 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=487, Invalid=919, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 03:07:13,309 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 46 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:07:13,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 163 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:07:13,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2025-01-09 03:07:13,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2025-01-09 03:07:13,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 591 states have (on average 1.1099830795262267) internal successors, (656), 591 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 656 transitions. [2025-01-09 03:07:13,512 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 656 transitions. Word has length 39 [2025-01-09 03:07:13,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:07:13,514 INFO L471 AbstractCegarLoop]: Abstraction has 592 states and 656 transitions. [2025-01-09 03:07:13,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:13,515 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 656 transitions. [2025-01-09 03:07:13,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-09 03:07:13,515 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:07:13,515 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:07:13,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2025-01-09 03:07:13,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,81 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:13,716 INFO L396 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:07:13,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:07:13,716 INFO L85 PathProgramCache]: Analyzing trace with hash -255559210, now seen corresponding path program 79 times [2025-01-09 03:07:13,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:07:13,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162852570] [2025-01-09 03:07:13,717 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:07:13,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:07:13,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 03:07:13,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 03:07:13,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:07:13,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:14,099 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:07:14,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:07:14,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162852570] [2025-01-09 03:07:14,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162852570] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:07:14,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268431915] [2025-01-09 03:07:14,099 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:07:14,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:14,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:07:14,101 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:07:14,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2025-01-09 03:07:14,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 03:07:14,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 03:07:14,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:07:14,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:14,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-09 03:07:14,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:07:14,874 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:07:14,874 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:07:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:07:15,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268431915] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:07:15,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:07:15,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 59 [2025-01-09 03:07:15,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813524653] [2025-01-09 03:07:15,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:07:15,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2025-01-09 03:07:15,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:07:15,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2025-01-09 03:07:15,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=3259, Unknown=0, NotChecked=0, Total=3422 [2025-01-09 03:07:15,519 INFO L87 Difference]: Start difference. First operand 592 states and 656 transitions. Second operand has 59 states, 59 states have (on average 1.4406779661016949) internal successors, (85), 59 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:16,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:07:16,868 INFO L93 Difference]: Finished difference Result 871 states and 953 transitions. [2025-01-09 03:07:16,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-09 03:07:16,869 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.4406779661016949) internal successors, (85), 59 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-01-09 03:07:16,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:07:16,871 INFO L225 Difference]: With dead ends: 871 [2025-01-09 03:07:16,872 INFO L226 Difference]: Without dead ends: 831 [2025-01-09 03:07:16,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 34 SyntacticMatches, 10 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=618, Invalid=5544, Unknown=0, NotChecked=0, Total=6162 [2025-01-09 03:07:16,872 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 42 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:07:16,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 474 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:07:16,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2025-01-09 03:07:17,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 651. [2025-01-09 03:07:17,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 650 states have (on average 1.1092307692307692) internal successors, (721), 650 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:17,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 721 transitions. [2025-01-09 03:07:17,117 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 721 transitions. Word has length 39 [2025-01-09 03:07:17,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:07:17,117 INFO L471 AbstractCegarLoop]: Abstraction has 651 states and 721 transitions. [2025-01-09 03:07:17,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.4406779661016949) internal successors, (85), 59 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:17,117 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 721 transitions. [2025-01-09 03:07:17,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-09 03:07:17,118 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:07:17,118 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:07:17,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2025-01-09 03:07:17,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,82 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:17,322 INFO L396 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:07:17,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:07:17,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1570369882, now seen corresponding path program 80 times [2025-01-09 03:07:17,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:07:17,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310383464] [2025-01-09 03:07:17,322 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:07:17,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:07:17,326 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-01-09 03:07:17,329 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 03:07:17,329 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:07:17,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:07:17,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:07:17,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310383464] [2025-01-09 03:07:17,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310383464] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:07:17,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191553984] [2025-01-09 03:07:17,694 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:07:17,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:17,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:07:17,696 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:07:17,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2025-01-09 03:07:17,760 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-01-09 03:07:17,778 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 03:07:17,779 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:07:17,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:17,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-09 03:07:17,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:07:18,339 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:07:18,339 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:07:18,889 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 