./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/in-de51.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/in-de51.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 6b650e50691cb35e1bdf008faa87d25716bf83c58902e8bffb444ab81952ff19 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 03:02:56,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 03:02:56,283 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 03:02:56,288 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 03:02:56,289 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 03:02:56,322 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 03:02:56,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 03:02:56,324 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 03:02:56,324 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 03:02:56,325 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 03:02:56,325 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 03:02:56,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 03:02:56,326 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 03:02:56,326 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 03:02:56,326 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 03:02:56,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 03:02:56,327 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 03:02:56,327 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 03:02:56,327 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 03:02:56,327 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 03:02:56,327 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 03:02:56,327 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 03:02:56,327 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 03:02:56,327 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 03:02:56,327 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 03:02:56,328 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 03:02:56,328 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 03:02:56,328 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 03:02:56,328 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 03:02:56,328 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:02:56,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:02:56,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:02:56,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:02:56,329 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 03:02:56,329 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:02:56,329 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:02:56,329 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:02:56,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:02:56,330 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 03:02:56,330 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 03:02:56,330 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 03:02:56,330 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 03:02:56,330 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 03:02:56,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 03:02:56,330 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 03:02:56,330 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 03:02:56,330 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 03:02:56,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 03:02:56,331 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 -> 6b650e50691cb35e1bdf008faa87d25716bf83c58902e8bffb444ab81952ff19 [2025-01-09 03:02:56,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 03:02:56,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 03:02:56,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 03:02:56,640 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 03:02:56,640 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 03:02:56,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/in-de51.c [2025-01-09 03:02:57,992 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ce1cb49ab/68bb906ea5794a158914e564f855a045/FLAGc57939a35 [2025-01-09 03:02:58,256 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 03:02:58,258 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de51.c [2025-01-09 03:02:58,265 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ce1cb49ab/68bb906ea5794a158914e564f855a045/FLAGc57939a35 [2025-01-09 03:02:58,282 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ce1cb49ab/68bb906ea5794a158914e564f855a045 [2025-01-09 03:02:58,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 03:02:58,286 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 03:02:58,287 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 03:02:58,287 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 03:02:58,291 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 03:02:58,292 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:02:58" (1/1) ... [2025-01-09 03:02:58,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84e890e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:02:58, skipping insertion in model container [2025-01-09 03:02:58,293 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:02:58" (1/1) ... [2025-01-09 03:02:58,307 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 03:02:58,444 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/in-de51.c[368,381] [2025-01-09 03:02:58,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:02:58,471 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 03:02:58,481 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/in-de51.c[368,381] [2025-01-09 03:02:58,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:02:58,500 INFO L204 MainTranslator]: Completed translation [2025-01-09 03:02:58,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:02:58 WrapperNode [2025-01-09 03:02:58,502 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 03:02:58,503 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 03:02:58,503 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 03:02:58,503 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 03:02:58,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:02:58" (1/1) ... [2025-01-09 03:02:58,515 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:02:58" (1/1) ... [2025-01-09 03:02:58,531 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2025-01-09 03:02:58,531 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 03:02:58,532 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 03:02:58,532 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 03:02:58,532 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 03:02:58,540 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:02:58" (1/1) ... [2025-01-09 03:02:58,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:02:58" (1/1) ... [2025-01-09 03:02:58,542 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:02:58" (1/1) ... [2025-01-09 03:02:58,559 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 03:02:58,560 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:02:58" (1/1) ... [2025-01-09 03:02:58,560 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:02:58" (1/1) ... [2025-01-09 03:02:58,566 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:02:58" (1/1) ... [2025-01-09 03:02:58,567 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:02:58" (1/1) ... [2025-01-09 03:02:58,571 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:02:58" (1/1) ... [2025-01-09 03:02:58,572 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:02:58" (1/1) ... [2025-01-09 03:02:58,573 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:02:58" (1/1) ... [2025-01-09 03:02:58,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 03:02:58,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 03:02:58,577 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 03:02:58,577 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 03:02:58,582 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:02:58" (1/1) ... [2025-01-09 03:02:58,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:02:58,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:02:58,613 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 03:02:58,620 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 03:02:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 03:02:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 03:02:58,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 03:02:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 03:02:58,690 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 03:02:58,692 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 03:02:58,828 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-01-09 03:02:58,828 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 03:02:58,838 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 03:02:58,839 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 03:02:58,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:02:58 BoogieIcfgContainer [2025-01-09 03:02:58,840 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 03:02:58,843 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 03:02:58,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 03:02:58,848 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 03:02:58,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 03:02:58" (1/3) ... [2025-01-09 03:02:58,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7c3b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:02:58, skipping insertion in model container [2025-01-09 03:02:58,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:02:58" (2/3) ... [2025-01-09 03:02:58,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7c3b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:02:58, skipping insertion in model container [2025-01-09 03:02:58,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:02:58" (3/3) ... [2025-01-09 03:02:58,852 INFO L128 eAbstractionObserver]: Analyzing ICFG in-de51.c [2025-01-09 03:02:58,868 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 03:02:58,870 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG in-de51.c that has 1 procedures, 14 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2025-01-09 03:02:58,923 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 03:02:58,935 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;@7385110, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 03:02:58,937 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 03:02:58,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:02:58,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-01-09 03:02:58,945 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:02:58,945 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:02:58,946 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:02:58,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:02:58,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2075680301, now seen corresponding path program 1 times [2025-01-09 03:02:58,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:02:58,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582040155] [2025-01-09 03:02:58,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:02:58,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:02:59,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-09 03:02:59,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 03:02:59,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:02:59,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:02:59,441 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 03:02:59,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:02:59,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582040155] [2025-01-09 03:02:59,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582040155] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:02:59,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:02:59,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:02:59,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091582357] [2025-01-09 03:02:59,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:02:59,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:02:59,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:02:59,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:02:59,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:02:59,469 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:02:59,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:02:59,520 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2025-01-09 03:02:59,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 03:02:59,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have 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 03:02:59,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:02:59,528 INFO L225 Difference]: With dead ends: 26 [2025-01-09 03:02:59,528 INFO L226 Difference]: Without dead ends: 15 [2025-01-09 03:02:59,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:02:59,537 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:02:59,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 26 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:02:59,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-01-09 03:02:59,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-01-09 03:02:59,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:02:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2025-01-09 03:02:59,561 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 23 transitions. Word has length 9 [2025-01-09 03:02:59,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:02:59,561 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 23 transitions. [2025-01-09 03:02:59,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:02:59,562 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 23 transitions. [2025-01-09 03:02:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 03:02:59,562 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:02:59,562 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:02:59,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 03:02:59,563 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:02:59,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:02:59,563 INFO L85 PathProgramCache]: Analyzing trace with hash -319785741, now seen corresponding path program 1 times [2025-01-09 03:02:59,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:02:59,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417226558] [2025-01-09 03:02:59,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:02:59,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:02:59,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 03:02:59,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 03:02:59,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:02:59,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:02:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:02:59,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:02:59,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417226558] [2025-01-09 03:02:59,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417226558] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:02:59,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439896377] [2025-01-09 03:02:59,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:02:59,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:02:59,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:02:59,696 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 03:02:59,698 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 03:02:59,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 03:02:59,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 03:02:59,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:02:59,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:02:59,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 03:02:59,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:02:59,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:02:59,802 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:02:59,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:02:59,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439896377] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:02:59,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:02:59,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-01-09 03:02:59,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671323057] [2025-01-09 03:02:59,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:02:59,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 03:02:59,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:02:59,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 03:02:59,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:02:59,868 INFO L87 Difference]: Start difference. First operand 15 states and 23 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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 03:03:00,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:00,082 INFO L93 Difference]: Finished difference Result 64 states and 96 transitions. [2025-01-09 03:03:00,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 03:03:00,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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 10 [2025-01-09 03:03:00,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:00,087 INFO L225 Difference]: With dead ends: 64 [2025-01-09 03:03:00,088 INFO L226 Difference]: Without dead ends: 55 [2025-01-09 03:03:00,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2025-01-09 03:03:00,090 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 77 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:00,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 64 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:03:00,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-01-09 03:03:00,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 26. [2025-01-09 03:03:00,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:00,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 39 transitions. [2025-01-09 03:03:00,105 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 39 transitions. Word has length 10 [2025-01-09 03:03:00,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:00,105 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 39 transitions. [2025-01-09 03:03:00,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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 03:03:00,106 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 39 transitions. [2025-01-09 03:03:00,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 03:03:00,107 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:00,107 