./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/mono-crafted_13.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/mono-crafted_13.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 7a1978d5df6cab978f117700980416150440efa7bda2d4cde0711b48b83f0666 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 03:03:15,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 03:03:15,356 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 03:03:15,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 03:03:15,360 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 03:03:15,374 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 03:03:15,374 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 03:03:15,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 03:03:15,375 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 03:03:15,375 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 03:03:15,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 03:03:15,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 03:03:15,375 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 03:03:15,375 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 03:03:15,375 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 03:03:15,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 03:03:15,376 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 03:03:15,376 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 03:03:15,376 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 03:03:15,376 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 03:03:15,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 03:03:15,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 03:03:15,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 03:03:15,376 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 03:03:15,376 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 03:03:15,376 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 03:03:15,377 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 03:03:15,377 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 03:03:15,377 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 03:03:15,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:03:15,377 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:03:15,377 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:03:15,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:03:15,377 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 03:03:15,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:03:15,377 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:03:15,377 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:03:15,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:03:15,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 03:03:15,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 03:03:15,378 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 03:03:15,378 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 03:03:15,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 03:03:15,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 03:03:15,378 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 03:03:15,378 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 03:03:15,378 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 03:03:15,378 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 03:03:15,378 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 -> 7a1978d5df6cab978f117700980416150440efa7bda2d4cde0711b48b83f0666 [2025-01-09 03:03:15,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 03:03:15,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 03:03:15,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 03:03:15,649 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 03:03:15,650 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 03:03:15,650 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/mono-crafted_13.c [2025-01-09 03:03:16,886 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/27b890e95/1ccf99e238bf43e89b5d5ab00065f1e1/FLAGb7b9ed210 [2025-01-09 03:03:17,102 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 03:03:17,103 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_13.c [2025-01-09 03:03:17,108 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/27b890e95/1ccf99e238bf43e89b5d5ab00065f1e1/FLAGb7b9ed210 [2025-01-09 03:03:17,133 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/27b890e95/1ccf99e238bf43e89b5d5ab00065f1e1 [2025-01-09 03:03:17,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 03:03:17,138 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 03:03:17,143 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 03:03:17,166 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 03:03:17,170 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 03:03:17,171 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:03:17" (1/1) ... [2025-01-09 03:03:17,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9cd919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:17, skipping insertion in model container [2025-01-09 03:03:17,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:03:17" (1/1) ... [2025-01-09 03:03:17,185 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 03:03:17,338 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/mono-crafted_13.c[319,332] [2025-01-09 03:03:17,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:03:17,357 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 03:03:17,364 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/mono-crafted_13.c[319,332] [2025-01-09 03:03:17,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:03:17,377 INFO L204 MainTranslator]: Completed translation [2025-01-09 03:03:17,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:17 WrapperNode [2025-01-09 03:03:17,379 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 03:03:17,379 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 03:03:17,380 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 03:03:17,380 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 03:03:17,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:17" (1/1) ... [2025-01-09 03:03:17,389 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:17" (1/1) ... [2025-01-09 03:03:17,398 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2025-01-09 03:03:17,398 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 03:03:17,399 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 03:03:17,399 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 03:03:17,399 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 03:03:17,405 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:17" (1/1) ... [2025-01-09 03:03:17,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:17" (1/1) ... [2025-01-09 03:03:17,407 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:17" (1/1) ... [2025-01-09 03:03:17,416 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 03:03:17,416 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:17" (1/1) ... [2025-01-09 03:03:17,417 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:17" (1/1) ... [2025-01-09 03:03:17,418 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:17" (1/1) ... [2025-01-09 03:03:17,419 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:17" (1/1) ... [2025-01-09 03:03:17,421 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:17" (1/1) ... [2025-01-09 03:03:17,424 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:17" (1/1) ... [2025-01-09 03:03:17,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:17" (1/1) ... [2025-01-09 03:03:17,425 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 03:03:17,425 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 03:03:17,425 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 03:03:17,425 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 03:03:17,426 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:17" (1/1) ... [2025-01-09 03:03:17,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:03:17,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:17,449 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 03:03:17,452 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 03:03:17,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 03:03:17,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 03:03:17,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 03:03:17,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 03:03:17,511 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 03:03:17,513 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 03:03:17,585 