03:07:18,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191553984] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:07:18,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:07:18,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 60 [2025-01-09 03:07:18,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359570284] [2025-01-09 03:07:18,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:07:18,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2025-01-09 03:07:18,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:07:18,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2025-01-09 03:07:18,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=3354, Unknown=0, NotChecked=0, Total=3540 [2025-01-09 03:07:18,891 INFO L87 Difference]: Start difference. First operand 651 states and 721 transitions. Second operand has 60 states, 60 states have (on average 1.4333333333333333) internal successors, (86), 60 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:20,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:07:20,181 INFO L93 Difference]: Finished difference Result 675 states and 751 transitions. [2025-01-09 03:07:20,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-09 03:07:20,181 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.4333333333333333) internal successors, (86), 60 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-01-09 03:07:20,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:07:20,183 INFO L225 Difference]: With dead ends: 675 [2025-01-09 03:07:20,183 INFO L226 Difference]: Without dead ends: 657 [2025-01-09 03:07:20,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 33 SyntacticMatches, 11 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=381, Invalid=5781, Unknown=0, NotChecked=0, Total=6162 [2025-01-09 03:07:20,184 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:07:20,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 561 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:07:20,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2025-01-09 03:07:20,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2025-01-09 03:07:20,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 1.108231707317073) internal successors, (727), 656 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:20,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 727 transitions. [2025-01-09 03:07:20,426 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 727 transitions. Word has length 39 [2025-01-09 03:07:20,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:07:20,426 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 727 transitions. [2025-01-09 03:07:20,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.4333333333333333) internal successors, (86), 60 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:20,427 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 727 transitions. [2025-01-09 03:07:20,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-01-09 03:07:20,427 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:07:20,427 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:07:20,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2025-01-09 03:07:20,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2025-01-09 03:07:20,632 INFO L396 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:07:20,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:07:20,633 INFO L85 PathProgramCache]: Analyzing trace with hash -696674659, now seen corresponding path program 81 times [2025-01-09 03:07:20,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:07:20,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132417308] [2025-01-09 03:07:20,633 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:07:20,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:07:20,639 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 40 statements into 4 equivalence classes. [2025-01-09 03:07:20,648 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 40 of 40 statements. [2025-01-09 03:07:20,648 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 03:07:20,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-01-09 03:07:20,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:07:20,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132417308] [2025-01-09 03:07:20,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132417308] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:07:20,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796799892] [2025-01-09 03:07:20,913 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:07:20,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:20,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:07:20,916 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:07:20,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2025-01-09 03:07:20,984 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 40 statements into 4 equivalence classes. [2025-01-09 03:07:21,004 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 40 of 40 statements. [2025-01-09 03:07:21,004 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 03:07:21,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:21,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-01-09 03:07:21,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:07:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-01-09 03:07:21,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:07:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-01-09 03:07:21,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796799892] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:07:21,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:07:21,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 43 [2025-01-09 03:07:21,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432288339] [2025-01-09 03:07:21,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:07:21,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-01-09 03:07:21,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:07:21,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-01-09 03:07:21,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1684, Unknown=0, NotChecked=0, Total=1806 [2025-01-09 03:07:21,466 INFO L87 Difference]: Start difference. First operand 657 states and 727 transitions. Second operand has 43 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 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) [2025-01-09 03:07:22,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:07:22,074 INFO L93 Difference]: Finished difference Result 682 states and 755 transitions. [2025-01-09 03:07:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-09 03:07:22,075 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 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 40 [2025-01-09 03:07:22,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:07:22,076 INFO L225 Difference]: With dead ends: 682 [2025-01-09 03:07:22,076 INFO L226 Difference]: Without dead ends: 677 [2025-01-09 03:07:22,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=196, Invalid=2774, Unknown=0, NotChecked=0, Total=2970 [2025-01-09 03:07:22,077 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:07:22,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 350 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:07:22,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2025-01-09 03:07:22,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 669. [2025-01-09 03:07:22,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 1.1092814371257484) internal successors, (741), 668 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:22,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 741 transitions. [2025-01-09 03:07:22,324 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 741 transitions. Word has length 40 [2025-01-09 03:07:22,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:07:22,324 INFO L471 AbstractCegarLoop]: Abstraction has 669 states and 741 transitions. [2025-01-09 03:07:22,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 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) [2025-01-09 03:07:22,324 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 741 transitions. [2025-01-09 03:07:22,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-01-09 03:07:22,324 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:07:22,324 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:07:22,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2025-01-09 03:07:22,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:22,525 INFO L396 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:07:22,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:07:22,525 INFO L85 PathProgramCache]: Analyzing trace with hash -53397987, now seen corresponding path program 82 times [2025-01-09 03:07:22,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:07:22,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912051372] [2025-01-09 03:07:22,525 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:07:22,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:07:22,531 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 