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:00,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:00,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:00,312 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:00,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:00,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1874084939, now seen corresponding path program 1 times [2025-01-09 03:03:00,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:00,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655719202] [2025-01-09 03:03:00,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:00,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:00,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 03:03:00,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 03:03:00,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:00,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:00,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:00,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:00,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655719202] [2025-01-09 03:03:00,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655719202] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:03:00,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:03:00,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 03:03:00,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430029697] [2025-01-09 03:03:00,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:03:00,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 03:03:00,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:00,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 03:03:00,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 03:03:00,385 INFO L87 Difference]: Start difference. First operand 26 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:00,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:00,426 INFO L93 Difference]: Finished difference Result 34 states and 50 transitions. [2025-01-09 03:03:00,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:03:00,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-01-09 03:03:00,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:00,427 INFO L225 Difference]: With dead ends: 34 [2025-01-09 03:03:00,427 INFO L226 Difference]: Without dead ends: 26 [2025-01-09 03:03:00,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:03:00,428 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:00,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 21 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:00,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-01-09 03:03:00,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2025-01-09 03:03:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:00,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2025-01-09 03:03:00,439 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 10 [2025-01-09 03:03:00,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:00,439 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2025-01-09 03:03:00,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:00,440 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2025-01-09 03:03:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 03:03:00,440 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:00,440 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:00,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 03:03:00,441 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:00,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:00,441 INFO L85 PathProgramCache]: Analyzing trace with hash 76391413, now seen corresponding path program 1 times [2025-01-09 03:03:00,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:00,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591725311] [2025-01-09 03:03:00,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:00,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:00,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 03:03:00,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 03:03:00,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:00,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:00,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:00,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:00,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591725311] [2025-01-09 03:03:00,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591725311] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:03:00,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:03:00,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 03:03:00,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781238084] [2025-01-09 03:03:00,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:03:00,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 03:03:00,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:00,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 03:03:00,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 03:03:00,472 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:00,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:00,504 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2025-01-09 03:03:00,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 03:03:00,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-01-09 03:03:00,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:00,506 INFO L225 Difference]: With dead ends: 35 [2025-01-09 03:03:00,506 INFO L226 Difference]: Without dead ends: 25 [2025-01-09 03:03:00,507 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 03:03:00,507 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:00,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:00,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-01-09 03:03:00,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2025-01-09 03:03:00,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:00,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2025-01-09 03:03:00,516 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 35 transitions. Word has length 10 [2025-01-09 03:03:00,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:00,517 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 35 transitions. [2025-01-09 03:03:00,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:00,517 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2025-01-09 03:03:00,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-09 03:03:00,517 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:00,518 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:00,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 03:03:00,518 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:00,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:00,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1462452785, now seen corresponding path program 1 times [2025-01-09 03:03:00,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:00,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269192785] [2025-01-09 03:03:00,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:00,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:00,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 03:03:00,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 03:03:00,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:00,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:00,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:00,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269192785] [2025-01-09 03:03:00,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269192785] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:00,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055610718] [2025-01-09 03:03:00,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:00,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:00,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:00,638 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 03:03:00,640 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 03:03:00,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 03:03:00,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 03:03:00,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:00,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:00,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 03:03:00,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:00,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:00,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055610718] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:00,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:00,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 9 [2025-01-09 03:03:00,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808817614] [2025-01-09 03:03:00,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:00,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 03:03:00,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:00,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 03:03:00,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:03:00,777 INFO L87 Difference]: Start difference. First operand 24 states and 35 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:00,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:00,989 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2025-01-09 03:03:00,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 03:03:00,990 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-01-09 03:03:00,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:00,992 INFO L225 Difference]: With dead ends: 50 [2025-01-09 03:03:00,992 INFO L226 Difference]: Without dead ends: 42 [2025-01-09 03:03:00,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2025-01-09 03:03:00,993 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:00,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 46 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:03:00,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-01-09 03:03:01,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2025-01-09 03:03:01,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.46875) internal successors, (47), 32 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:01,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 47 transitions. [2025-01-09 03:03:01,002 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 47 transitions. Word has length 12 [2025-01-09 03:03:01,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:01,002 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 47 transitions. [2025-01-09 03:03:01,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:01,003 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 47 transitions. [2025-01-09 03:03:01,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-09 03:03:01,003 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:01,003 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:01,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:01,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:01,204 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:01,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:01,204 INFO L85 PathProgramCache]: Analyzing trace with hash -780965421, now seen corresponding path program 2 times [2025-01-09 03:03:01,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:01,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797982825] [2025-01-09 03:03:01,205 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:01,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:01,221 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-01-09 03:03:01,233 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-09 03:03:01,233 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:01,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:01,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:01,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:01,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797982825] [2025-01-09 03:03:01,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797982825] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:01,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22913646] [2025-01-09 03:03:01,371 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:01,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:01,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:01,375 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 03:03:01,376 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 03:03:01,402 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-01-09 03:03:01,413 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-09 03:03:01,413 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:01,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:01,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 03:03:01,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:01,445 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:01,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:01,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22913646] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:01,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:01,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-01-09 03:03:01,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215057941] [2025-01-09 03:03:01,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:01,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 03:03:01,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:01,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 03:03:01,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2025-01-09 03:03:01,560 INFO L87 Difference]: Start difference. First operand 33 states and 47 transitions. Second operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:02,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:02,302 INFO L93 Difference]: Finished difference Result 185 states and 279 transitions. [2025-01-09 03:03:02,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-09 03:03:02,302 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-01-09 03:03:02,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:02,303 INFO L225 Difference]: With dead ends: 185 [2025-01-09 03:03:02,303 INFO L226 Difference]: Without dead ends: 175 [2025-01-09 03:03:02,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=690, Unknown=0, NotChecked=0, Total=992 [2025-01-09 03:03:02,308 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 283 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:02,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 209 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:03:02,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-01-09 03:03:02,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 57. [2025-01-09 03:03:02,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4642857142857142) internal successors, (82), 56 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:02,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 82 transitions. [2025-01-09 03:03:02,335 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 82 transitions. Word has length 13 [2025-01-09 03:03:02,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:02,336 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 82 transitions. [2025-01-09 03:03:02,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:02,336 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 82 transitions. [2025-01-09 03:03:02,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-09 03:03:02,336 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:02,336 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:02,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:02,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:02,537 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:02,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:02,538 INFO L85 PathProgramCache]: Analyzing trace with hash 899868527, now seen corresponding path program 1 times [2025-01-09 03:03:02,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:02,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133382180] [2025-01-09 03:03:02,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:02,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:02,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 03:03:02,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 03:03:02,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:02,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:02,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:02,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:02,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133382180] [2025-01-09 03:03:02,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133382180] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:02,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972712300] [2025-01-09 03:03:02,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:02,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:02,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:02,667 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 03:03:02,669 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 03:03:02,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 03:03:02,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 03:03:02,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:02,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:02,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 03:03:02,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:02,751 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:02,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972712300] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:02,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:02,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-01-09 03:03:02,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316494255] [2025-01-09 03:03:02,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:02,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 03:03:02,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:02,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 03:03:02,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:03:02,817 INFO L87 Difference]: Start difference. First operand 57 states and 82 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:02,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:02,868 INFO L93 Difference]: Finished difference Result 63 states and 88 transitions. [2025-01-09 03:03:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:03:02,869 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-01-09 03:03:02,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:02,870 INFO