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2025-01-09 03:03:17,586 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 03:03:17,591 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 03:03:17,591 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 03:03:17,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:03:17 BoogieIcfgContainer [2025-01-09 03:03:17,591 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 03:03:17,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 03:03:17,593 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 03:03:17,596 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 03:03:17,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 03:03:17" (1/3) ... [2025-01-09 03:03:17,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66651622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:03:17, skipping insertion in model container [2025-01-09 03:03:17,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:03:17" (2/3) ... [2025-01-09 03:03:17,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66651622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:03:17, skipping insertion in model container [2025-01-09 03:03:17,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:03:17" (3/3) ... [2025-01-09 03:03:17,598 INFO L128 eAbstractionObserver]: Analyzing ICFG mono-crafted_13.c [2025-01-09 03:03:17,607 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 03:03:17,609 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mono-crafted_13.c that has 1 procedures, 12 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-01-09 03:03:17,644 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 03:03:17,655 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;@59baad14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 03:03:17,655 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 03:03:17,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 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 03:03:17,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-09 03:03:17,663 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:17,663 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-09 03:03:17,663 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:17,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:17,668 INFO L85 PathProgramCache]: Analyzing trace with hash 889787755, now seen corresponding path program 1 times [2025-01-09 03:03:17,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:17,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437122289] [2025-01-09 03:03:17,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:17,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:17,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 03:03:17,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 03:03:17,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:17,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:17,855 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 03:03:17,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:17,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437122289] [2025-01-09 03:03:17,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437122289] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:03:17,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:03:17,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 03:03:17,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32879103] [2025-01-09 03:03:17,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:03:17,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 03:03:17,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:17,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 03:03:17,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 03:03:17,895 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 03:03:17,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:17,936 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2025-01-09 03:03:17,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 03:03:17,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 03:03:17,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:17,946 INFO L225 Difference]: With dead ends: 24 [2025-01-09 03:03:17,951 INFO L226 Difference]: Without dead ends: 10 [2025-01-09 03:03:17,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 03:03:17,958 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:17,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:17,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2025-01-09 03:03:17,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2025-01-09 03:03:17,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:17,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2025-01-09 03:03:17,999 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2025-01-09 03:03:18,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:18,003 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2025-01-09 03:03:18,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 03:03:18,003 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2025-01-09 03:03:18,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-09 03:03:18,003 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:18,003 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:18,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 03:03:18,004 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:18,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:18,004 INFO L85 PathProgramCache]: Analyzing trace with hash 148076526, now seen corresponding path program 1 times [2025-01-09 03:03:18,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:18,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46956113] [2025-01-09 03:03:18,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:18,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:18,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-09 03:03:18,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-09 03:03:18,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:18,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:18,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:18,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:18,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46956113] [2025-01-09 03:03:18,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46956113] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:03:18,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:03:18,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 03:03:18,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692953893] [2025-01-09 03:03:18,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:03:18,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 03:03:18,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:18,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 03:03:18,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 03:03:18,132 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:18,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:18,140 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2025-01-09 03:03:18,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 03:03:18,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-01-09 03:03:18,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:18,141 INFO L225 Difference]: With dead ends: 14 [2025-01-09 03:03:18,141 INFO L226 Difference]: Without dead ends: 11 [2025-01-09 03:03:18,141 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 03:03:18,142 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:18,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:18,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2025-01-09 03:03:18,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2025-01-09 03:03:18,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:18,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2025-01-09 03:03:18,145 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2025-01-09 03:03:18,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:18,145 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2025-01-09 03:03:18,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:18,145 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2025-01-09 03:03:18,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-01-09 03:03:18,145 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:18,146 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:18,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 03:03:18,146 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:18,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:18,146 