40 statements into 2 equivalence classes. [2025-01-09 03:07:22,535 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-01-09 03:07:22,536 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:07:22,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:22,890 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 03:07:22,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:07:22,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912051372] [2025-01-09 03:07:22,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912051372] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:07:22,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965950732] [2025-01-09 03:07:22,891 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:07:22,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:22,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:07:22,894 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:07:22,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2025-01-09 03:07:22,960 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 40 statements into 2 equivalence classes. [2025-01-09 03:07:22,979 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-01-09 03:07:22,979 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:07:22,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:22,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-01-09 03:07:22,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:07:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 03:07:23,436 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:07:23,491 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 03:07:23,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965950732] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:07:23,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:07:23,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 44 [2025-01-09 03:07:23,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413763919] [2025-01-09 03:07:23,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:07:23,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-01-09 03:07:23,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:07:23,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-01-09 03:07:23,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1774, Unknown=0, NotChecked=0, Total=1892 [2025-01-09 03:07:23,492 INFO L87 Difference]: Start difference. First operand 669 states and 741 transitions. Second operand has 44 states, 44 states have (on average 1.25) internal successors, (55), 44 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:24,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:07:24,163 INFO L93 Difference]: Finished difference Result 684 states and 755 transitions. [2025-01-09 03:07:24,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-09 03:07:24,163 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.25) internal successors, (55), 44 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2025-01-09 03:07:24,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:07:24,165 INFO L225 Difference]: With dead ends: 684 [2025-01-09 03:07:24,165 INFO L226 Difference]: Without dead ends: 656 [2025-01-09 03:07:24,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=193, Invalid=2999, Unknown=0, NotChecked=0, Total=3192 [2025-01-09 03:07:24,166 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 33 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:07:24,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 520 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:07:24,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2025-01-09 03:07:24,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 656. [2025-01-09 03:07:24,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 1.1099236641221375) internal successors, (727), 655 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:24,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 727 transitions. [2025-01-09 03:07:24,407 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 727 transitions. Word has length 40 [2025-01-09 03:07:24,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:07:24,407 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 727 transitions. [2025-01-09 03:07:24,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.25) internal successors, (55), 44 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:07:24,407 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 727 transitions. [2025-01-09 03:07:24,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-01-09 03:07:24,408 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:07:24,408 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:07:24,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2025-01-09 03:07:24,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,85 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:24,612 INFO L396 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:07:24,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:07:24,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2114087267, now seen corresponding path program 83 times [2025-01-09 03:07:24,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:07:24,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161325758] [2025-01-09 03:07:24,612 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:07:24,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:07:24,616 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 40 statements into 4 equivalence classes. [2025-01-09 03:07:24,620 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 40 of 40 statements. [2025-01-09 03:07:24,620 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 03:07:24,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:24,962 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 03:07:24,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:07:24,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161325758] [2025-01-09 03:07:24,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161325758] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:07:24,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011784431] [2025-01-09 03:07:24,963 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:07:24,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:07:24,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:07:24,964 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:07:24,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2025-01-09 03:07:25,031 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 40 statements into 4 equivalence classes. [2025-01-09 03:07:25,051 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 40 of 40 statements. [2025-01-09 03:07:25,051 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 03:07:25,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:07:25,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-01-09 03:07:25,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:07:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 03:07:25,509 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:07:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 03:07:25,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011784431] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:07:25,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:07:25,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 46 [2025-01-09 03:07:25,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921236543] [2025-01-09 03:07:25,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:07:25,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-01-09 03:07:25,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:07:25,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-01-09 03:07:25,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1951, Unknown=0, NotChecked=0, Total=2070 [2025-01-09 03:07:25,567 INFO L87 Difference]: Start difference. First operand 656 states and 727 transitions. Second operand has 46 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 46 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) [2025-01-09 03:07:26,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:07:26,290 INFO L93 Difference]: Finished difference Result 672 states and 742 transitions. [2025-01-09 03:07:26,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-09 03:07:26,290 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 46 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 40 [2025-01-09 03:07:26,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:07:26,292 INFO L225 Difference]: With dead ends: 672 [2025-01-09 03:07:26,292 INFO L226 Difference]: Without dead ends: 645 [2025-01-09 03:07:26,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=195, Invalid=3345, Unknown=0, NotChecked=0, Total=3540 [2025-01-09 03:07:26,293 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 47 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:07:26,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 710 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:07:26,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states.