L225 Difference]: With dead ends: 63 [2025-01-09 03:03:02,870 INFO L226 Difference]: Without dead ends: 58 [2025-01-09 03:03:02,870 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-09 03:03:02,871 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:02,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:02,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-01-09 03:03:02,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2025-01-09 03:03:02,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.456140350877193) internal successors, (83), 57 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:02,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 83 transitions. [2025-01-09 03:03:02,885 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 83 transitions. Word has length 14 [2025-01-09 03:03:02,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:02,885 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 83 transitions. [2025-01-09 03:03:02,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:02,886 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 83 transitions. [2025-01-09 03:03:02,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-09 03:03:02,886 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:02,886 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:02,894 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 03:03:03,087 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,SelfDestructingSolverStorable6 [2025-01-09 03:03:03,087 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:03,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:03,087 INFO L85 PathProgramCache]: Analyzing trace with hash -21787117, now seen corresponding path program 2 times [2025-01-09 03:03:03,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:03,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121171126] [2025-01-09 03:03:03,088 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:03,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:03,092 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-09 03:03:03,101 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 03:03:03,101 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:03,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:03,227 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:03,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:03,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121171126] [2025-01-09 03:03:03,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121171126] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:03,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549105146] [2025-01-09 03:03:03,228 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:03,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:03,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:03,230 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 03:03:03,233 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 03:03:03,257 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-09 03:03:03,270 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 03:03:03,270 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:03,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:03,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 03:03:03,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:03:03,335 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:03,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:03:03,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549105146] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:03,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:03,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2025-01-09 03:03:03,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485315675] [2025-01-09 03:03:03,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:03,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 03:03:03,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:03,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 03:03:03,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-01-09 03:03:03,404 INFO L87 Difference]: Start difference. First operand 58 states and 83 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:04,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:04,006 INFO L93 Difference]: Finished difference Result 113 states and 163 transitions. [2025-01-09 03:03:04,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-09 03:03:04,007 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-01-09 03:03:04,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:04,008 INFO L225 Difference]: With dead ends: 113 [2025-01-09 03:03:04,008 INFO L226 Difference]: Without dead ends: 100 [2025-01-09 03:03:04,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=191, Invalid=1069, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 03:03:04,009 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 64 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:04,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 66 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:03:04,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-01-09 03:03:04,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 69. [2025-01-09 03:03:04,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 68 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:04,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 97 transitions. [2025-01-09 03:03:04,027 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 97 transitions. Word has length 15 [2025-01-09 03:03:04,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:04,027 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 97 transitions. [2025-01-09 03:03:04,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:04,028 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 97 transitions. [2025-01-09 03:03:04,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-09 03:03:04,028 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:04,028 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:04,038 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 03:03:04,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:04,229 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:04,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:04,229 INFO L85 PathProgramCache]: Analyzing trace with hash 2065105685, now seen corresponding path program 2 times [2025-01-09 03:03:04,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:04,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797607499] [2025-01-09 03:03:04,229 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:04,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:04,235 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-09 03:03:04,252 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 03:03:04,252 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:04,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:03:04,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:04,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797607499] [2025-01-09 03:03:04,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797607499] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:04,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661648499] [2025-01-09 03:03:04,397 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:04,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:04,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:04,399 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 03:03:04,402 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 03:03:04,423 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-09 03:03:04,433 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 03:03:04,434 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:04,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:04,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 03:03:04,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:03:04,466 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:03:04,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661648499] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:04,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:04,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 9 [2025-01-09 03:03:04,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476365310] [2025-01-09 03:03:04,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:04,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 03:03:04,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:04,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 03:03:04,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:03:04,507 INFO L87 Difference]: Start difference. First operand 69 states and 97 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:04,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:04,573 INFO L93 Difference]: Finished difference Result 84 states and 117 transitions. [2025-01-09 03:03:04,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:03:04,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-01-09 03:03:04,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:04,575 INFO L225 Difference]: With dead ends: 84 [2025-01-09 03:03:04,575 INFO L226 Difference]: Without dead ends: 70 [2025-01-09 03:03:04,576 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:03:04,578 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:04,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 54 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:04,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-01-09 03:03:04,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2025-01-09 03:03:04,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 66 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:04,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 94 transitions. [2025-01-09 03:03:04,601 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 94 transitions. Word has length 15 [2025-01-09 03:03:04,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:04,601 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 94 transitions. [2025-01-09 03:03:04,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:04,601 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 94 transitions. [2025-01-09 03:03:04,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-09 03:03:04,603 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:04,603 INFO L218 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:04,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 03:03:04,804 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,SelfDestructingSolverStorable8 [2025-01-09 03:03:04,805 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:04,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:04,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1344657239, now seen corresponding path program 1 times [2025-01-09 03:03:04,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:04,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085997844] [2025-01-09 03:03:04,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:04,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:04,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 03:03:04,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 03:03:04,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:04,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 03:03:04,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:04,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085997844] [2025-01-09 03:03:04,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085997844] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:04,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138860040] [2025-01-09 03:03:04,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:04,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:04,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:04,949 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 03:03:04,951 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 03:03:04,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 03:03:04,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 03:03:04,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:04,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:04,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 03:03:04,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:05,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 03:03:05,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138860040] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:05,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:05,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 5] total 15 [2025-01-09 03:03:05,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853543698] [2025-01-09 03:03:05,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:05,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 03:03:05,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:05,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 03:03:05,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-01-09 03:03:05,128 INFO L87 Difference]: Start difference. First operand 67 states and 94 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:05,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:05,746 INFO L93 Difference]: Finished difference Result 165 states and 234 transitions. [2025-01-09 03:03:05,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-09 03:03:05,746 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-01-09 03:03:05,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:05,747 INFO L225 Difference]: With dead ends: 165 [2025-01-09 03:03:05,747 INFO L226 Difference]: Without dead ends: 152 [2025-01-09 03:03:05,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2025-01-09 03:03:05,750 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 59 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:05,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 265 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:03:05,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2025-01-09 03:03:05,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 82. [2025-01-09 03:03:05,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.4567901234567902) internal successors, (118), 81 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:05,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 118 transitions. [2025-01-09 03:03:05,782 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 118 transitions. Word has length 17 [2025-01-09 03:03:05,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:05,782 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 118 transitions. [2025-01-09 03:03:05,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:05,783 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 118 transitions. [2025-01-09 03:03:05,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-09 03:03:05,784 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:05,784 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:05,792 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 03:03:05,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:05,985 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:05,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:05,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1346550057, now seen corresponding path program 2 times [2025-01-09 03:03:05,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:05,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204922765] [2025-01-09 03:03:05,987 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:05,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:05,991 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-01-09 03:03:05,997 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 03:03:05,997 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:05,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 03:03:06,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:06,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204922765] [2025-01-09 03:03:06,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204922765] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:06,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484740272] [2025-01-09 03:03:06,115 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:06,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:06,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:06,118 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 03:03:06,120 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 03:03:06,142 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-01-09 03:03:06,153 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 03:03:06,153 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:06,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:06,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 03:03:06,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 03:03:06,178 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:03:06,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484740272] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:06,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:06,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 13 [2025-01-09 03:03:06,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296213358] [2025-01-09 03:03:06,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:06,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 03:03:06,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:06,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 03:03:06,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-01-09 03:03:06,253 INFO L87 Difference]: Start difference. First operand 82 states and 118 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:06,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:06,531 INFO L93 Difference]: Finished difference Result 145 states and 196 transitions. [2025-01-09 03:03:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-09 03:03:06,532 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-01-09 03:03:06,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:06,533 INFO L225 Difference]: With dead ends: 145 [2025-01-09 03:03:06,533 INFO L226 Difference]: Without dead ends: 128 [2025-01-09 03:03:06,534 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2025-01-09 03:03:06,534 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 76 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:06,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 118 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:03:06,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-01-09 