INFO L85 PathProgramCache]: Analyzing trace with hash 295342508, now seen corresponding path program 1 times [2025-01-09 03:03:18,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:18,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474956506] [2025-01-09 03:03:18,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:18,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:18,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-09 03:03:18,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 03:03:18,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:18,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:18,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:18,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474956506] [2025-01-09 03:03:18,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474956506] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:18,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046649354] [2025-01-09 03:03:18,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:18,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:18,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:18,228 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 03:03:18,230 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 03:03:18,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-09 03:03:18,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 03:03:18,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:18,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:18,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 03:03:18,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:18,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:18,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046649354] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:18,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:18,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-09 03:03:18,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547448772] [2025-01-09 03:03:18,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:18,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 03:03:18,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:18,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 03:03:18,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:03:18,354 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 03:03:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:18,392 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2025-01-09 03:03:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 03:03:18,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 9 [2025-01-09 03:03:18,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:18,393 INFO L225 Difference]: With dead ends: 22 [2025-01-09 03:03:18,394 INFO L226 Difference]: Without dead ends: 15 [2025-01-09 03:03:18,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:03:18,395 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:18,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:18,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-01-09 03:03:18,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2025-01-09 03:03:18,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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 03:03:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2025-01-09 03:03:18,401 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2025-01-09 03:03:18,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:18,401 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2025-01-09 03:03:18,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 03:03:18,402 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2025-01-09 03:03:18,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-09 03:03:18,402 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:18,402 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:18,414 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 03:03:18,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:18,603 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:18,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:18,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1991238884, now seen corresponding path program 1 times [2025-01-09 03:03:18,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:18,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857970244] [2025-01-09 03:03:18,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:18,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:18,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-09 03:03:18,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-09 03:03:18,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:18,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:18,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:18,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:18,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857970244] [2025-01-09 03:03:18,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857970244] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:18,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855804912] [2025-01-09 03:03:18,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:18,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:18,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:18,684 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 03:03:18,686 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 03:03:18,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-09 03:03:18,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-09 03:03:18,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:18,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:18,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 03:03:18,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:18,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:18,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855804912] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:18,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:18,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-01-09 03:03:18,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259054938] [2025-01-09 03:03:18,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:18,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 03:03:18,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:18,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 03:03:18,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:03:18,794 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:18,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:18,836 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2025-01-09 03:03:18,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:03:18,837 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-01-09 03:03:18,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:18,837 INFO L225 Difference]: With dead ends: 30 [2025-01-09 03:03:18,837 INFO L226 Difference]: Without dead ends: 22 [2025-01-09 03:03:18,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:03:18,838 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:18,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:18,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-01-09 03:03:18,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-01-09 03:03:18,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 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 03:03:18,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2025-01-09 03:03:18,844 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2025-01-09 03:03:18,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:18,844 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2025-01-09 03:03:18,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:18,844 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2025-01-09 03:03:18,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-01-09 03:03:18,845 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:18,845 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:18,851 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 03:03:19,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:19,050 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:19,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:19,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1354039768, now seen corresponding path program 2 times [2025-01-09 03:03:19,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:19,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960323375] [2025-01-09 03:03:19,051 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:19,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:19,064 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-09 03:03:19,102 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 03:03:19,108 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:19,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:19,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:19,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960323375] [2025-01-09 03:03:19,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960323375] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:19,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136875814] [2025-01-09 03:03:19,402 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:19,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:19,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:19,404 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 03:03:19,409 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 03:03:19,435 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-09 03:03:19,444 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 03:03:19,445 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:19,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:19,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 03:03:19,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:19,533 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:19,762 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:19,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136875814] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:19,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:19,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-01-09 03:03:19,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213591926] [2025-01-09 03:03:19,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:19,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 03:03:19,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:19,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 03:03:19,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-01-09 03:03:19,764 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 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 03:03:19,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:19,833 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2025-01-09 03:03:19,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 03:03:19,834 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 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 03:03:19,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:19,834 INFO L225 Difference]: With dead ends: 46 [2025-01-09 03:03:19,834 INFO L226 Difference]: Without dead ends: 38 [2025-01-09 03:03:19,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-01-09 03:03:19,835 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:19,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:03:19,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-01-09 03:03:19,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2025-01-09 03:03:19,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 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 03:03:19,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2025-01-09 03:03:19,840 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 21 [2025-01-09 03:03:19,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:19,840 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2025-01-09 03:03:19,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 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 03:03:19,841 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2025-01-09 03:03:19,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-09 03:03:19,841 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:19,841 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:19,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 03:03:20,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:20,045 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:20,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:20,046 INFO L85 PathProgramCache]: Analyzing trace with hash -917725248, now seen corresponding path program 3 times [2025-01-09 03:03:20,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:20,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731689057] [2025-01-09 03:03:20,046 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:20,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:20,055 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 16 equivalence classes. [2025-01-09 03:03:20,059 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 9 of 37 statements. [2025-01-09 03:03:20,063 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 03:03:20,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-01-09 03:03:20,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:20,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731689057] [2025-01-09 03:03:20,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731689057] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:20,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462690877] [2025-01-09 03:03:20,111 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:20,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:20,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:20,113 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 03:03:20,114 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 03:03:20,141 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 16 equivalence classes. [2025-01-09 03:03:20,150 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 9 of 37 statements. [2025-01-09 03:03:20,151 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 03:03:20,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:20,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 03:03:20,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-01-09 03:03:20,310 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-01-09 03:03:20,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462690877] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:20,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:20,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-01-09 03:03:20,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422283083] [2025-01-09 03:03:20,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:20,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 03:03:20,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:20,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 03:03:20,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2025-01-09 03:03:20,384 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 03:03:20,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:20,405 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2025-01-09 03:03:20,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:03:20,406 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 37 [2025-01-09 03:03:20,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:20,406 INFO L225 Difference]: With dead ends: 47 [2025-01-09 03:03:20,406 INFO L226 Difference]: Without dead ends: 44 [2025-01-09 03:03:20,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2025-01-09 03:03:20,407 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:20,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 23 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:20,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-01-09 03:03:20,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2025-01-09 03:03:20,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 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 03:03:20,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2025-01-09 03:03:20,416 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 37 [2025-01-09 03:03:20,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:20,416 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2025-01-09 03:03:20,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 03:03:20,416 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2025-01-09 03:03:20,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-01-09 03:03:20,417 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:20,418 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 5, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:20,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:20,622 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,SelfDestructingSolverStorable5 [2025-01-09 03:03:20,622 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:20,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:20,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1681398208, now seen corresponding path program 4 times [2025-01-09 03:03:20,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:20,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516988783] [2025-01-09 03:03:20,623 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:20,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:20,630 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 41 statements into 2 equivalence classes. [2025-01-09 03:03:20,638 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-01-09 03:03:20,639 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:20,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-01-09 03:03:20,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:20,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516988783] [2025-01-09 03:03:20,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516988783] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:20,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728877632] [2025-01-09 03:03:20,746 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:20,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:20,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:20,753 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 03:03:20,758 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 03:03:20,789 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 41 statements into 2 equivalence classes. [2025-01-09 03:03:20,808 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-01-09 03:03:20,808 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:20,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:20,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-09 03:03:20,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:03:21,034 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 03:03:21,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728877632] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:21,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:21,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 17, 17] total 38 [2025-01-09 03:03:21,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217151821] [2025-01-09 03:03:21,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:21,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-01-09 03:03:21,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:21,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-01-09 03:03:21,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=883, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 03:03:21,390 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:21,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:21,955 INFO L93 Difference]: Finished difference Result 89 states and 111 transitions. [2025-01-09 03:03:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-01-09 03:03:21,955 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2025-01-09 03:03:21,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:21,956 INFO L225 Difference]: With dead ends: 89 [2025-01-09 03:03:21,956 INFO L226 Difference]: Without dead ends: 77 [2025-01-09 03:03:21,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1603, Invalid=2953, Unknown=0, NotChecked=0, Total=4556 [2025-01-09 03:03:21,959 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:21,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 26 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:03:21,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-01-09 03:03:21,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2025-01-09 03:03:21,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:21,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2025-01-09 03:03:21,968 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 41 [2025-01-09 03:03:21,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:21,968 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2025-01-09 03:03:21,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 38 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:21,968 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2025-01-09 03:03:21,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-01-09 03:03:21,969 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:21,970 INFO L218 NwaCegarLoop]: trace histogram [31, 30, 6, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:21,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 03:03:22,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:22,174 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:22,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:22,175 INFO L85 PathProgramCache]: Analyzing trace with hash 743834570, now seen corresponding path program 5 times [2025-01-09 03:03:22,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:22,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596771348] [2025-01-09 03:03:22,175 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:03:22,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:22,184 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 74 statements into 32 equivalence classes. [2025-01-09 03:03:22,201 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) and asserted 74 of 74 statements. [2025-01-09 03:03:22,201 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2025-01-09 03:03:22,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 982 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 891 trivial. 0 not checked. [2025-01-09 03:03:22,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:22,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596771348] [2025-01-09 03:03:22,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596771348] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:22,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419225155] [2025-01-09 03:03:22,263 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:03:22,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:22,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:22,265 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 03:03:22,267 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 03:03:22,299 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 74 statements into 32 equivalence classes. [2025-01-09 03:03:22,331 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) and asserted 74 of 74 statements. [2025-01-09 03:03:22,332 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2025-01-09 03:03:22,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:22,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-01-09 03:03:22,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 982 backedges. 31 proven. 930 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-09 03:03:22,817 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 982 backedges. 31 proven. 930 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-09 03:03:23,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419225155] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:23,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:23,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 33, 33] total 66 [2025-01-09 03:03:23,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694764336] [2025-01-09 03:03:23,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:23,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2025-01-09 03:03:23,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:23,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2025-01-09 03:03:23,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2025-01-09 03:03:23,974 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 66 states, 66 states have (on average 2.106060606060606) internal successors, (139), 66 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:24,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:24,243 INFO L93 Difference]: Finished difference Result 155 states and 194 transitions. [2025-01-09 03:03:24,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2025-01-09 03:03:24,244 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.106060606060606) internal successors, (139), 66 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2025-01-09 03:03:24,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:24,249 INFO L225 Difference]: With dead ends: 155 [2025-01-09 03:03:24,250 INFO L226 Difference]: Without dead ends: 142 [2025-01-09 03:03:24,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2025-01-09 03:03:24,252 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:24,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 16 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:03:24,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2025-01-09 03:03:24,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2025-01-09 03:03:24,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.0285714285714285) internal successors, (144), 140 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:24,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 144 transitions. [2025-01-09 03:03:24,280 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 144 transitions. Word has length 74 [2025-01-09 03:03:24,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:24,280 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 144 transitions. [2025-01-09 03:03:24,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.106060606060606) internal successors, (139), 66 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:24,281 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 144 transitions. [2025-01-09 03:03:24,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-01-09 03:03:24,285 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:24,285 INFO L218 NwaCegarLoop]: trace histogram [64, 62, 6, 2, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:24,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:24,485 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,SelfDestructingSolverStorable7 [2025-01-09 03:03:24,486 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:24,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:24,490 INFO L85 PathProgramCache]: Analyzing trace with hash 287192623, now seen corresponding path program 6 times [2025-01-09 03:03:24,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:24,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216790333] [2025-01-09 03:03:24,491 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:03:24,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:24,514 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 140 statements into 65 equivalence classes. [2025-01-09 03:03:24,531 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 24 of 140 statements. [2025-01-09 03:03:24,535 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-09 03:03:24,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:24,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4117 backedges. 190 proven. 21 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2025-01-09 03:03:24,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:24,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216790333] [2025-01-09 03:03:24,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216790333] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:24,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391884275] [2025-01-09 03:03:24,698 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:03:24,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:24,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:24,701 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 03:03:24,711 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 03:03:24,777 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 140 statements into 65 equivalence classes. [2025-01-09 03:03:24,821 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 24 of 140 statements. [2025-01-09 03:03:24,821 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-09 03:03:24,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:24,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 03:03:24,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:25,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4117 backedges. 190 proven. 21 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2025-01-09 03:03:25,262 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:25,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4117 backedges. 190 proven. 21 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2025-01-09 03:03:25,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391884275] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:25,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:25,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2025-01-09 03:03:25,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116973933] [2025-01-09 03:03:25,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:25,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 03:03:25,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:25,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 03:03:25,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=274, Unknown=0, NotChecked=0, Total=506 [2025-01-09 03:03:25,454 INFO L87 Difference]: Start difference. First operand 141 states and 144 transitions. Second operand has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 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 03:03:25,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:25,490 INFO L93 Difference]: Finished difference Result 158 states and 171 transitions. [2025-01-09 03:03:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 03:03:25,490 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 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 140 [2025-01-09 03:03:25,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:25,492 INFO L225 Difference]: With dead ends: 158 [2025-01-09 03:03:25,492 INFO L226 Difference]: Without dead ends: 155 [2025-01-09 03:03:25,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=232, Invalid=274, Unknown=0, NotChecked=0, Total=506 [2025-01-09 03:03:25,495 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:25,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:25,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-01-09 03:03:25,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 149. [2025-01-09 03:03:25,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.027027027027027) internal successors, (152), 148 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:25,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 152 transitions. [2025-01-09 03:03:25,505 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 152 transitions. Word has length 140 [2025-01-09 03:03:25,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:25,505 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 152 transitions. [2025-01-09 03:03:25,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 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 03:03:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 152 transitions. [2025-01-09 03:03:25,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-01-09 03:03:25,506 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:25,506 INFO L218 NwaCegarLoop]: trace histogram [64, 62, 14, 2, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:25,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:25,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:25,710 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:25,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:25,711 INFO L85 PathProgramCache]: Analyzing trace with hash -473717713, now seen corresponding path program 7 times [2025-01-09 03:03:25,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:25,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873940895] [2025-01-09 03:03:25,711 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:03:25,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:25,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-01-09 03:03:25,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-01-09 03:03:25,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:25,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4201 backedges. 189 proven. 3906 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2025-01-09 03:03:29,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:29,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873940895] [2025-01-09 03:03:29,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873940895] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:29,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624869202] [2025-01-09 03:03:29,004 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:03:29,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:29,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:29,006 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 03:03:29,007 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 03:03:29,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-01-09 03:03:29,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-01-09 03:03:29,092 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:29,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:29,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 126 conjuncts are in the unsatisfiable core [2025-01-09 03:03:29,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4201 backedges. 189 proven. 3906 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2025-01-09 03:03:29,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4201 backedges. 189 proven. 3906 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2025-01-09 03:03:33,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624869202] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:33,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:33,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 129 [2025-01-09 03:03:33,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655704819] [2025-01-09 03:03:33,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:33,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2025-01-09 03:03:33,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:33,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2025-01-09 03:03:33,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2025-01-09 03:03:33,034 INFO L87 Difference]: Start difference. First operand 149 states and 152 transitions. Second operand has 129 states, 129 states have (on average 2.054263565891473) internal successors, (265), 129 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 03:03:33,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:33,495 INFO L93 Difference]: Finished difference Result 300 states and 370 transitions. [2025-01-09 03:03:33,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2025-01-09 03:03:33,495 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 2.054263565891473) internal successors, (265), 129 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) Word has length 148 [2025-01-09 03:03:33,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:33,497 INFO L225 Difference]: With dead ends: 300 [2025-01-09 03:03:33,497 INFO L226 Difference]: Without dead ends: 277 [2025-01-09 03:03:33,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2025-01-09 03:03:33,501 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:33,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:03:33,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2025-01-09 03:03:33,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2025-01-09 03:03:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.0144927536231885) internal successors, (280), 276 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 280 transitions. [2025-01-09 03:03:33,538 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 280 transitions. Word has length 148 [2025-01-09 03:03:33,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:33,538 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 280 transitions. [2025-01-09 03:03:33,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 2.054263565891473) internal successors, (265), 129 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 03:03:33,539 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 280 transitions. [2025-01-09 03:03:33,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2025-01-09 03:03:33,540 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:33,541 INFO L218 NwaCegarLoop]: trace histogram [128, 126, 14, 2, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:33,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 03:03:33,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:33,742 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:33,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:33,742 INFO L85 PathProgramCache]: Analyzing trace with hash -519140113, now seen corresponding path program 8 times [2025-01-09 03:03:33,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:33,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007821892] [2025-01-09 03:03:33,742 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:33,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:33,759 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 276 statements into 2 equivalence classes. [2025-01-09 03:03:33,876 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 276 of 276 statements. [2025-01-09 03:03:33,877 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:33,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 16489 backedges. 381 proven. 16002 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2025-01-09 03:03:43,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:43,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007821892] [2025-01-09 03:03:43,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007821892] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:43,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193221506] [2025-01-09 03:03:43,139 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:43,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:43,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:43,141 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 03:03:43,143 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 03:03:43,206 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 276 statements into 2 equivalence classes. [2025-01-09 03:03:43,275 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 276 of 276 statements. [2025-01-09 03:03:43,275 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:43,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:43,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 254 conjuncts are in the unsatisfiable core [2025-01-09 03:03:43,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 16489 backedges. 381 proven. 16002 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2025-01-09 03:03:43,584 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:57,350 INFO L134 CoverageAnalysis]: Checked inductivity of 16489 backedges. 381 proven. 16002 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2025-01-09 03:03:57,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193221506] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:57,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:57,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129, 129] total 257 [2025-01-09 03:03:57,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191957783] [2025-01-09 03:03:57,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:57,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 257 states [2025-01-09 03:03:57,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:57,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 257 interpolants. [2025-01-09 03:03:57,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32896, Invalid=32896, Unknown=0, NotChecked=0, Total=65792 [2025-01-09 03:03:57,364 INFO L87 Difference]: Start difference. First operand 277 states and 280 transitions. Second operand has 257 states, 257 states have (on average 2.027237354085603) internal successors, (521), 257 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:58,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:58,332 INFO L93 Difference]: Finished difference Result 556 states and 690 transitions. [2025-01-09 03:03:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2025-01-09 03:03:58,333 INFO L78 Accepts]: Start accepts. Automaton has has 257 states, 257 states have (on average 2.027237354085603) internal successors, (521), 257 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 276 [2025-01-09 03:03:58,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:58,335 INFO L225 Difference]: With dead ends: 556 [2025-01-09 03:03:58,336 INFO L226 Difference]: Without dead ends: 533 [2025-01-09 03:03:58,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=32896, Invalid=32896, Unknown=0, NotChecked=0, Total=65792 [2025-01-09 03:03:58,342 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:58,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:03:58,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2025-01-09 03:03:58,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2025-01-09 03:03:58,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 1.0075187969924813) internal successors, (536), 532 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:58,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 536 transitions. [2025-01-09 03:03:58,377 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 536 transitions. Word has length 276 [2025-01-09 03:03:58,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:58,378 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 536 transitions. [2025-01-09 03:03:58,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 257 states, 257 states have (on average 2.027237354085603) internal successors, (521), 257 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:58,378 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 536 transitions. [2025-01-09 03:03:58,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2025-01-09 03:03:58,383 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:58,383 INFO L218 NwaCegarLoop]: trace histogram [256, 254, 14, 2, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:58,391 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 03:03:58,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:58,584 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:58,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:58,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1170234991, now seen corresponding path program 9 times [2025-01-09 03:03:58,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:58,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768695579] [2025-01-09 03:03:58,585 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:58,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:58,624 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 532 statements into 257 equivalence classes. [2025-01-09 03:03:58,632 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 26 of 532 statements. [2025-01-09 03:03:58,632 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 03:03:58,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:58,654 INFO L134 CoverageAnalysis]: Checked inductivity of 65641 backedges. 1270 proven. 4 refuted. 0 times theorem prover too weak. 64367 trivial. 0 not checked. [2025-01-09 03:03:58,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:58,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768695579] [2025-01-09 03:03:58,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768695579] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:58,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107847111] [2025-01-09 03:03:58,655 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:58,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:58,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:58,657 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 03:03:58,659 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 03:03:58,777 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 532 statements into 257 equivalence classes. [2025-01-09 03:03:58,789 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 26 of 532 statements. [2025-01-09 03:03:58,790 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 03:03:58,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:58,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 03:03:58,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:58,815 INFO L134 CoverageAnalysis]: Checked inductivity of 65641 backedges. 1270 proven. 4 refuted. 0 times theorem prover too weak. 64367 trivial. 0 not checked. [2025-01-09 03:03:58,815 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:58,839 INFO L134 CoverageAnalysis]: Checked inductivity of 65641 backedges. 1270 proven. 4 refuted. 0 times theorem prover too weak. 64367 trivial. 0 not checked. [2025-01-09 03:03:58,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107847111] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:58,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:58,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-01-09 03:03:58,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268033560] [2025-01-09 03:03:58,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:58,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 03:03:58,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:58,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 03:03:58,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:03:58,841 INFO L87 Difference]: Start difference. First operand 533 states and 536 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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 03:03:58,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:58,880 INFO L93 Difference]: Finished difference Result 559 states and 570 transitions. [2025-01-09 03:03:58,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:03:58,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 532 [2025-01-09 03:03:58,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:58,883 INFO L225 Difference]: With dead ends: 559 [2025-01-09 03:03:58,884 INFO L226 Difference]: Without dead ends: 541 [2025-01-09 03:03:58,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1067 GetRequests, 1061 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:03:58,885 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:58,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 13 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:58,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2025-01-09 03:03:58,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2025-01-09 03:03:58,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 540 states have (on average 1.0148148148148148) internal successors, (548), 540 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 548 transitions. [2025-01-09 03:03:58,933 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 548 transitions. Word has length 532 [2025-01-09 03:03:58,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:58,933 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 548 transitions. [2025-01-09 03:03:58,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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 03:03:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 548 transitions. [2025-01-09 03:03:58,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2025-01-09 03:03:58,942 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:58,942 INFO L218 NwaCegarLoop]: trace histogram [260, 254, 14, 6, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:58,947 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 03:03:59,142 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,SelfDestructingSolverStorable11 [2025-01-09 03:03:59,143 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:59,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:59,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1632976387, now seen corresponding path program 10 times [2025-01-09 03:03:59,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:59,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911476104] [2025-01-09 03:03:59,144 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:59,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:59,178 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 540 statements into 2 equivalence classes. [2025-01-09 03:03:59,230 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 540 of 540 statements. [2025-01-09 03:03:59,230 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:59,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:59,783 INFO L134 CoverageAnalysis]: Checked inductivity of 67705 backedges. 2830 proven. 105 refuted. 0 times theorem prover too weak. 64770 trivial. 0 not checked. [2025-01-09 03:03:59,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:59,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911476104] [2025-01-09 03:03:59,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911476104] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:59,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840137108] [2025-01-09 03:03:59,784 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:59,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:59,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:59,787 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 03:03:59,793 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 03:03:59,949 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 540 statements into 2 equivalence classes. [2025-01-09 03:04:00,099 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 540 of 540 statements. [2025-01-09 03:04:00,100 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:04:00,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:04:00,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 1666 conjuncts, 510 conjuncts are in the unsatisfiable core [2025-01-09 03:04:00,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:04:19,789 INFO L134 CoverageAnalysis]: Checked inductivity of 67705 backedges. 2805 proven. 64770 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2025-01-09 03:04:19,789 INFO L312 TraceCheckSpWp]: Computing backward predicates...