03:03:06,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 78. [2025-01-09 03:03:06,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.4415584415584415) internal successors, (111), 77 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:06,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 111 transitions. [2025-01-09 03:03:06,562 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 111 transitions. Word has length 17 [2025-01-09 03:03:06,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:06,564 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 111 transitions. [2025-01-09 03:03:06,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:06,564 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 111 transitions. [2025-01-09 03:03:06,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-09 03:03:06,567 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:06,567 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:06,574 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 03:03:06,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:06,768 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:06,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:06,769 INFO L85 PathProgramCache]: Analyzing trace with hash 474464977, now seen corresponding path program 3 times [2025-01-09 03:03:06,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:06,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752383483] [2025-01-09 03:03:06,769 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:06,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:06,778 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-01-09 03:03:06,784 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 03:03:06,784 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 03:03:06,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 03:03:06,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:06,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752383483] [2025-01-09 03:03:06,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752383483] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:06,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952707695] [2025-01-09 03:03:06,900 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:06,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:06,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:06,902 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 03:03:06,904 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 03:03:06,928 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-01-09 03:03:06,940 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 03:03:06,940 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 03:03:06,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:06,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 03:03:06,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 03:03:06,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 03:03:07,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952707695] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:07,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:07,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 16 [2025-01-09 03:03:07,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183395683] [2025-01-09 03:03:07,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:07,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 03:03:07,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:07,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 03:03:07,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2025-01-09 03:03:07,068 INFO L87 Difference]: Start difference. First operand 78 states and 111 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:07,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:07,363 INFO L93 Difference]: Finished difference Result 145 states and 210 transitions. [2025-01-09 03:03:07,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 03:03:07,363 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-01-09 03:03:07,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:07,364 INFO L225 Difference]: With dead ends: 145 [2025-01-09 03:03:07,364 INFO L226 Difference]: Without dead ends: 140 [2025-01-09 03:03:07,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2025-01-09 03:03:07,365 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:07,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 102 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:03:07,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2025-01-09 03:03:07,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2025-01-09 03:03:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.4537037037037037) internal successors, (157), 108 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:07,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 157 transitions. [2025-01-09 03:03:07,409 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 157 transitions. Word has length 17 [2025-01-09 03:03:07,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:07,410 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 157 transitions. [2025-01-09 03:03:07,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:07,410 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 157 transitions. [2025-01-09 03:03:07,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-09 03:03:07,410 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:07,410 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:07,418 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 03:03:07,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:07,611 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:07,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:07,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1823449909, now seen corresponding path program 4 times [2025-01-09 03:03:07,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:07,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94662916] [2025-01-09 03:03:07,612 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:07,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:07,617 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-01-09 03:03:07,624 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 03:03:07,628 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:07,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:07,705 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 03:03:07,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:07,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94662916] [2025-01-09 03:03:07,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94662916] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:07,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941952535] [2025-01-09 03:03:07,705 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:07,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:07,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:07,708 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 03:03:07,709 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 03:03:07,734 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-01-09 03:03:07,745 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 03:03:07,745 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:07,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:07,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 03:03:07,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:07,772 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 03:03:07,772 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:07,811 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 03:03:07,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941952535] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:07,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:07,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-01-09 03:03:07,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839000763] [2025-01-09 03:03:07,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:07,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:03:07,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:07,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:03:07,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:03:07,813 INFO L87 Difference]: Start difference. First operand 109 states and 157 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 03:03:07,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:07,915 INFO L93 Difference]: Finished difference Result 138 states and 202 transitions. [2025-01-09 03:03:07,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:03:07,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 18 [2025-01-09 03:03:07,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:07,917 INFO L225 Difference]: With dead ends: 138 [2025-01-09 03:03:07,917 INFO L226 Difference]: Without dead ends: 128 [2025-01-09 03:03:07,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-01-09 03:03:07,917 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:07,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 40 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:03:07,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-01-09 03:03:07,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 115. [2025-01-09 03:03:07,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.4298245614035088) internal successors, (163), 114 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 163 transitions. [2025-01-09 03:03:07,949 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 163 transitions. Word has length 18 [2025-01-09 03:03:07,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:07,949 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 163 transitions. [2025-01-09 03:03:07,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 03:03:07,949 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 163 transitions. [2025-01-09 03:03:07,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-09 03:03:07,949 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:07,949 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:07,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-09 03:03:08,150 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,SelfDestructingSolverStorable12 [2025-01-09 03:03:08,150 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:08,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:08,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1443785261, now seen corresponding path program 3 times [2025-01-09 03:03:08,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:08,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097118289] [2025-01-09 03:03:08,151 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:08,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:08,154 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 6 equivalence classes. [2025-01-09 03:03:08,165 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 03:03:08,165 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 03:03:08,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:08,320 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:08,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:08,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097118289] [2025-01-09 03:03:08,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097118289] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:08,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033085127] [2025-01-09 03:03:08,320 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:08,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:08,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:08,323 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 03:03:08,325 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 03:03:08,351 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 6 equivalence classes. [2025-01-09 03:03:08,378 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 03:03:08,378 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 03:03:08,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:08,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-09 03:03:08,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:08,417 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:08,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033085127] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:08,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:08,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2025-01-09 03:03:08,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704382296] [2025-01-09 03:03:08,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:08,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-09 03:03:08,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:08,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-09 03:03:08,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2025-01-09 03:03:08,690 INFO L87 Difference]: Start difference. First operand 115 states and 163 transitions. Second operand has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 03:03:12,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:12,086 INFO L93 Difference]: Finished difference Result 776 states and 1210 transitions. [2025-01-09 03:03:12,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-01-09 03:03:12,087 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-01-09 03:03:12,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:12,090 INFO L225 Difference]: With dead ends: 776 [2025-01-09 03:03:12,090 INFO L226 Difference]: Without dead ends: 722 [2025-01-09 03:03:12,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1363, Invalid=3059, Unknown=0, NotChecked=0, Total=4422 [2025-01-09 03:03:12,094 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 1166 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:12,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 844 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-09 03:03:12,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2025-01-09 03:03:12,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 169. [2025-01-09 03:03:12,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.4226190476190477) internal successors, (239), 168 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:12,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 239 transitions. [2025-01-09 03:03:12,158 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 239 transitions. Word has length 19 [2025-01-09 03:03:12,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:12,159 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 239 transitions. [2025-01-09 03:03:12,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 03:03:12,159 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 239 transitions. [2025-01-09 03:03:12,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-09 03:03:12,159 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:12,159 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:12,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:12,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-09 03:03:12,364 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:12,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:12,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1197214125, now seen corresponding path program 5 times [2025-01-09 03:03:12,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:12,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527306690] [2025-01-09 03:03:12,365 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:03:12,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:12,369 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-09 03:03:12,384 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 03:03:12,384 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:12,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:12,550 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:03:12,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:12,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527306690] [2025-01-09 03:03:12,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527306690] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:12,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002816797] [2025-01-09 03:03:12,551 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:03:12,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:12,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:12,553 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:12,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 03:03:12,586 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-09 03:03:12,598 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 03:03:12,598 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:12,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:12,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 03:03:12,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:12,628 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:03:12,629 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:03:12,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002816797] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:12,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:12,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2025-01-09 03:03:12,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285986406] [2025-01-09 03:03:12,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:12,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 03:03:12,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:12,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 03:03:12,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-01-09 03:03:12,703 INFO L87 Difference]: Start difference. First operand 169 states and 239 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:12,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:12,851 INFO L93 Difference]: Finished difference Result 178 states and 248 transitions. [2025-01-09 03:03:12,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 03:03:12,852 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-01-09 03:03:12,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:12,853 INFO L225 Difference]: With dead ends: 178 [2025-01-09 03:03:12,853 INFO L226 Difference]: Without dead ends: 172 [2025-01-09 03:03:12,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-01-09 03:03:12,854 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:12,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:03:12,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-01-09 03:03:12,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2025-01-09 03:03:12,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.4201183431952662) internal successors, (240), 169 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:12,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 240 transitions. [2025-01-09 03:03:12,928 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 240 transitions. Word has length 19 [2025-01-09 03:03:12,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:12,928 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 240 transitions. [2025-01-09 03:03:12,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:12,928 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 240 transitions. [2025-01-09 03:03:12,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-09 03:03:12,929 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:12,929 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:12,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:13,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:13,129 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:13,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:13,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1126665359, now seen corresponding path program 1 times [2025-01-09 03:03:13,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:13,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329157944] [2025-01-09 03:03:13,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:13,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:13,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 03:03:13,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 03:03:13,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:13,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:13,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:13,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329157944] [2025-01-09 03:03:13,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329157944] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:13,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414894331] [2025-01-09 03:03:13,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:03:13,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:13,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:13,282 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:13,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 03:03:13,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 03:03:13,323 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 03:03:13,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:13,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:13,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 03:03:13,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:13,418 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-09 03:03:13,418 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:13,509 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-09 03:03:13,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414894331] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:13,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:13,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 15 [2025-01-09 03:03:13,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749757482] [2025-01-09 03:03:13,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:13,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 03:03:13,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:13,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 03:03:13,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2025-01-09 03:03:13,511 INFO L87 Difference]: Start difference. First operand 170 states and 240 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:14,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:14,522 INFO L93 Difference]: Finished difference Result 300 states and 429 transitions. [2025-01-09 03:03:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-01-09 03:03:14,523 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-01-09 03:03:14,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:14,524 INFO L225 Difference]: With dead ends: 300 [2025-01-09 03:03:14,525 INFO L226 Difference]: Without dead ends: 284 [2025-01-09 03:03:14,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=376, Invalid=2486, Unknown=0, NotChecked=0, Total=2862 [2025-01-09 03:03:14,526 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 88 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:14,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 114 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:03:14,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2025-01-09 03:03:14,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 216. [2025-01-09 03:03:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.4046511627906977) internal successors, (302), 215 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:14,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 302 transitions. [2025-01-09 03:03:14,581 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 302 transitions. Word has length 20 [2025-01-09 03:03:14,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:14,581 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 302 transitions. [2025-01-09 03:03:14,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:14,581 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 302 transitions. [2025-01-09 03:03:14,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-09 03:03:14,582 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:14,582 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:14,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:14,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:14,786 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:14,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:14,786 INFO L85 PathProgramCache]: Analyzing trace with hash -348518667, now seen corresponding path program 6 times [2025-01-09 03:03:14,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:14,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617069692] [2025-01-09 03:03:14,787 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:03:14,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:14,790 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-01-09 03:03:14,801 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 03:03:14,801 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 03:03:14,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:14,874 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-09 03:03:14,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:14,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617069692] [2025-01-09 03:03:14,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617069692] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:14,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982091496] [2025-01-09 03:03:14,875 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:03:14,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:14,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:14,878 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:14,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 03:03:14,903 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-01-09 03:03:14,918 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 03:03:14,918 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 03:03:14,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:14,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 03:03:14,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:14,940 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-09 03:03:14,941 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-09 03:03:14,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982091496] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:14,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:14,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2025-01-09 03:03:14,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666457395] [2025-01-09 03:03:14,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:14,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:03:14,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:14,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:03:14,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:03:14,974 INFO L87 Difference]: Start difference. First operand 216 states and 302 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:15,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:15,087 INFO L93 Difference]: Finished difference Result 255 states and 357 transitions. [2025-01-09 03:03:15,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:03:15,088 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-01-09 03:03:15,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:15,089 INFO L225 Difference]: With dead ends: 255 [2025-01-09 03:03:15,089 INFO L226 Difference]: Without dead ends: 230 [2025-01-09 03:03:15,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:03:15,090 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:15,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 59 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:03:15,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2025-01-09 03:03:15,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 214. [2025-01-09 03:03:15,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.403755868544601) internal successors, (299), 213 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 299 transitions. [2025-01-09 03:03:15,146 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 299 transitions. Word has length 20 [2025-01-09 03:03:15,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:15,146 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 299 transitions. [2025-01-09 03:03:15,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:15,146 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 299 transitions. [2025-01-09 03:03:15,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-09 03:03:15,147 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:15,147 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:15,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:15,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-09 03:03:15,347 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:15,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:15,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1158648111, now seen corresponding path program 7 times [2025-01-09 03:03:15,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:15,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096225038] [2025-01-09 03:03:15,348 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:03:15,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:15,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 03:03:15,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 03:03:15,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:15,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:15,495 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:03:15,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:15,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096225038] [2025-01-09 03:03:15,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096225038] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:15,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767542896] [2025-01-09 03:03:15,496 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:03:15,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:15,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:15,499 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:15,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 03:03:15,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 03:03:15,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 03:03:15,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:15,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:15,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 03:03:15,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-09 03:03:15,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-09 03:03:15,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767542896] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:15,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:15,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 12 [2025-01-09 03:03:15,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354526058] [2025-01-09 03:03:15,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:15,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 03:03:15,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:15,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 03:03:15,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-01-09 03:03:15,672 INFO L87 Difference]: Start difference. First operand 214 states and 299 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:15,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:15,922 INFO L93 Difference]: Finished difference Result 325 states and 476 transitions. [2025-01-09 03:03:15,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 03:03:15,922 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-01-09 03:03:15,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:15,923 INFO L225 Difference]: With dead ends: 325 [2025-01-09 03:03:15,923 INFO L226 Difference]: Without dead ends: 314 [2025-01-09 03:03:15,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2025-01-09 03:03:15,924 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 35 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:15,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 73 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:03:15,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2025-01-09 03:03:16,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 273. [2025-01-09 03:03:16,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.3970588235294117) internal successors, (380), 272 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:16,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 380 transitions. [2025-01-09 03:03:16,015 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 380 transitions. Word has length 22 [2025-01-09 03:03:16,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:16,015 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 380 transitions. [2025-01-09 03:03:16,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:16,015 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 380 transitions. [2025-01-09 03:03:16,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 03:03:16,016 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:16,016 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:16,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-09 03:03:16,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-09 03:03:16,217 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:16,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:16,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1541815571, now seen corresponding path program 3 times [2025-01-09 03:03:16,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:16,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078523436] [2025-01-09 03:03:16,217 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:16,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:16,220 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 4 equivalence classes. [2025-01-09 03:03:16,228 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 23 statements. [2025-01-09 03:03:16,228 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 03:03:16,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:16,318 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 03:03:16,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:16,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078523436] [2025-01-09 03:03:16,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078523436] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:16,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116013414] [2025-01-09 03:03:16,319 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:16,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:16,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:16,321 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:16,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 03:03:16,353 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 4 equivalence classes. [2025-01-09 03:03:16,367 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 23 statements. [2025-01-09 03:03:16,367 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 03:03:16,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:16,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 03:03:16,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:16,421 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 03:03:16,422 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 03:03:16,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116013414] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:16,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:16,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-01-09 03:03:16,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389048135] [2025-01-09 03:03:16,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:16,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 03:03:16,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:16,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 03:03:16,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2025-01-09 03:03:16,507 INFO L87 Difference]: Start difference. First operand 273 states and 380 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:17,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:17,472 INFO L93 Difference]: Finished difference Result 604 states and 905 transitions. [2025-01-09 03:03:17,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 03:03:17,473 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-01-09 03:03:17,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:17,476 INFO L225 Difference]: With dead ends: 604 [2025-01-09 03:03:17,476 INFO L226 Difference]: Without dead ends: 586 [2025-01-09 03:03:17,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2025-01-09 03:03:17,479 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 75 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:17,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 125 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 03:03:17,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2025-01-09 03:03:17,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 348. [2025-01-09 03:03:17,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 1.440922190201729) internal successors, (500), 347 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:17,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 500 transitions. [2025-01-09 03:03:17,641 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 500 transitions. Word has length 23 [2025-01-09 03:03:17,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:17,641 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 500 transitions. [2025-01-09 03:03:17,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:17,642 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 500 transitions. [2025-01-09 03:03:17,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 03:03:17,642 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:17,643 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:17,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-09 03:03:17,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:17,843 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:17,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:17,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1131849299, now seen corresponding path program 8 times [2025-01-09 03:03:17,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:17,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039124965] [2025-01-09 03:03:17,844 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:17,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:17,847 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-01-09 03:03:17,855 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 03:03:17,855 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:17,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:03:18,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:18,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039124965] [2025-01-09 03:03:18,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039124965] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:18,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134622908] [2025-01-09 03:03:18,056 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:03:18,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:18,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:18,058 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:18,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-09 03:03:18,085 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-01-09 03:03:18,096 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 03:03:18,096 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:03:18,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:18,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 03:03:18,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:18,139 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 03:03:18,139 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-09 03:03:18,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134622908] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:18,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:18,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 8] total 22 [2025-01-09 03:03:18,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596665222] [2025-01-09 03:03:18,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:18,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 03:03:18,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:18,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 03:03:18,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2025-01-09 03:03:18,259 INFO L87 Difference]: Start difference. First operand 348 states and 500 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:18,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:18,860 INFO L93 Difference]: Finished difference Result 533 states and 713 transitions. [2025-01-09 03:03:18,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-09 03:03:18,860 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-01-09 03:03:18,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:18,862 INFO L225 Difference]: With dead ends: 533 [2025-01-09 03:03:18,862 INFO L226 Difference]: Without dead ends: 463 [2025-01-09 03:03:18,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=182, Invalid=1008, Unknown=0, NotChecked=0, Total=1190 [2025-01-09 03:03:18,863 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 74 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:18,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 407 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:03:18,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2025-01-09 03:03:18,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 322. [2025-01-09 03:03:18,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.4299065420560748) internal successors, (459), 321 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:18,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 459 transitions. [2025-01-09 03:03:18,970 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 459 transitions. Word has length 23 [2025-01-09 03:03:18,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:18,971 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 459 transitions. [2025-01-09 03:03:18,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:18,971 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 459 transitions. [2025-01-09 03:03:18,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-09 03:03:18,975 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:18,976 INFO L218 NwaCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:18,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-09 03:03:19,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:19,176 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:19,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:19,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1877904529, now seen corresponding path program 9 times [2025-01-09 03:03:19,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:19,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312647987] [2025-01-09 03:03:19,177 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:19,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:19,180 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 7 equivalence classes. [2025-01-09 03:03:19,195 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 03:03:19,195 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-09 03:03:19,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:19,368 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:03:19,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:19,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312647987] [2025-01-09 03:03:19,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312647987] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:19,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203910830] [2025-01-09 03:03:19,368 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:19,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:19,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:19,371 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:19,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-09 03:03:19,398 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 7 equivalence classes. [2025-01-09 03:03:19,424 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 03:03:19,424 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-09 03:03:19,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:19,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-01-09 03:03:19,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:19,445 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:03:19,445 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:19,730 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:03:19,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203910830] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:19,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:19,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 27 [2025-01-09 03:03:19,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910663637] [2025-01-09 03:03:19,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:19,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-09 03:03:19,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:19,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-09 03:03:19,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2025-01-09 03:03:19,732 INFO L87 Difference]: Start difference. First operand 322 states and 459 transitions. Second operand has 27 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:23,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:23,821 INFO L93 Difference]: Finished difference Result 1336 states and 2013 transitions. [2025-01-09 03:03:23,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-01-09 03:03:23,822 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-01-09 03:03:23,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:23,830 INFO L225 Difference]: With dead ends: 1336 [2025-01-09 03:03:23,830 INFO L226 Difference]: Without dead ends: 1216 [2025-01-09 03:03:23,832 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1433, Invalid=3123, Unknown=0, NotChecked=0, Total=4556 [2025-01-09 03:03:23,833 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 1047 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:23,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 1058 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-09 03:03:23,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2025-01-09 03:03:23,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 372. [2025-01-09 03:03:23,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 1.4366576819407009) internal successors, (533), 371 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:23,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 533 transitions. [2025-01-09 03:03:23,994 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 533 transitions. Word has length 24 [2025-01-09 03:03:23,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:23,994 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 533 transitions. [2025-01-09 03:03:23,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:23,995 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 533 transitions. [2025-01-09 03:03:23,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-09 03:03:23,995 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:23,995 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:24,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:24,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:24,196 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:24,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:24,196 INFO L85 PathProgramCache]: Analyzing trace with hash -739727889, now seen corresponding path program 10 times [2025-01-09 03:03:24,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:24,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784134490] [2025-01-09 03:03:24,196 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:24,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:24,199 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-01-09 03:03:24,209 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 03:03:24,210 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:24,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:03:24,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:24,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784134490] [2025-01-09 03:03:24,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784134490] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:24,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192425510] [2025-01-09 03:03:24,390 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:24,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:24,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:24,393 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:24,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-09 03:03:24,421 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-01-09 03:03:24,478 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 03:03:24,478 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:24,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:24,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-01-09 03:03:24,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:24,517 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:03:24,518 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:03:24,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192425510] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:24,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:24,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2025-01-09 03:03:24,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147521012] [2025-01-09 03:03:24,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:24,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 03:03:24,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:24,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 03:03:24,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-01-09 03:03:24,632 INFO L87 Difference]: Start difference. First operand 372 states and 533 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:24,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:24,861 INFO L93 Difference]: Finished difference Result 378 states and 538 transitions. [2025-01-09 03:03:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 03:03:24,862 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-01-09 03:03:24,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:24,864 INFO L225 Difference]: With dead ends: 378 [2025-01-09 03:03:24,864 INFO L226 Difference]: Without dead ends: 359 [2025-01-09 03:03:24,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-01-09 03:03:24,866 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:24,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:03:24,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2025-01-09 03:03:25,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2025-01-09 03:03:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.4497206703910615) internal successors, (519), 358 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:25,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 519 transitions. [2025-01-09 03:03:25,010 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 519 transitions. Word has length 24 [2025-01-09 03:03:25,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:25,010 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 519 transitions. [2025-01-09 03:03:25,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:25,010 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 519 transitions. [2025-01-09 03:03:25,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-09 03:03:25,011 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:25,011 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:25,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-01-09 03:03:25,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:25,212 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:25,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:25,212 INFO L85 PathProgramCache]: Analyzing trace with hash 412067159, now seen corresponding path program 3 times [2025-01-09 03:03:25,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:25,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037517709] [2025-01-09 03:03:25,212 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:25,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:25,215 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 4 equivalence classes. [2025-01-09 03:03:25,233 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 03:03:25,233 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 03:03:25,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:25,414 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:03:25,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:25,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037517709] [2025-01-09 03:03:25,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037517709] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:25,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741494920] [2025-01-09 03:03:25,415 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:03:25,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:25,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:25,417 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:25,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-09 03:03:25,445 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 4 equivalence classes. [2025-01-09 03:03:25,474 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 03:03:25,475 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 03:03:25,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:25,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-09 03:03:25,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:03:25,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:25,827 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 03:03:25,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741494920] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:25,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:25,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2025-01-09 03:03:25,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140953948] [2025-01-09 03:03:25,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:25,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-09 03:03:25,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:25,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-09 03:03:25,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2025-01-09 03:03:25,829 INFO L87 Difference]: Start difference. First operand 359 states and 519 transitions. Second operand has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:33,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:33,764 INFO L93 Difference]: Finished difference Result 790 states and 1071 transitions. [2025-01-09 03:03:33,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2025-01-09 03:03:33,765 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-01-09 03:03:33,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:33,768 INFO L225 Difference]: With dead ends: 790 [2025-01-09 03:03:33,768 INFO L226 Difference]: Without dead ends: 767 [2025-01-09 03:03:33,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14399 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=6385, Invalid=31835, Unknown=0, NotChecked=0, Total=38220 [2025-01-09 03:03:33,777 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 542 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:33,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 486 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-09 03:03:33,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2025-01-09 03:03:33,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 328. [2025-01-09 03:03:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.4801223241590213) internal successors, (484), 327 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 484 transitions. [2025-01-09 03:03:33,960 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 484 transitions. Word has length 25 [2025-01-09 03:03:33,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:33,960 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 484 transitions. [2025-01-09 03:03:33,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:33,961 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 484 transitions. [2025-01-09 03:03:33,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-09 03:03:33,961 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:33,961 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:33,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-09 03:03:34,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:34,162 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:34,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:34,162 INFO L85 PathProgramCache]: Analyzing trace with hash -47427501, now seen corresponding path program 4 times [2025-01-09 03:03:34,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:34,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864972158] [2025-01-09 03:03:34,163 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:34,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:34,166 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-01-09 03:03:34,173 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 03:03:34,174 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:34,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-09 03:03:34,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:34,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864972158] [2025-01-09 03:03:34,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864972158] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:34,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104074461] [2025-01-09 03:03:34,306 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:34,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:34,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:34,308 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:34,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-09 03:03:34,337 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-01-09 03:03:34,353 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 03:03:34,353 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:34,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:34,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-09 03:03:34,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-09 03:03:34,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 03:03:34,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104074461] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:34,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:34,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 25 [2025-01-09 03:03:34,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811334882] [2025-01-09 03:03:34,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:34,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-09 03:03:34,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:34,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-09 03:03:34,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2025-01-09 03:03:34,630 INFO L87 Difference]: Start difference. First operand 328 states and 484 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:35,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:35,656 INFO L93 Difference]: Finished difference Result 557 states and 748 transitions. [2025-01-09 03:03:35,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-01-09 03:03:35,657 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-01-09 03:03:35,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:35,658 INFO L225 Difference]: With dead ends: 557 [2025-01-09 03:03:35,658 INFO L226 Difference]: Without dead ends: 479 [2025-01-09 03:03:35,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=301, Invalid=1955, Unknown=0, NotChecked=0, Total=2256 [2025-01-09 03:03:35,659 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 129 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:35,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 430 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 03:03:35,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2025-01-09 03:03:35,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 308. [2025-01-09 03:03:35,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.4560260586319218) internal successors, (447), 307 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 447 transitions. [2025-01-09 03:03:35,813 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 447 transitions. Word has length 27 [2025-01-09 03:03:35,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:35,813 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 447 transitions. [2025-01-09 03:03:35,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:35,814 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 447 transitions. [2025-01-09 03:03:35,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-09 03:03:35,814 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:35,814 INFO L218 NwaCegarLoop]: trace histogram [6, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:35,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-01-09 03:03:36,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-01-09 03:03:36,018 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:36,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:36,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1265790675, now seen corresponding path program 11 times [2025-01-09 03:03:36,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:36,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760920653] [2025-01-09 03:03:36,019 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:03:36,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:36,022 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 4 equivalence classes. [2025-01-09 03:03:36,038 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 03:03:36,038 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 03:03:36,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:36,205 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 03:03:36,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:36,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760920653] [2025-01-09 03:03:36,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760920653] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:36,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742881029] [2025-01-09 03:03:36,205 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:03:36,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:36,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:36,208 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:36,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-09 03:03:36,237 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 4 equivalence classes. [2025-01-09 03:03:36,280 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 03:03:36,280 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 03:03:36,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:36,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-09 03:03:36,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-09 03:03:36,386 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-09 03:03:36,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742881029] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:36,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:36,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2025-01-09 03:03:36,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697558194] [2025-01-09 03:03:36,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:36,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 03:03:36,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:36,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 03:03:36,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2025-01-09 03:03:36,582 INFO L87 Difference]: Start difference. First operand 308 states and 447 transitions. Second operand has 29 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 29 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 03:03:37,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:37,243 INFO L93 Difference]: Finished difference Result 477 states and 639 transitions. [2025-01-09 03:03:37,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-01-09 03:03:37,243 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 29 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 27 [2025-01-09 03:03:37,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:37,245 INFO L225 Difference]: With dead ends: 477 [2025-01-09 03:03:37,245 INFO L226 Difference]: Without dead ends: 451 [2025-01-09 03:03:37,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=399, Invalid=1671, Unknown=0, NotChecked=0, Total=2070 [2025-01-09 03:03:37,246 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 92 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:37,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 185 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:03:37,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2025-01-09 03:03:37,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 309. [2025-01-09 03:03:37,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.4253246753246753) internal successors, (439), 308 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:37,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 439 transitions. [2025-01-09 03:03:37,420 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 439 transitions. Word has length 27 [2025-01-09 03:03:37,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:37,420 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 439 transitions. [2025-01-09 03:03:37,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 29 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 03:03:37,421 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 439 transitions. [2025-01-09 03:03:37,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-09 03:03:37,422 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:37,422 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:37,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-01-09 03:03:37,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-01-09 03:03:37,623 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:37,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:37,624 INFO L85 PathProgramCache]: Analyzing trace with hash 958838001, now seen corresponding path program 12 times [2025-01-09 03:03:37,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:37,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072961990] [2025-01-09 03:03:37,624 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:03:37,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:37,629 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 4 equivalence classes. [2025-01-09 03:03:37,638 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 03:03:37,639 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-09 03:03:37,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:37,851 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:03:37,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:37,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072961990] [2025-01-09 03:03:37,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072961990] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:37,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178289744] [2025-01-09 03:03:37,852 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:03:37,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:37,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:37,855 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:37,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-09 03:03:37,881 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 4 equivalence classes. [2025-01-09 03:03:37,909 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 03:03:37,909 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-09 03:03:37,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:37,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 03:03:37,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-09 03:03:38,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-09 03:03:38,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178289744] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:38,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:38,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8, 8] total 22 [2025-01-09 03:03:38,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763152071] [2025-01-09 03:03:38,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:38,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 03:03:38,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:38,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 03:03:38,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2025-01-09 03:03:38,270 INFO L87 Difference]: Start difference. First operand 309 states and 439 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:40,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:40,175 INFO L93 Difference]: Finished difference Result 445 states and 627 transitions. [2025-01-09 03:03:40,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2025-01-09 03:03:40,176 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-01-09 03:03:40,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:40,177 INFO L225 Difference]: With dead ends: 445 [2025-01-09 03:03:40,177 INFO L226 Difference]: Without dead ends: 416 [2025-01-09 03:03:40,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 46 SyntacticMatches, 10 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1976 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=628, Invalid=6344, Unknown=0, NotChecked=0, Total=6972 [2025-01-09 03:03:40,178 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 115 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:40,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 231 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 03:03:40,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2025-01-09 03:03:40,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 332. [2025-01-09 03:03:40,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.4018126888217524) internal successors, (464), 331 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:40,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 464 transitions. [2025-01-09 03:03:40,371 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 464 transitions. Word has length 28 [2025-01-09 03:03:40,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:40,371 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 464 transitions. [2025-01-09 03:03:40,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:40,371 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 464 transitions. [2025-01-09 03:03:40,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-09 03:03:40,372 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:40,372 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:40,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-01-09 03:03:40,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-01-09 03:03:40,572 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:40,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:40,573 INFO L85 PathProgramCache]: Analyzing trace with hash 756214483, now seen corresponding path program 5 times [2025-01-09 03:03:40,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:40,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160082927] [2025-01-09 03:03:40,573 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:03:40,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:40,576 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 29 statements into 4 equivalence classes. [2025-01-09 03:03:40,587 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:03:40,587 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 03:03:40,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-09 03:03:40,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:40,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160082927] [2025-01-09 03:03:40,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160082927] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:40,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141742902] [2025-01-09 03:03:40,715 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 03:03:40,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:40,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:40,717 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:40,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-01-09 03:03:40,749 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 29 statements into 4 equivalence classes. [2025-01-09 03:03:40,799 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:03:40,800 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 03:03:40,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:40,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-01-09 03:03:40,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:41,152 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 03:03:41,152 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-09 03:03:41,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141742902] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:41,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:41,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 22, 15] total 36 [2025-01-09 03:03:41,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269572075] [2025-01-09 03:03:41,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:41,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-09 03:03:41,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:41,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-09 03:03:41,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=984, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 03:03:41,416 INFO L87 Difference]: Start difference. First operand 332 states and 464 transitions. Second operand has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:44,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:44,721 INFO L93 Difference]: Finished difference Result 648 states and 854 transitions. [2025-01-09 03:03:44,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2025-01-09 03:03:44,721 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-01-09 03:03:44,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:44,723 INFO L225 Difference]: With dead ends: 648 [2025-01-09 03:03:44,723 INFO L226 Difference]: Without dead ends: 623 [2025-01-09 03:03:44,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 32 SyntacticMatches, 6 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5236 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2920, Invalid=12580, Unknown=0, NotChecked=0, Total=15500 [2025-01-09 03:03:44,725 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 229 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 2169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:44,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 460 Invalid, 2169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-01-09 03:03:44,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2025-01-09 03:03:44,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 362. [2025-01-09 03:03:44,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 1.3905817174515236) internal successors, (502), 361 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:44,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 502 transitions. [2025-01-09 03:03:44,931 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 502 transitions. Word has length 29 [2025-01-09 03:03:44,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:44,931 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 502 transitions. [2025-01-09 03:03:44,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 36 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:44,931 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 502 transitions. [2025-01-09 03:03:44,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-09 03:03:44,931 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:44,932 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:44,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-01-09 03:03:45,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-01-09 03:03:45,136 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:45,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:45,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1969444141, now seen corresponding path program 13 times [2025-01-09 03:03:45,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:45,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470219600] [2025-01-09 03:03:45,137 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:03:45,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:45,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 03:03:45,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:03:45,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:45,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 03:03:45,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:45,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470219600] [2025-01-09 03:03:45,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470219600] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:45,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112610081] [2025-01-09 03:03:45,626 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:03:45,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:45,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:45,628 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:45,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-01-09 03:03:45,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 03:03:45,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 03:03:45,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:03:45,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:45,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-01-09 03:03:45,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:45,754 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 03:03:45,754 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 03:03:45,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112610081] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:45,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:45,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 23 [2025-01-09 03:03:45,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232413492] [2025-01-09 03:03:45,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:45,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 03:03:45,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:45,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 03:03:45,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2025-01-09 03:03:45,917 INFO L87 Difference]: Start difference. First operand 362 states and 502 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:46,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:46,287 INFO L93 Difference]: Finished difference Result 370 states and 509 transitions. [2025-01-09 03:03:46,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 03:03:46,288 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-01-09 03:03:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:46,289 INFO L225 Difference]: With dead ends: 370 [2025-01-09 03:03:46,289 INFO L226 Difference]: Without dead ends: 347 [2025-01-09 03:03:46,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2025-01-09 03:03:46,290 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:46,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:03:46,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2025-01-09 03:03:46,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2025-01-09 03:03:46,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.4046242774566473) internal successors, (486), 346 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:46,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 486 transitions. [2025-01-09 03:03:46,544 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 486 transitions. Word has length 29 [2025-01-09 03:03:46,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:46,544 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 486 transitions. [2025-01-09 03:03:46,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:46,545 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 486 transitions. [2025-01-09 03:03:46,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-09 03:03:46,545 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:46,545 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:46,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-01-09 03:03:46,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-01-09 03:03:46,746 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:46,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:46,746 INFO L85 PathProgramCache]: Analyzing trace with hash -340749037, now seen corresponding path program 6 times [2025-01-09 03:03:46,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:46,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257716231] [2025-01-09 03:03:46,746 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:03:46,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:46,749 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 5 equivalence classes. [2025-01-09 03:03:46,767 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 03:03:46,767 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-09 03:03:46,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:46,960 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-01-09 03:03:46,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:46,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257716231] [2025-01-09 03:03:46,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257716231] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:46,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013495990] [2025-01-09 03:03:46,960 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 03:03:46,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:46,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:46,962 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:46,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-01-09 03:03:46,989 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 5 equivalence classes. [2025-01-09 03:03:47,032 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 03:03:47,032 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-09 03:03:47,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:47,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-09 03:03:47,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-09 03:03:47,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-09 03:03:47,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013495990] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:47,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:47,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 9] total 24 [2025-01-09 03:03:47,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20416124] [2025-01-09 03:03:47,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:47,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-09 03:03:47,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:47,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-09 03:03:47,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2025-01-09 03:03:47,411 INFO L87 Difference]: Start difference. First operand 347 states and 486 transitions. Second operand has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:51,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:03:51,106 INFO L93 Difference]: Finished difference Result 681 states and 936 transitions. [2025-01-09 03:03:51,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2025-01-09 03:03:51,107 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-01-09 03:03:51,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:03:51,108 INFO L225 Difference]: With dead ends: 681 [2025-01-09 03:03:51,108 INFO L226 Difference]: Without dead ends: 635 [2025-01-09 03:03:51,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 52 SyntacticMatches, 12 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4815 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1193, Invalid=13569, Unknown=0, NotChecked=0, Total=14762 [2025-01-09 03:03:51,110 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 253 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 2138 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 2335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 2138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:03:51,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 501 Invalid, 2335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 2138 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-09 03:03:51,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2025-01-09 03:03:51,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 347. [2025-01-09 03:03:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.393063583815029) internal successors, (482), 346 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:51,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 482 transitions. [2025-01-09 03:03:51,310 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 482 transitions. Word has length 31 [2025-01-09 03:03:51,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:03:51,310 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 482 transitions. [2025-01-09 03:03:51,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:03:51,310 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 482 transitions. [2025-01-09 03:03:51,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-01-09 03:03:51,311 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:03:51,311 INFO L218 NwaCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:03:51,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-01-09 03:03:51,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-01-09 03:03:51,512 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:03:51,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:03:51,512 INFO L85 PathProgramCache]: Analyzing trace with hash -253318925, now seen corresponding path program 4 times [2025-01-09 03:03:51,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:03:51,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258097376] [2025-01-09 03:03:51,512 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:51,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:03:51,515 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-01-09 03:03:51,522 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 03:03:51,522 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:51,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:51,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:03:51,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258097376] [2025-01-09 03:03:51,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258097376] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:03:51,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63509859] [2025-01-09 03:03:51,918 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 03:03:51,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:03:51,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:03:51,920 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:03:51,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-01-09 03:03:51,945 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-01-09 03:03:51,962 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 03:03:51,963 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 03:03:51,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:03:51,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-01-09 03:03:51,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:03:52,004 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:52,004 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:03:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:03:52,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63509859] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:03:52,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:03:52,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2025-01-09 03:03:52,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880119755] [2025-01-09 03:03:52,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:03:52,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-01-09 03:03:52,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:03:52,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-01-09 03:03:52,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=2075, Unknown=0, NotChecked=0, Total=2756 [2025-01-09 03:03:52,821 INFO L87 Difference]: Start difference. First operand 347 states and 482 transitions. Second operand has 53 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 53 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:04:24,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:04:24,618 INFO L93 Difference]: Finished difference Result 3117 states and 4706 transitions. [2025-01-09 03:04:24,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2025-01-09 03:04:24,619 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 53 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-01-09 03:04:24,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:04:24,626 INFO L225 Difference]: With dead ends: 3117 [2025-01-09 03:04:24,626 INFO L226 Difference]: Without dead ends: 2994 [2025-01-09 03:04:24,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5431 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=6259, Invalid=13763, Unknown=0, NotChecked=0, Total=20022 [2025-01-09 03:04:24,628 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 4859 mSDsluCounter, 3345 mSDsCounter, 0 mSdLazyCounter, 2911 mSolverCounterSat, 1626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4859 SdHoareTripleChecker+Valid, 3486 SdHoareTripleChecker+Invalid, 4537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1626 IncrementalHoareTripleChecker+Valid, 2911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2025-01-09 03:04:24,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4859 Valid, 3486 Invalid, 4537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1626 Valid, 2911 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2025-01-09 03:04:24,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2025-01-09 03:04:25,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 518. [2025-01-09 03:04:25,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 1.4448742746615086) internal successors, (747), 517 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:04:25,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 747 transitions. [2025-01-09 03:04:25,130 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 747 transitions. Word has length 32 [2025-01-09 03:04:25,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:04:25,130 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 747 transitions. [2025-01-09 03:04:25,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 53 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:04:25,130 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 747 transitions. [2025-01-09 03:04:25,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-01-09 03:04:25,131 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:04:25,132 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:04:25,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-01-09 03:04:25,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:04:25,332 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:04:25,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:04:25,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1135186639, now seen corresponding path program 7 times [2025-01-09 03:04:25,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:04:25,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508812192] [2025-01-09 03:04:25,333 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 03:04:25,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:04:25,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-09 03:04:25,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 03:04:25,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:04:25,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat