./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/fragtest_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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/loop-invgen/fragtest_simple.i -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 be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 14:49:12,428 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 14:49:12,504 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 14:49:12,511 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 14:49:12,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 14:49:12,536 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 14:49:12,537 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 14:49:12,537 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 14:49:12,537 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 14:49:12,538 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 14:49:12,538 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 14:49:12,538 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 14:49:12,539 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 14:49:12,539 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 14:49:12,539 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 14:49:12,540 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 14:49:12,540 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 14:49:12,540 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 14:49:12,540 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 14:49:12,540 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 14:49:12,540 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 14:49:12,540 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 14:49:12,541 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 14:49:12,541 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 14:49:12,541 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 14:49:12,541 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 14:49:12,541 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 14:49:12,541 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 14:49:12,541 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 14:49:12,541 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 14:49:12,541 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 14:49:12,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 14:49:12,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 14:49:12,542 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 14:49:12,542 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 14:49:12,542 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 14:49:12,543 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 14:49:12,543 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 14:49:12,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 14:49:12,543 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 14:49:12,543 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 14:49:12,543 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 14:49:12,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 14:49:12,543 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 -> be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e [2025-02-05 14:49:12,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 14:49:12,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 14:49:12,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 14:49:12,838 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 14:49:12,839 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 14:49:12,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2025-02-05 14:49:14,188 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e23ae69cb/fb873eb42e9b423b8581529caf1cbfb5/FLAGd04764b89 [2025-02-05 14:49:14,438 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 14:49:14,439 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2025-02-05 14:49:14,445 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e23ae69cb/fb873eb42e9b423b8581529caf1cbfb5/FLAGd04764b89 [2025-02-05 14:49:14,458 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e23ae69cb/fb873eb42e9b423b8581529caf1cbfb5 [2025-02-05 14:49:14,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 14:49:14,461 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 14:49:14,462 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 14:49:14,463 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 14:49:14,466 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 14:49:14,467 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 02:49:14" (1/1) ... [2025-02-05 14:49:14,468 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ae6015d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:49:14, skipping insertion in model container [2025-02-05 14:49:14,468 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 02:49:14" (1/1) ... [2025-02-05 14:49:14,482 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 14:49:14,620 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/loop-invgen/fragtest_simple.i[893,906] [2025-02-05 14:49:14,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 14:49:14,646 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 14:49:14,656 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/loop-invgen/fragtest_simple.i[893,906] [2025-02-05 14:49:14,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 14:49:14,676 INFO L204 MainTranslator]: Completed translation [2025-02-05 14:49:14,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:49:14 WrapperNode [2025-02-05 14:49:14,677 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 14:49:14,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 14:49:14,679 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 14:49:14,679 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 14:49:14,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:49:14" (1/1) ... [2025-02-05 14:49:14,693 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:49:14" (1/1) ... [2025-02-05 14:49:14,707 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2025-02-05 14:49:14,707 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 14:49:14,708 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 14:49:14,709 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 14:49:14,709 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 14:49:14,715 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:49:14" (1/1) ... [2025-02-05 14:49:14,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:49:14" (1/1) ... [2025-02-05 14:49:14,717 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:49:14" (1/1) ... [2025-02-05 14:49:14,730 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]. [2025-02-05 14:49:14,730 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:49:14" (1/1) ... [2025-02-05 14:49:14,730 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:49:14" (1/1) ... [2025-02-05 14:49:14,732 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:49:14" (1/1) ... [2025-02-05 14:49:14,733 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:49:14" (1/1) ... [2025-02-05 14:49:14,733 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:49:14" (1/1) ... [2025-02-05 14:49:14,735 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:49:14" (1/1) ... [2025-02-05 14:49:14,737 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 14:49:14,738 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 14:49:14,738 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 14:49:14,739 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 14:49:14,739 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:49:14" (1/1) ... [2025-02-05 14:49:14,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 14:49:14,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:14,770 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) [2025-02-05 14:49:14,774 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 [2025-02-05 14:49:14,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 14:49:14,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 14:49:14,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 14:49:14,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 14:49:14,851 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 14:49:14,852 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 14:49:14,983 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-02-05 14:49:14,983 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 14:49:14,990 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 14:49:14,991 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 14:49:14,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 02:49:14 BoogieIcfgContainer [2025-02-05 14:49:14,991 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 14:49:14,993 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 14:49:14,994 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 14:49:14,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 14:49:14,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 02:49:14" (1/3) ... [2025-02-05 14:49:14,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49308ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 02:49:14, skipping insertion in model container [2025-02-05 14:49:14,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:49:14" (2/3) ... [2025-02-05 14:49:14,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49308ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 02:49:14, skipping insertion in model container [2025-02-05 14:49:14,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 02:49:14" (3/3) ... [2025-02-05 14:49:15,000 INFO L128 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2025-02-05 14:49:15,013 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 14:49:15,015 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fragtest_simple.i that has 1 procedures, 19 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-05 14:49:15,065 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 14:49:15,075 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;@23f5975f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 14:49:15,075 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 14:49:15,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:15,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-05 14:49:15,086 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:15,087 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:15,087 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:15,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:15,092 INFO L85 PathProgramCache]: Analyzing trace with hash -671675787, now seen corresponding path program 1 times [2025-02-05 14:49:15,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:15,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172857355] [2025-02-05 14:49:15,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:49:15,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:15,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-05 14:49:15,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-05 14:49:15,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:49:15,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:15,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:15,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172857355] [2025-02-05 14:49:15,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172857355] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 14:49:15,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 14:49:15,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 14:49:15,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40671172] [2025-02-05 14:49:15,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 14:49:15,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 14:49:15,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:15,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 14:49:15,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 14:49:15,239 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2025-02-05 14:49:15,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:15,249 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2025-02-05 14:49:15,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 14:49:15,251 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 [2025-02-05 14:49:15,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:15,255 INFO L225 Difference]: With dead ends: 34 [2025-02-05 14:49:15,255 INFO L226 Difference]: Without dead ends: 15 [2025-02-05 14:49:15,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 14:49:15,260 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:15,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:49:15,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-02-05 14:49:15,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-02-05 14:49:15,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:15,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2025-02-05 14:49:15,284 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2025-02-05 14:49:15,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:15,284 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2025-02-05 14:49:15,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2025-02-05 14:49:15,285 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2025-02-05 14:49:15,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-05 14:49:15,286 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:15,286 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:15,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 14:49:15,287 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:15,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:15,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1195474248, now seen corresponding path program 1 times [2025-02-05 14:49:15,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:15,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558084038] [2025-02-05 14:49:15,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:49:15,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:15,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-05 14:49:15,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-05 14:49:15,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:49:15,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:15,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558084038] [2025-02-05 14:49:15,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558084038] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 14:49:15,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 14:49:15,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 14:49:15,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244001227] [2025-02-05 14:49:15,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 14:49:15,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 14:49:15,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:15,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 14:49:15,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 14:49:15,528 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:15,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:15,579 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2025-02-05 14:49:15,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 14:49:15,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-02-05 14:49:15,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:15,581 INFO L225 Difference]: With dead ends: 20 [2025-02-05 14:49:15,581 INFO L226 Difference]: Without dead ends: 18 [2025-02-05 14:49:15,581 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 [2025-02-05 14:49:15,582 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:15,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 32 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:49:15,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-02-05 14:49:15,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2025-02-05 14:49:15,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:15,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2025-02-05 14:49:15,587 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 12 [2025-02-05 14:49:15,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:15,587 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2025-02-05 14:49:15,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:15,587 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2025-02-05 14:49:15,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-05 14:49:15,588 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:15,588 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:15,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 14:49:15,588 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:15,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:15,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1566241978, now seen corresponding path program 1 times [2025-02-05 14:49:15,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:15,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732423563] [2025-02-05 14:49:15,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:49:15,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:15,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-05 14:49:15,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-05 14:49:15,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:49:15,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:15,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:15,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732423563] [2025-02-05 14:49:15,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732423563] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 14:49:15,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 14:49:15,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 14:49:15,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097997007] [2025-02-05 14:49:15,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 14:49:15,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 14:49:15,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:15,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 14:49:15,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 14:49:15,780 INFO L87 Difference]: Start difference. First operand 17 states and 20 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) [2025-02-05 14:49:15,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:15,854 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2025-02-05 14:49:15,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 14:49:15,854 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 16 [2025-02-05 14:49:15,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:15,856 INFO L225 Difference]: With dead ends: 33 [2025-02-05 14:49:15,856 INFO L226 Difference]: Without dead ends: 22 [2025-02-05 14:49:15,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 14:49:15,857 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:15,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 34 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:49:15,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-05 14:49:15,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2025-02-05 14:49:15,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 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) [2025-02-05 14:49:15,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2025-02-05 14:49:15,862 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 16 [2025-02-05 14:49:15,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:15,863 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2025-02-05 14:49:15,863 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) [2025-02-05 14:49:15,863 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2025-02-05 14:49:15,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-05 14:49:15,863 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:15,863 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:15,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 14:49:15,864 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:15,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:15,864 INFO L85 PathProgramCache]: Analyzing trace with hash 822737145, now seen corresponding path program 1 times [2025-02-05 14:49:15,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:15,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431821438] [2025-02-05 14:49:15,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:49:15,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:15,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-05 14:49:15,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-05 14:49:15,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:49:15,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:16,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:16,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431821438] [2025-02-05 14:49:16,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431821438] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:16,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053862968] [2025-02-05 14:49:16,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:49:16,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:16,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:16,021 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) [2025-02-05 14:49:16,024 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 [2025-02-05 14:49:16,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-05 14:49:16,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-05 14:49:16,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:49:16,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:16,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 14:49:16,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:16,204 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:16,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:16,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053862968] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:16,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:16,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-02-05 14:49:16,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517696691] [2025-02-05 14:49:16,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:16,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-05 14:49:16,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:16,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-05 14:49:16,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-02-05 14:49:16,296 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 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) [2025-02-05 14:49:16,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:16,489 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2025-02-05 14:49:16,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-05 14:49:16,490 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-02-05 14:49:16,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:16,491 INFO L225 Difference]: With dead ends: 43 [2025-02-05 14:49:16,492 INFO L226 Difference]: Without dead ends: 32 [2025-02-05 14:49:16,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2025-02-05 14:49:16,493 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:16,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 57 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:49:16,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-02-05 14:49:16,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2025-02-05 14:49:16,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:16,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2025-02-05 14:49:16,501 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 18 [2025-02-05 14:49:16,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:16,501 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2025-02-05 14:49:16,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 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) [2025-02-05 14:49:16,501 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2025-02-05 14:49:16,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 14:49:16,502 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:16,502 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:16,508 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 [2025-02-05 14:49:16,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:16,703 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:16,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:16,703 INFO L85 PathProgramCache]: Analyzing trace with hash -325846150, now seen corresponding path program 2 times [2025-02-05 14:49:16,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:16,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308877051] [2025-02-05 14:49:16,704 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:49:16,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:16,712 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-05 14:49:16,722 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 14:49:16,722 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:49:16,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:16,840 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:16,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:16,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308877051] [2025-02-05 14:49:16,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308877051] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:16,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790771416] [2025-02-05 14:49:16,840 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:49:16,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:16,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:16,843 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) [2025-02-05 14:49:16,845 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 [2025-02-05 14:49:16,874 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-05 14:49:16,888 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 14:49:16,888 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:49:16,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:16,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 14:49:16,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:17,008 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:17,008 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:17,092 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:17,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790771416] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:17,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:17,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-02-05 14:49:17,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878706548] [2025-02-05 14:49:17,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:17,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-05 14:49:17,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:17,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-05 14:49:17,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2025-02-05 14:49:17,096 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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) [2025-02-05 14:49:17,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:17,206 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2025-02-05 14:49:17,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 14:49:17,206 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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 24 [2025-02-05 14:49:17,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:17,207 INFO L225 Difference]: With dead ends: 51 [2025-02-05 14:49:17,208 INFO L226 Difference]: Without dead ends: 36 [2025-02-05 14:49:17,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2025-02-05 14:49:17,209 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:17,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 86 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:49:17,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-02-05 14:49:17,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2025-02-05 14:49:17,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:17,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2025-02-05 14:49:17,218 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 24 [2025-02-05 14:49:17,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:17,218 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2025-02-05 14:49:17,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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) [2025-02-05 14:49:17,218 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2025-02-05 14:49:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-05 14:49:17,218 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:17,218 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:17,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 14:49:17,419 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 [2025-02-05 14:49:17,419 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:17,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:17,420 INFO L85 PathProgramCache]: Analyzing trace with hash 802574521, now seen corresponding path program 3 times [2025-02-05 14:49:17,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:17,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518018765] [2025-02-05 14:49:17,420 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:49:17,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:17,429 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 4 equivalence classes. [2025-02-05 14:49:17,447 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 26 of 26 statements. [2025-02-05 14:49:17,447 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-05 14:49:17,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:17,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:17,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518018765] [2025-02-05 14:49:17,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518018765] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:17,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162263567] [2025-02-05 14:49:17,585 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:49:17,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:17,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:17,587 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) [2025-02-05 14:49:17,590 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 [2025-02-05 14:49:17,616 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 4 equivalence classes. [2025-02-05 14:49:17,631 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 26 of 26 statements. [2025-02-05 14:49:17,631 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-05 14:49:17,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:17,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 14:49:17,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:17,695 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:17,794 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:17,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162263567] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:17,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:17,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2025-02-05 14:49:17,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810169144] [2025-02-05 14:49:17,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:17,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-05 14:49:17,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:17,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-05 14:49:17,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-05 14:49:17,795 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:17,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:17,862 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2025-02-05 14:49:17,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 14:49:17,862 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-02-05 14:49:17,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:17,863 INFO L225 Difference]: With dead ends: 44 [2025-02-05 14:49:17,863 INFO L226 Difference]: Without dead ends: 42 [2025-02-05 14:49:17,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2025-02-05 14:49:17,864 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:17,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 75 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:49:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-02-05 14:49:17,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2025-02-05 14:49:17,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:17,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2025-02-05 14:49:17,869 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 26 [2025-02-05 14:49:17,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:17,869 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2025-02-05 14:49:17,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:17,870 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2025-02-05 14:49:17,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-05 14:49:17,870 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:17,870 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:17,877 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 [2025-02-05 14:49:18,075 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 [2025-02-05 14:49:18,075 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:18,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:18,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1338453315, now seen corresponding path program 4 times [2025-02-05 14:49:18,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:18,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847618723] [2025-02-05 14:49:18,076 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:49:18,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:18,088 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-02-05 14:49:18,102 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 14:49:18,102 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:49:18,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 23 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:18,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:18,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847618723] [2025-02-05 14:49:18,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847618723] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:18,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136411629] [2025-02-05 14:49:18,261 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:49:18,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:18,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:18,263 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) [2025-02-05 14:49:18,266 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 [2025-02-05 14:49:18,296 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-02-05 14:49:18,316 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 14:49:18,317 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:49:18,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:18,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 14:49:18,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:18,476 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:18,585 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:18,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136411629] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:18,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:18,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2025-02-05 14:49:18,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050053732] [2025-02-05 14:49:18,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:18,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-05 14:49:18,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:18,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-05 14:49:18,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2025-02-05 14:49:18,587 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:18,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:18,798 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2025-02-05 14:49:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-05 14:49:18,799 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2025-02-05 14:49:18,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:18,801 INFO L225 Difference]: With dead ends: 92 [2025-02-05 14:49:18,802 INFO L226 Difference]: Without dead ends: 54 [2025-02-05 14:49:18,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=550, Unknown=0, NotChecked=0, Total=756 [2025-02-05 14:49:18,805 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 31 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:18,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 109 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:49:18,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-02-05 14:49:18,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2025-02-05 14:49:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2025-02-05 14:49:18,810 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 34 [2025-02-05 14:49:18,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:18,810 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2025-02-05 14:49:18,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:18,811 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2025-02-05 14:49:18,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-05 14:49:18,811 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:18,811 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:18,820 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 [2025-02-05 14:49:19,011 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 [2025-02-05 14:49:19,012 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:19,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:19,012 INFO L85 PathProgramCache]: Analyzing trace with hash -2142874629, now seen corresponding path program 5 times [2025-02-05 14:49:19,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:19,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349877597] [2025-02-05 14:49:19,012 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:49:19,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:19,023 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 38 statements into 6 equivalence classes. [2025-02-05 14:49:19,043 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 14:49:19,043 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-05 14:49:19,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 30 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:19,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:19,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349877597] [2025-02-05 14:49:19,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349877597] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:19,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864604511] [2025-02-05 14:49:19,268 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:49:19,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:19,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:19,272 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) [2025-02-05 14:49:19,274 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 [2025-02-05 14:49:19,307 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 38 statements into 6 equivalence classes. [2025-02-05 14:49:19,327 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 14:49:19,328 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-05 14:49:19,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:19,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-05 14:49:19,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 30 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:19,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:19,495 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 30 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:19,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864604511] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:19,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:19,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2025-02-05 14:49:19,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223764978] [2025-02-05 14:49:19,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:19,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 14:49:19,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:19,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 14:49:19,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2025-02-05 14:49:19,496 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:19,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:19,582 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2025-02-05 14:49:19,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-05 14:49:19,583 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-02-05 14:49:19,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:19,583 INFO L225 Difference]: With dead ends: 56 [2025-02-05 14:49:19,584 INFO L226 Difference]: Without dead ends: 54 [2025-02-05 14:49:19,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 68 SyntacticMatches, 10 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2025-02-05 14:49:19,585 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:19,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:49:19,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-02-05 14:49:19,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2025-02-05 14:49:19,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 46 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:19,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2025-02-05 14:49:19,595 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 38 [2025-02-05 14:49:19,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:19,595 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2025-02-05 14:49:19,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:19,595 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2025-02-05 14:49:19,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-05 14:49:19,598 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:19,598 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:19,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 14:49:19,798 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 [2025-02-05 14:49:19,799 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:19,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:19,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1751485441, now seen corresponding path program 6 times [2025-02-05 14:49:19,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:19,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003272022] [2025-02-05 14:49:19,800 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:49:19,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:19,807 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 46 statements into 7 equivalence classes. [2025-02-05 14:49:19,823 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 46 of 46 statements. [2025-02-05 14:49:19,823 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-05 14:49:19,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 57 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:20,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:20,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003272022] [2025-02-05 14:49:20,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003272022] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:20,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833493768] [2025-02-05 14:49:20,046 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:49:20,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:20,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:20,049 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) [2025-02-05 14:49:20,051 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 [2025-02-05 14:49:20,086 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 46 statements into 7 equivalence classes. [2025-02-05 14:49:20,111 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 46 of 46 statements. [2025-02-05 14:49:20,111 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-05 14:49:20,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:20,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-05 14:49:20,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 72 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:20,316 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:20,458 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 72 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:20,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833493768] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:20,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:20,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 26 [2025-02-05 14:49:20,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594036742] [2025-02-05 14:49:20,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:20,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-05 14:49:20,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:20,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-05 14:49:20,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2025-02-05 14:49:20,460 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:20,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:20,742 INFO L93 Difference]: Finished difference Result 126 states and 145 transitions. [2025-02-05 14:49:20,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-05 14:49:20,742 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2025-02-05 14:49:20,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:20,743 INFO L225 Difference]: With dead ends: 126 [2025-02-05 14:49:20,743 INFO L226 Difference]: Without dead ends: 72 [2025-02-05 14:49:20,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 72 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2025-02-05 14:49:20,745 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 53 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:20,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 172 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:49:20,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-02-05 14:49:20,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 51. [2025-02-05 14:49:20,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.08) internal successors, (54), 50 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:20,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2025-02-05 14:49:20,751 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 46 [2025-02-05 14:49:20,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:20,752 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2025-02-05 14:49:20,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:20,752 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2025-02-05 14:49:20,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-05 14:49:20,752 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:20,753 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:20,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 14:49:20,953 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 [2025-02-05 14:49:20,954 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:20,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:20,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2044065731, now seen corresponding path program 7 times [2025-02-05 14:49:20,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:20,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979755356] [2025-02-05 14:49:20,955 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:49:20,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:20,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-05 14:49:20,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-05 14:49:20,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:49:20,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:21,205 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 42 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:21,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:21,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979755356] [2025-02-05 14:49:21,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979755356] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:21,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73228430] [2025-02-05 14:49:21,206 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:49:21,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:21,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:21,209 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) [2025-02-05 14:49:21,211 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 [2025-02-05 14:49:21,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-05 14:49:21,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-05 14:49:21,267 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:49:21,267 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:21,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-05 14:49:21,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:21,352 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 56 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:21,352 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:21,500 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 56 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:21,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73228430] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:21,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:21,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2025-02-05 14:49:21,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811309889] [2025-02-05 14:49:21,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:21,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 14:49:21,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:21,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 14:49:21,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2025-02-05 14:49:21,502 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:21,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:21,610 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2025-02-05 14:49:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-05 14:49:21,610 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-02-05 14:49:21,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:21,611 INFO L225 Difference]: With dead ends: 68 [2025-02-05 14:49:21,611 INFO L226 Difference]: Without dead ends: 66 [2025-02-05 14:49:21,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 89 SyntacticMatches, 14 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2025-02-05 14:49:21,612 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:21,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 100 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:49:21,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-02-05 14:49:21,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2025-02-05 14:49:21,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 58 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:21,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2025-02-05 14:49:21,617 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 50 [2025-02-05 14:49:21,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:21,618 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2025-02-05 14:49:21,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:21,618 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2025-02-05 14:49:21,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-05 14:49:21,619 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:21,619 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:21,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 14:49:21,819 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 [2025-02-05 14:49:21,820 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:21,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:21,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1647232577, now seen corresponding path program 8 times [2025-02-05 14:49:21,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:21,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207199807] [2025-02-05 14:49:21,820 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:49:21,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:21,828 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 58 statements into 2 equivalence classes. [2025-02-05 14:49:21,841 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 58 of 58 statements. [2025-02-05 14:49:21,841 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:49:21,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:22,133 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 107 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:22,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:22,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207199807] [2025-02-05 14:49:22,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207199807] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:22,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8612550] [2025-02-05 14:49:22,134 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:49:22,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:22,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:22,136 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) [2025-02-05 14:49:22,137 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 [2025-02-05 14:49:22,171 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 58 statements into 2 equivalence classes. [2025-02-05 14:49:22,203 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 58 of 58 statements. [2025-02-05 14:49:22,203 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:49:22,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:22,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-05 14:49:22,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 126 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 14:49:22,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 126 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 14:49:22,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8612550] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:22,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:22,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 29 [2025-02-05 14:49:22,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343751952] [2025-02-05 14:49:22,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:22,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-02-05 14:49:22,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:22,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-02-05 14:49:22,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2025-02-05 14:49:22,647 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:22,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:22,860 INFO L93 Difference]: Finished difference Result 122 states and 142 transitions. [2025-02-05 14:49:22,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-05 14:49:22,860 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-02-05 14:49:22,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:22,861 INFO L225 Difference]: With dead ends: 122 [2025-02-05 14:49:22,861 INFO L226 Difference]: Without dead ends: 85 [2025-02-05 14:49:22,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 92 SyntacticMatches, 14 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=339, Invalid=993, Unknown=0, NotChecked=0, Total=1332 [2025-02-05 14:49:22,862 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 57 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:22,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 160 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:49:22,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-02-05 14:49:22,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 61. [2025-02-05 14:49:22,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0666666666666667) internal successors, (64), 60 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:22,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2025-02-05 14:49:22,868 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 58 [2025-02-05 14:49:22,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:22,868 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2025-02-05 14:49:22,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:22,869 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2025-02-05 14:49:22,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-05 14:49:22,869 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:22,869 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:22,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-05 14:49:23,074 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 [2025-02-05 14:49:23,074 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:23,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:23,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1678570560, now seen corresponding path program 9 times [2025-02-05 14:49:23,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:23,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8865183] [2025-02-05 14:49:23,075 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:49:23,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:23,082 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 60 statements into 9 equivalence classes. [2025-02-05 14:49:23,107 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 60 of 60 statements. [2025-02-05 14:49:23,108 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-02-05 14:49:23,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 107 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:23,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:23,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8865183] [2025-02-05 14:49:23,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8865183] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:23,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594833942] [2025-02-05 14:49:23,391 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:49:23,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:23,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:23,393 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) [2025-02-05 14:49:23,396 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 [2025-02-05 14:49:23,449 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 60 statements into 9 equivalence classes. [2025-02-05 14:49:23,477 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 60 of 60 statements. [2025-02-05 14:49:23,477 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-02-05 14:49:23,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:23,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-05 14:49:23,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:23,762 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 128 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:23,762 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:23,971 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 128 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:23,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594833942] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:23,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:23,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 31 [2025-02-05 14:49:23,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406014941] [2025-02-05 14:49:23,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:23,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-05 14:49:23,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:23,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-05 14:49:23,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2025-02-05 14:49:23,973 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:24,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:24,149 INFO L93 Difference]: Finished difference Result 129 states and 151 transitions. [2025-02-05 14:49:24,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-05 14:49:24,149 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-02-05 14:49:24,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:24,150 INFO L225 Difference]: With dead ends: 129 [2025-02-05 14:49:24,150 INFO L226 Difference]: Without dead ends: 90 [2025-02-05 14:49:24,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 93 SyntacticMatches, 16 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=405, Invalid=1155, Unknown=0, NotChecked=0, Total=1560 [2025-02-05 14:49:24,151 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 56 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:24,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 152 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:49:24,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-02-05 14:49:24,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 63. [2025-02-05 14:49:24,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.064516129032258) internal successors, (66), 62 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:24,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2025-02-05 14:49:24,157 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 60 [2025-02-05 14:49:24,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:24,157 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2025-02-05 14:49:24,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:24,157 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2025-02-05 14:49:24,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-05 14:49:24,158 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:24,158 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:24,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-05 14:49:24,358 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 [2025-02-05 14:49:24,359 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:24,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:24,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1975250303, now seen corresponding path program 10 times [2025-02-05 14:49:24,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:24,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232233573] [2025-02-05 14:49:24,359 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:49:24,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:24,365 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 62 statements into 2 equivalence classes. [2025-02-05 14:49:24,377 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 62 of 62 statements. [2025-02-05 14:49:24,377 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:49:24,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 72 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:24,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:24,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232233573] [2025-02-05 14:49:24,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232233573] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:24,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281167411] [2025-02-05 14:49:24,687 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:49:24,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:24,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:24,690 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) [2025-02-05 14:49:24,692 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 [2025-02-05 14:49:24,735 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 62 statements into 2 equivalence classes. [2025-02-05 14:49:24,761 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 62 of 62 statements. [2025-02-05 14:49:24,762 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:49:24,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:24,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-05 14:49:24,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 90 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:24,850 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 90 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:25,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281167411] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:25,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:25,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 16 [2025-02-05 14:49:25,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783325469] [2025-02-05 14:49:25,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:25,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-05 14:49:25,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:25,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-05 14:49:25,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2025-02-05 14:49:25,048 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:25,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:25,181 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2025-02-05 14:49:25,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-05 14:49:25,181 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-02-05 14:49:25,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:25,182 INFO L225 Difference]: With dead ends: 80 [2025-02-05 14:49:25,182 INFO L226 Difference]: Without dead ends: 78 [2025-02-05 14:49:25,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 112 SyntacticMatches, 17 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=237, Invalid=413, Unknown=0, NotChecked=0, Total=650 [2025-02-05 14:49:25,183 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:25,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 101 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:49:25,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-02-05 14:49:25,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 71. [2025-02-05 14:49:25,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 70 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2025-02-05 14:49:25,195 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 62 [2025-02-05 14:49:25,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:25,195 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2025-02-05 14:49:25,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:25,195 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2025-02-05 14:49:25,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-02-05 14:49:25,196 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:25,196 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:25,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-05 14:49:25,396 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 [2025-02-05 14:49:25,397 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:25,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:25,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1582282365, now seen corresponding path program 11 times [2025-02-05 14:49:25,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:25,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659739124] [2025-02-05 14:49:25,397 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:49:25,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:25,406 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 70 statements into 11 equivalence classes. [2025-02-05 14:49:25,442 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 70 of 70 statements. [2025-02-05 14:49:25,442 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-05 14:49:25,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 200 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:25,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:25,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659739124] [2025-02-05 14:49:25,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659739124] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:25,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396418519] [2025-02-05 14:49:25,807 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:49:25,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:25,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:25,809 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) [2025-02-05 14:49:25,812 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 [2025-02-05 14:49:25,861 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 70 statements into 11 equivalence classes. [2025-02-05 14:49:25,894 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 70 of 70 statements. [2025-02-05 14:49:25,894 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-05 14:49:25,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:25,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-05 14:49:25,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 200 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:26,262 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 200 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:26,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396418519] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:26,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:26,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 36 [2025-02-05 14:49:26,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366031651] [2025-02-05 14:49:26,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:26,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-05 14:49:26,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:26,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-05 14:49:26,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2025-02-05 14:49:26,506 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 36 states, 36 states have (on average 3.361111111111111) internal successors, (121), 36 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:26,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:26,904 INFO L93 Difference]: Finished difference Result 194 states and 221 transitions. [2025-02-05 14:49:26,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-05 14:49:26,905 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.361111111111111) internal successors, (121), 36 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2025-02-05 14:49:26,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:26,905 INFO L225 Difference]: With dead ends: 194 [2025-02-05 14:49:26,905 INFO L226 Difference]: Without dead ends: 108 [2025-02-05 14:49:26,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 109 SyntacticMatches, 18 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=846, Invalid=2346, Unknown=0, NotChecked=0, Total=3192 [2025-02-05 14:49:26,907 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 104 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:26,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 276 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 14:49:26,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-02-05 14:49:26,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 75. [2025-02-05 14:49:26,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.054054054054054) internal successors, (78), 74 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:26,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2025-02-05 14:49:26,915 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 70 [2025-02-05 14:49:26,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:26,915 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2025-02-05 14:49:26,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.361111111111111) internal successors, (121), 36 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:26,915 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2025-02-05 14:49:26,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-05 14:49:26,916 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:26,916 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:26,924 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 [2025-02-05 14:49:27,116 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 [2025-02-05 14:49:27,117 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:27,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:27,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2089385023, now seen corresponding path program 12 times [2025-02-05 14:49:27,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:27,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038977017] [2025-02-05 14:49:27,117 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:49:27,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:27,126 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 74 statements into 12 equivalence classes. [2025-02-05 14:49:27,160 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 74 of 74 statements. [2025-02-05 14:49:27,160 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-02-05 14:49:27,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 110 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:27,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:27,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038977017] [2025-02-05 14:49:27,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038977017] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:27,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386280151] [2025-02-05 14:49:27,456 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:49:27,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:27,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:27,458 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) [2025-02-05 14:49:27,460 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 [2025-02-05 14:49:27,503 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 74 statements into 12 equivalence classes. [2025-02-05 14:49:27,546 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 74 of 74 statements. [2025-02-05 14:49:27,547 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-02-05 14:49:27,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:27,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-05 14:49:27,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 132 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:27,648 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 132 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:27,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386280151] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:27,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:27,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2025-02-05 14:49:27,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142064932] [2025-02-05 14:49:27,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:27,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-05 14:49:27,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:27,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-05 14:49:27,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=192, Unknown=0, NotChecked=0, Total=306 [2025-02-05 14:49:27,867 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 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) [2025-02-05 14:49:28,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:28,025 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2025-02-05 14:49:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-05 14:49:28,026 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 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) Word has length 74 [2025-02-05 14:49:28,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:28,026 INFO L225 Difference]: With dead ends: 92 [2025-02-05 14:49:28,026 INFO L226 Difference]: Without dead ends: 90 [2025-02-05 14:49:28,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 133 SyntacticMatches, 22 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=318, Invalid=552, Unknown=0, NotChecked=0, Total=870 [2025-02-05 14:49:28,027 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:28,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 130 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:49:28,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-02-05 14:49:28,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 83. [2025-02-05 14:49:28,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.048780487804878) internal successors, (86), 82 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:28,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2025-02-05 14:49:28,039 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 74 [2025-02-05 14:49:28,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:28,040 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2025-02-05 14:49:28,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 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) [2025-02-05 14:49:28,040 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2025-02-05 14:49:28,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-02-05 14:49:28,040 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:28,041 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:28,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-05 14:49:28,241 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 [2025-02-05 14:49:28,242 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:28,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:28,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1474724411, now seen corresponding path program 13 times [2025-02-05 14:49:28,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:28,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238220654] [2025-02-05 14:49:28,243 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:49:28,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:28,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-02-05 14:49:28,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-02-05 14:49:28,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:49:28,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 255 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:28,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:28,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238220654] [2025-02-05 14:49:28,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238220654] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:28,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575064789] [2025-02-05 14:49:28,758 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:49:28,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:28,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:28,761 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) [2025-02-05 14:49:28,763 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 [2025-02-05 14:49:28,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-02-05 14:49:28,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-02-05 14:49:28,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:49:28,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:28,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-05 14:49:28,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 286 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 14:49:29,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:29,559 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 286 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 14:49:29,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575064789] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:29,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:29,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 41 [2025-02-05 14:49:29,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717415598] [2025-02-05 14:49:29,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:29,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-05 14:49:29,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:29,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-05 14:49:29,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1259, Unknown=0, NotChecked=0, Total=1640 [2025-02-05 14:49:29,561 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand has 41 states, 41 states have (on average 3.3658536585365852) internal successors, (138), 41 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:29,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:29,838 INFO L93 Difference]: Finished difference Result 174 states and 202 transitions. [2025-02-05 14:49:29,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-05 14:49:29,838 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.3658536585365852) internal successors, (138), 41 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2025-02-05 14:49:29,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:29,839 INFO L225 Difference]: With dead ends: 174 [2025-02-05 14:49:29,839 INFO L226 Difference]: Without dead ends: 121 [2025-02-05 14:49:29,840 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 128 SyntacticMatches, 22 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=695, Invalid=2061, Unknown=0, NotChecked=0, Total=2756 [2025-02-05 14:49:29,841 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 103 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:29,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 219 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:49:29,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-02-05 14:49:29,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 85. [2025-02-05 14:49:29,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.0476190476190477) internal successors, (88), 84 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:29,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2025-02-05 14:49:29,846 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 82 [2025-02-05 14:49:29,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:29,847 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2025-02-05 14:49:29,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.3658536585365852) internal successors, (138), 41 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:29,847 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2025-02-05 14:49:29,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-02-05 14:49:29,848 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:29,848 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:29,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-05 14:49:30,048 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 [2025-02-05 14:49:30,049 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:30,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:30,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1855256132, now seen corresponding path program 14 times [2025-02-05 14:49:30,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:30,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355863888] [2025-02-05 14:49:30,049 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:49:30,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:30,060 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 84 statements into 2 equivalence classes. [2025-02-05 14:49:30,077 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 84 of 84 statements. [2025-02-05 14:49:30,077 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:49:30,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:30,572 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 255 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:30,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:30,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355863888] [2025-02-05 14:49:30,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355863888] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:30,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668587337] [2025-02-05 14:49:30,576 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:49:30,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:30,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:30,578 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) [2025-02-05 14:49:30,581 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 [2025-02-05 14:49:30,640 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 84 statements into 2 equivalence classes. [2025-02-05 14:49:30,675 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 84 of 84 statements. [2025-02-05 14:49:30,675 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:49:30,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:30,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-05 14:49:30,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:31,041 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 156 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:31,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:31,566 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 156 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:31,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668587337] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:31,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:31,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 16, 16] total 42 [2025-02-05 14:49:31,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786834730] [2025-02-05 14:49:31,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:31,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-02-05 14:49:31,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:31,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-02-05 14:49:31,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=1418, Unknown=0, NotChecked=0, Total=1722 [2025-02-05 14:49:31,569 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 42 states, 42 states have (on average 3.9523809523809526) internal successors, (166), 42 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:32,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:32,602 INFO L93 Difference]: Finished difference Result 186 states and 217 transitions. [2025-02-05 14:49:32,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2025-02-05 14:49:32,603 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.9523809523809526) internal successors, (166), 42 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2025-02-05 14:49:32,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:32,603 INFO L225 Difference]: With dead ends: 186 [2025-02-05 14:49:32,603 INFO L226 Difference]: Without dead ends: 131 [2025-02-05 14:49:32,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 141 SyntacticMatches, 26 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4191 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1841, Invalid=9079, Unknown=0, NotChecked=0, Total=10920 [2025-02-05 14:49:32,606 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 175 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:32,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 180 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 14:49:32,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-02-05 14:49:32,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 91. [2025-02-05 14:49:32,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.0444444444444445) internal successors, (94), 90 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) [2025-02-05 14:49:32,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2025-02-05 14:49:32,612 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 84 [2025-02-05 14:49:32,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:32,612 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2025-02-05 14:49:32,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.9523809523809526) internal successors, (166), 42 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:32,612 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2025-02-05 14:49:32,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-02-05 14:49:32,613 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:32,613 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:32,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-05 14:49:32,813 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 [2025-02-05 14:49:32,814 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:32,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:32,814 INFO L85 PathProgramCache]: Analyzing trace with hash 2091753349, now seen corresponding path program 15 times [2025-02-05 14:49:32,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:32,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370231714] [2025-02-05 14:49:32,814 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:49:32,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:32,823 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 90 statements into 14 equivalence classes. [2025-02-05 14:49:32,848 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) and asserted 90 of 90 statements. [2025-02-05 14:49:32,848 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2025-02-05 14:49:32,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 302 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:33,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:33,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370231714] [2025-02-05 14:49:33,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370231714] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:33,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788620080] [2025-02-05 14:49:33,383 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:49:33,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:33,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:33,385 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) [2025-02-05 14:49:33,387 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 [2025-02-05 14:49:33,438 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 90 statements into 14 equivalence classes. [2025-02-05 14:49:33,480 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) and asserted 90 of 90 statements. [2025-02-05 14:49:33,481 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2025-02-05 14:49:33,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:33,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-05 14:49:33,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 338 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:34,028 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:34,393 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 338 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:34,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788620080] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:34,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:34,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 46 [2025-02-05 14:49:34,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928622766] [2025-02-05 14:49:34,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:34,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-02-05 14:49:34,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:34,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-02-05 14:49:34,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1587, Unknown=0, NotChecked=0, Total=2070 [2025-02-05 14:49:34,395 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 46 states, 46 states have (on average 3.260869565217391) internal successors, (150), 46 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:34,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:34,708 INFO L93 Difference]: Finished difference Result 194 states and 226 transitions. [2025-02-05 14:49:34,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-05 14:49:34,709 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.260869565217391) internal successors, (150), 46 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2025-02-05 14:49:34,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:34,709 INFO L225 Difference]: With dead ends: 194 [2025-02-05 14:49:34,709 INFO L226 Difference]: Without dead ends: 135 [2025-02-05 14:49:34,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 138 SyntacticMatches, 26 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=905, Invalid=2635, Unknown=0, NotChecked=0, Total=3540 [2025-02-05 14:49:34,711 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 94 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:34,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 286 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:49:34,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2025-02-05 14:49:34,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 93. [2025-02-05 14:49:34,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.0434782608695652) internal successors, (96), 92 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:34,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2025-02-05 14:49:34,716 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 90 [2025-02-05 14:49:34,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:34,717 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2025-02-05 14:49:34,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.260869565217391) internal successors, (150), 46 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:34,717 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2025-02-05 14:49:34,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-02-05 14:49:34,718 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:34,718 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:34,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-05 14:49:34,922 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 [2025-02-05 14:49:34,922 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:34,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:34,922 INFO L85 PathProgramCache]: Analyzing trace with hash 975448324, now seen corresponding path program 16 times [2025-02-05 14:49:34,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:34,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537388609] [2025-02-05 14:49:34,923 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:49:34,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:34,930 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 92 statements into 2 equivalence classes. [2025-02-05 14:49:34,944 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 92 of 92 statements. [2025-02-05 14:49:34,944 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:49:34,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 182 proven. 366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:35,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:35,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537388609] [2025-02-05 14:49:35,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537388609] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:35,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596613032] [2025-02-05 14:49:35,357 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:49:35,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:35,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:35,359 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) [2025-02-05 14:49:35,360 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 [2025-02-05 14:49:35,411 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 92 statements into 2 equivalence classes. [2025-02-05 14:49:35,449 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 92 of 92 statements. [2025-02-05 14:49:35,449 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:49:35,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:35,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-05 14:49:35,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 210 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:35,555 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 210 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:35,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596613032] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:35,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:35,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 21 [2025-02-05 14:49:35,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446213537] [2025-02-05 14:49:35,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:35,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-05 14:49:35,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:35,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-05 14:49:35,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=258, Unknown=0, NotChecked=0, Total=420 [2025-02-05 14:49:35,815 INFO L87 Difference]: Start difference. First operand 93 states and 96 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:36,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:36,024 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2025-02-05 14:49:36,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-05 14:49:36,025 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2025-02-05 14:49:36,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:36,026 INFO L225 Difference]: With dead ends: 110 [2025-02-05 14:49:36,026 INFO L226 Difference]: Without dead ends: 108 [2025-02-05 14:49:36,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 168 SyntacticMatches, 26 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=462, Invalid=798, Unknown=0, NotChecked=0, Total=1260 [2025-02-05 14:49:36,027 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:36,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 165 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:49:36,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-02-05 14:49:36,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 101. [2025-02-05 14:49:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.04) internal successors, (104), 100 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:36,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2025-02-05 14:49:36,033 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 92 [2025-02-05 14:49:36,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:36,034 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2025-02-05 14:49:36,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:36,035 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2025-02-05 14:49:36,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-02-05 14:49:36,036 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:36,036 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:36,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-05 14:49:36,236 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 [2025-02-05 14:49:36,237 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:36,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:36,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1262170120, now seen corresponding path program 17 times [2025-02-05 14:49:36,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:36,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973648656] [2025-02-05 14:49:36,237 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:49:36,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:36,247 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 100 statements into 16 equivalence classes. [2025-02-05 14:49:36,284 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) and asserted 100 of 100 statements. [2025-02-05 14:49:36,284 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2025-02-05 14:49:36,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 450 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:36,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:36,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973648656] [2025-02-05 14:49:36,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973648656] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:36,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054074129] [2025-02-05 14:49:36,885 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:49:36,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:36,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:36,887 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) [2025-02-05 14:49:36,890 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 [2025-02-05 14:49:36,950 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 100 statements into 16 equivalence classes. [2025-02-05 14:49:37,006 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) and asserted 100 of 100 statements. [2025-02-05 14:49:37,006 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2025-02-05 14:49:37,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:37,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-05 14:49:37,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:37,613 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 450 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:37,613 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 450 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:38,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054074129] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:38,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:38,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 51 [2025-02-05 14:49:38,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115189250] [2025-02-05 14:49:38,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:38,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-02-05 14:49:38,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:38,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-02-05 14:49:38,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=627, Invalid=1923, Unknown=0, NotChecked=0, Total=2550 [2025-02-05 14:49:38,038 INFO L87 Difference]: Start difference. First operand 101 states and 104 transitions. Second operand has 51 states, 51 states have (on average 3.3529411764705883) internal successors, (171), 51 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:38,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:38,571 INFO L93 Difference]: Finished difference Result 279 states and 316 transitions. [2025-02-05 14:49:38,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-02-05 14:49:38,571 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.3529411764705883) internal successors, (171), 51 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2025-02-05 14:49:38,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:38,572 INFO L225 Difference]: With dead ends: 279 [2025-02-05 14:49:38,572 INFO L226 Difference]: Without dead ends: 153 [2025-02-05 14:49:38,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 154 SyntacticMatches, 28 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2054 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1711, Invalid=4931, Unknown=0, NotChecked=0, Total=6642 [2025-02-05 14:49:38,575 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 197 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:38,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 330 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 14:49:38,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-02-05 14:49:38,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 105. [2025-02-05 14:49:38,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.0384615384615385) internal successors, (108), 104 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:38,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions. [2025-02-05 14:49:38,581 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 100 [2025-02-05 14:49:38,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:38,582 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 108 transitions. [2025-02-05 14:49:38,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.3529411764705883) internal successors, (171), 51 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:38,582 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 108 transitions. [2025-02-05 14:49:38,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-02-05 14:49:38,583 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:38,583 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:38,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-05 14:49:38,783 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 [2025-02-05 14:49:38,784 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:38,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:38,784 INFO L85 PathProgramCache]: Analyzing trace with hash 473983430, now seen corresponding path program 18 times [2025-02-05 14:49:38,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:38,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091879483] [2025-02-05 14:49:38,784 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:49:38,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:38,794 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 104 statements into 17 equivalence classes. [2025-02-05 14:49:38,834 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) and asserted 104 of 104 statements. [2025-02-05 14:49:38,835 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2025-02-05 14:49:38,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 240 proven. 482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:39,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:39,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091879483] [2025-02-05 14:49:39,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091879483] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:39,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139885346] [2025-02-05 14:49:39,240 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:49:39,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:39,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:39,242 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) [2025-02-05 14:49:39,244 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 [2025-02-05 14:49:39,303 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 104 statements into 17 equivalence classes. [2025-02-05 14:49:39,358 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) and asserted 104 of 104 statements. [2025-02-05 14:49:39,358 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2025-02-05 14:49:39,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:39,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-02-05 14:49:39,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 272 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:39,459 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 272 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:39,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139885346] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:39,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:39,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 23 [2025-02-05 14:49:39,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738098121] [2025-02-05 14:49:39,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:39,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-05 14:49:39,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:39,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-05 14:49:39,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=307, Unknown=0, NotChecked=0, Total=506 [2025-02-05 14:49:39,752 INFO L87 Difference]: Start difference. First operand 105 states and 108 transitions. Second operand has 23 states, 23 states have (on average 5.521739130434782) internal successors, (127), 23 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:40,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:40,005 INFO L93 Difference]: Finished difference Result 122 states and 126 transitions. [2025-02-05 14:49:40,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-05 14:49:40,006 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.521739130434782) internal successors, (127), 23 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2025-02-05 14:49:40,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:40,007 INFO L225 Difference]: With dead ends: 122 [2025-02-05 14:49:40,007 INFO L226 Difference]: Without dead ends: 120 [2025-02-05 14:49:40,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 188 SyntacticMatches, 32 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=573, Invalid=987, Unknown=0, NotChecked=0, Total=1560 [2025-02-05 14:49:40,008 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:40,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 224 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:49:40,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-02-05 14:49:40,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 113. [2025-02-05 14:49:40,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 112 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:40,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2025-02-05 14:49:40,034 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 104 [2025-02-05 14:49:40,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:40,035 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2025-02-05 14:49:40,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.521739130434782) internal successors, (127), 23 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:40,035 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2025-02-05 14:49:40,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 14:49:40,044 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:40,044 INFO L218 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:40,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-05 14:49:40,244 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 [2025-02-05 14:49:40,244 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:40,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:40,245 INFO L85 PathProgramCache]: Analyzing trace with hash -923562294, now seen corresponding path program 19 times [2025-02-05 14:49:40,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:40,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478516703] [2025-02-05 14:49:40,245 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:49:40,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:40,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 14:49:40,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 14:49:40,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:49:40,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:40,940 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 530 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:40,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:40,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478516703] [2025-02-05 14:49:40,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478516703] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:40,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406011724] [2025-02-05 14:49:40,940 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:49:40,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:40,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:40,942 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) [2025-02-05 14:49:40,943 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 [2025-02-05 14:49:41,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 14:49:41,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 14:49:41,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:49:41,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:41,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-02-05 14:49:41,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:41,612 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 576 proven. 272 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 14:49:41,612 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:42,048 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 576 proven. 272 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 14:49:42,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406011724] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:42,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:42,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 56 [2025-02-05 14:49:42,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835517798] [2025-02-05 14:49:42,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:42,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-02-05 14:49:42,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:42,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-02-05 14:49:42,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=706, Invalid=2374, Unknown=0, NotChecked=0, Total=3080 [2025-02-05 14:49:42,051 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand has 56 states, 56 states have (on average 3.357142857142857) internal successors, (188), 56 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:42,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:42,403 INFO L93 Difference]: Finished difference Result 239 states and 277 transitions. [2025-02-05 14:49:42,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-02-05 14:49:42,404 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.357142857142857) internal successors, (188), 56 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2025-02-05 14:49:42,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:42,405 INFO L225 Difference]: With dead ends: 239 [2025-02-05 14:49:42,405 INFO L226 Difference]: Without dead ends: 166 [2025-02-05 14:49:42,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 173 SyntacticMatches, 32 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1320, Invalid=3936, Unknown=0, NotChecked=0, Total=5256 [2025-02-05 14:49:42,408 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 157 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:42,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 320 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 14:49:42,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-02-05 14:49:42,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 115. [2025-02-05 14:49:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 114 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) [2025-02-05 14:49:42,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 118 transitions. [2025-02-05 14:49:42,416 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 118 transitions. Word has length 112 [2025-02-05 14:49:42,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:42,416 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 118 transitions. [2025-02-05 14:49:42,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.357142857142857) internal successors, (188), 56 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:42,416 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 118 transitions. [2025-02-05 14:49:42,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-02-05 14:49:42,417 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:42,417 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:42,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-05 14:49:42,617 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 [2025-02-05 14:49:42,618 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:42,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:42,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1014472951, now seen corresponding path program 20 times [2025-02-05 14:49:42,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:42,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636918851] [2025-02-05 14:49:42,618 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:49:42,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:42,632 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 114 statements into 2 equivalence classes. [2025-02-05 14:49:42,646 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 114 of 114 statements. [2025-02-05 14:49:42,646 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:49:42,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:43,385 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 530 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:43,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:43,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636918851] [2025-02-05 14:49:43,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636918851] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:43,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981001628] [2025-02-05 14:49:43,386 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:49:43,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:43,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:43,388 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) [2025-02-05 14:49:43,390 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 [2025-02-05 14:49:43,452 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 114 statements into 2 equivalence classes. [2025-02-05 14:49:43,489 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 114 of 114 statements. [2025-02-05 14:49:43,489 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:49:43,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:43,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-05 14:49:43,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:44,106 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 578 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:44,106 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 578 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:44,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981001628] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:44,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:44,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 58 [2025-02-05 14:49:44,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342624216] [2025-02-05 14:49:44,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:44,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-02-05 14:49:44,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:44,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-02-05 14:49:44,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=2543, Unknown=0, NotChecked=0, Total=3306 [2025-02-05 14:49:44,543 INFO L87 Difference]: Start difference. First operand 115 states and 118 transitions. Second operand has 58 states, 58 states have (on average 3.2758620689655173) internal successors, (190), 58 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:44,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:44,971 INFO L93 Difference]: Finished difference Result 246 states and 286 transitions. [2025-02-05 14:49:44,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-05 14:49:44,971 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.2758620689655173) internal successors, (190), 58 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2025-02-05 14:49:44,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:44,973 INFO L225 Difference]: With dead ends: 246 [2025-02-05 14:49:44,973 INFO L226 Difference]: Without dead ends: 171 [2025-02-05 14:49:44,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 174 SyntacticMatches, 34 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2100 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1449, Invalid=4251, Unknown=0, NotChecked=0, Total=5700 [2025-02-05 14:49:44,974 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 136 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:44,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 403 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 14:49:44,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2025-02-05 14:49:44,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 117. [2025-02-05 14:49:44,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.0344827586206897) internal successors, (120), 116 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:44,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2025-02-05 14:49:44,979 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 114 [2025-02-05 14:49:44,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:44,980 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 120 transitions. [2025-02-05 14:49:44,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.2758620689655173) internal successors, (190), 58 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:44,980 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2025-02-05 14:49:44,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-02-05 14:49:44,981 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:44,981 INFO L218 NwaCegarLoop]: trace histogram [19, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:44,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-05 14:49:45,181 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 [2025-02-05 14:49:45,181 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:45,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:45,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1814698888, now seen corresponding path program 21 times [2025-02-05 14:49:45,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:45,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067488186] [2025-02-05 14:49:45,182 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:49:45,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:45,193 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 116 statements into 19 equivalence classes. [2025-02-05 14:49:45,233 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) and asserted 116 of 116 statements. [2025-02-05 14:49:45,233 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2025-02-05 14:49:45,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 306 proven. 614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:45,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:45,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067488186] [2025-02-05 14:49:45,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067488186] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:45,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64455969] [2025-02-05 14:49:45,734 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:49:45,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:45,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:45,736 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) [2025-02-05 14:49:45,738 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 [2025-02-05 14:49:45,813 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 116 statements into 19 equivalence classes. [2025-02-05 14:49:45,891 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) and asserted 116 of 116 statements. [2025-02-05 14:49:45,892 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2025-02-05 14:49:45,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:45,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-05 14:49:45,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:46,035 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 342 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:46,035 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:46,377 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 342 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:46,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64455969] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:46,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:46,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 25 [2025-02-05 14:49:46,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155154302] [2025-02-05 14:49:46,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:46,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-05 14:49:46,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:46,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-05 14:49:46,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=360, Unknown=0, NotChecked=0, Total=600 [2025-02-05 14:49:46,379 INFO L87 Difference]: Start difference. First operand 117 states and 120 transitions. Second operand has 25 states, 25 states have (on average 5.56) internal successors, (139), 25 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:46,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:46,595 INFO L93 Difference]: Finished difference Result 134 states and 138 transitions. [2025-02-05 14:49:46,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-02-05 14:49:46,595 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.56) internal successors, (139), 25 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2025-02-05 14:49:46,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:46,596 INFO L225 Difference]: With dead ends: 134 [2025-02-05 14:49:46,596 INFO L226 Difference]: Without dead ends: 132 [2025-02-05 14:49:46,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 210 SyntacticMatches, 36 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=696, Invalid=1196, Unknown=0, NotChecked=0, Total=1892 [2025-02-05 14:49:46,596 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:46,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 180 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:49:46,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-02-05 14:49:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 125. [2025-02-05 14:49:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.032258064516129) internal successors, (128), 124 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:46,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 128 transitions. [2025-02-05 14:49:46,603 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 128 transitions. Word has length 116 [2025-02-05 14:49:46,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:46,603 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 128 transitions. [2025-02-05 14:49:46,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.56) internal successors, (139), 25 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:46,604 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 128 transitions. [2025-02-05 14:49:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-02-05 14:49:46,604 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:46,605 INFO L218 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:46,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-05 14:49:46,809 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 [2025-02-05 14:49:46,809 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:46,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:46,809 INFO L85 PathProgramCache]: Analyzing trace with hash -864526708, now seen corresponding path program 22 times [2025-02-05 14:49:46,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:46,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474396397] [2025-02-05 14:49:46,809 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:49:46,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:46,817 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 124 statements into 2 equivalence classes. [2025-02-05 14:49:46,832 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 124 of 124 statements. [2025-02-05 14:49:46,832 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:49:46,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:47,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 668 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:47,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:47,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474396397] [2025-02-05 14:49:47,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474396397] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:47,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717471135] [2025-02-05 14:49:47,711 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:49:47,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:47,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:47,713 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) [2025-02-05 14:49:47,715 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 [2025-02-05 14:49:47,794 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 124 statements into 2 equivalence classes. [2025-02-05 14:49:47,841 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 124 of 124 statements. [2025-02-05 14:49:47,841 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:49:47,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:47,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-02-05 14:49:47,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 722 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:48,619 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:49,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 722 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:49,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717471135] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:49,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:49,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 64 [2025-02-05 14:49:49,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092631339] [2025-02-05 14:49:49,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:49,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-02-05 14:49:49,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:49,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-02-05 14:49:49,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=947, Invalid=3085, Unknown=0, NotChecked=0, Total=4032 [2025-02-05 14:49:49,204 INFO L87 Difference]: Start difference. First operand 125 states and 128 transitions. Second operand has 64 states, 64 states have (on average 3.34375) internal successors, (214), 64 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:49,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:49,949 INFO L93 Difference]: Finished difference Result 347 states and 392 transitions. [2025-02-05 14:49:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-02-05 14:49:49,949 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.34375) internal successors, (214), 64 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2025-02-05 14:49:49,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:49,950 INFO L225 Difference]: With dead ends: 347 [2025-02-05 14:49:49,950 INFO L226 Difference]: Without dead ends: 189 [2025-02-05 14:49:49,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 190 SyntacticMatches, 35 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3275 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2606, Invalid=7900, Unknown=0, NotChecked=0, Total=10506 [2025-02-05 14:49:49,951 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 204 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:49,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 538 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 14:49:49,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-02-05 14:49:49,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 129. [2025-02-05 14:49:49,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.03125) internal successors, (132), 128 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:49,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2025-02-05 14:49:49,958 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 124 [2025-02-05 14:49:49,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:49,959 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2025-02-05 14:49:49,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.34375) internal successors, (214), 64 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:49,959 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2025-02-05 14:49:49,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-02-05 14:49:49,960 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:49,960 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:49,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-05 14:49:50,161 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 [2025-02-05 14:49:50,161 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:50,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:50,161 INFO L85 PathProgramCache]: Analyzing trace with hash -75776438, now seen corresponding path program 23 times [2025-02-05 14:49:50,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:50,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296520448] [2025-02-05 14:49:50,162 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:49:50,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:50,171 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 128 statements into 21 equivalence classes. [2025-02-05 14:49:50,212 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) and asserted 128 of 128 statements. [2025-02-05 14:49:50,212 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2025-02-05 14:49:50,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 420 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:50,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:50,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296520448] [2025-02-05 14:49:50,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296520448] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:50,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634635313] [2025-02-05 14:49:50,792 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:49:50,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:50,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:50,795 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) [2025-02-05 14:49:50,797 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 [2025-02-05 14:49:50,873 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 128 statements into 21 equivalence classes. [2025-02-05 14:49:50,928 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) and asserted 128 of 128 statements. [2025-02-05 14:49:50,928 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2025-02-05 14:49:50,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:50,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-05 14:49:50,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:51,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 420 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:51,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:51,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 420 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:51,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634635313] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:51,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:51,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 26 [2025-02-05 14:49:51,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938717191] [2025-02-05 14:49:51,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:51,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-05 14:49:51,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:51,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-05 14:49:51,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2025-02-05 14:49:51,466 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand has 26 states, 26 states have (on average 5.538461538461538) internal successors, (144), 26 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:51,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:51,742 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2025-02-05 14:49:51,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-02-05 14:49:51,742 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.538461538461538) internal successors, (144), 26 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2025-02-05 14:49:51,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:51,743 INFO L225 Difference]: With dead ends: 146 [2025-02-05 14:49:51,743 INFO L226 Difference]: Without dead ends: 144 [2025-02-05 14:49:51,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 233 SyntacticMatches, 40 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=827, Invalid=1335, Unknown=0, NotChecked=0, Total=2162 [2025-02-05 14:49:51,744 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 13 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:51,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 226 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:49:51,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-02-05 14:49:51,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 137. [2025-02-05 14:49:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.0294117647058822) internal successors, (140), 136 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 140 transitions. [2025-02-05 14:49:51,752 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 140 transitions. Word has length 128 [2025-02-05 14:49:51,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:51,753 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 140 transitions. [2025-02-05 14:49:51,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.538461538461538) internal successors, (144), 26 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:51,753 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 140 transitions. [2025-02-05 14:49:51,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-02-05 14:49:51,754 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:51,754 INFO L218 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:51,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-05 14:49:51,954 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 [2025-02-05 14:49:51,955 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:51,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:51,955 INFO L85 PathProgramCache]: Analyzing trace with hash 618929998, now seen corresponding path program 24 times [2025-02-05 14:49:51,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:51,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273035872] [2025-02-05 14:49:51,956 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:49:51,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:51,964 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 136 statements into 22 equivalence classes. [2025-02-05 14:49:52,005 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) and asserted 136 of 136 statements. [2025-02-05 14:49:52,005 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2025-02-05 14:49:52,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:52,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 822 proven. 480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:52,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:52,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273035872] [2025-02-05 14:49:52,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273035872] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:52,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060980680] [2025-02-05 14:49:52,920 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:49:52,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:52,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:52,923 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) [2025-02-05 14:49:52,924 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 [2025-02-05 14:49:53,012 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 136 statements into 22 equivalence classes. [2025-02-05 14:49:53,086 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) and asserted 136 of 136 statements. [2025-02-05 14:49:53,086 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2025-02-05 14:49:53,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:53,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-02-05 14:49:53,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:53,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 882 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:53,902 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 882 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:54,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060980680] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:54,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:54,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 71 [2025-02-05 14:49:54,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181828020] [2025-02-05 14:49:54,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:54,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-02-05 14:49:54,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:54,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-02-05 14:49:54,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1156, Invalid=3814, Unknown=0, NotChecked=0, Total=4970 [2025-02-05 14:49:54,502 INFO L87 Difference]: Start difference. First operand 137 states and 140 transitions. Second operand has 71 states, 71 states have (on average 3.3380281690140845) internal successors, (237), 71 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:55,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:55,336 INFO L93 Difference]: Finished difference Result 381 states and 430 transitions. [2025-02-05 14:49:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2025-02-05 14:49:55,336 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.3380281690140845) internal successors, (237), 71 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2025-02-05 14:49:55,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:55,337 INFO L225 Difference]: With dead ends: 381 [2025-02-05 14:49:55,337 INFO L226 Difference]: Without dead ends: 207 [2025-02-05 14:49:55,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 207 SyntacticMatches, 39 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4226 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3149, Invalid=9507, Unknown=0, NotChecked=0, Total=12656 [2025-02-05 14:49:55,339 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 271 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:55,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 538 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 14:49:55,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2025-02-05 14:49:55,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 141. [2025-02-05 14:49:55,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.0285714285714285) internal successors, (144), 140 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 144 transitions. [2025-02-05 14:49:55,347 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 144 transitions. Word has length 136 [2025-02-05 14:49:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:55,347 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 144 transitions. [2025-02-05 14:49:55,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.3380281690140845) internal successors, (237), 71 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:55,348 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 144 transitions. [2025-02-05 14:49:55,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-02-05 14:49:55,348 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:55,349 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:55,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-05 14:49:55,553 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 [2025-02-05 14:49:55,553 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:55,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:55,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1945120244, now seen corresponding path program 25 times [2025-02-05 14:49:55,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:55,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656227227] [2025-02-05 14:49:55,553 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:49:55,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:55,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-02-05 14:49:55,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-02-05 14:49:55,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:49:55,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 462 proven. 926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:56,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:56,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656227227] [2025-02-05 14:49:56,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656227227] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:56,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423674891] [2025-02-05 14:49:56,203 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:49:56,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:56,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:56,205 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) [2025-02-05 14:49:56,208 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 [2025-02-05 14:49:56,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-02-05 14:49:56,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-02-05 14:49:56,333 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:49:56,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:56,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-02-05 14:49:56,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 506 proven. 882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:56,469 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:49:56,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 506 proven. 882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:56,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423674891] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:49:56,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:49:56,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 29 [2025-02-05 14:49:56,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818866659] [2025-02-05 14:49:56,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:49:56,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-02-05 14:49:56,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:49:56,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-02-05 14:49:56,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=478, Unknown=0, NotChecked=0, Total=812 [2025-02-05 14:49:56,938 INFO L87 Difference]: Start difference. First operand 141 states and 144 transitions. Second operand has 29 states, 29 states have (on average 5.620689655172414) internal successors, (163), 29 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) [2025-02-05 14:49:57,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:49:57,194 INFO L93 Difference]: Finished difference Result 158 states and 162 transitions. [2025-02-05 14:49:57,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-02-05 14:49:57,194 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.620689655172414) internal successors, (163), 29 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) Word has length 140 [2025-02-05 14:49:57,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:49:57,195 INFO L225 Difference]: With dead ends: 158 [2025-02-05 14:49:57,195 INFO L226 Difference]: Without dead ends: 156 [2025-02-05 14:49:57,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 254 SyntacticMatches, 44 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=978, Invalid=1674, Unknown=0, NotChecked=0, Total=2652 [2025-02-05 14:49:57,196 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 11 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:49:57,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 271 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:49:57,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-02-05 14:49:57,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 149. [2025-02-05 14:49:57,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.027027027027027) internal successors, (152), 148 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:49:57,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 152 transitions. [2025-02-05 14:49:57,204 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 152 transitions. Word has length 140 [2025-02-05 14:49:57,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:49:57,205 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 152 transitions. [2025-02-05 14:49:57,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.620689655172414) internal successors, (163), 29 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) [2025-02-05 14:49:57,205 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 152 transitions. [2025-02-05 14:49:57,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-02-05 14:49:57,206 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:49:57,206 INFO L218 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:49:57,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-02-05 14:49:57,406 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 [2025-02-05 14:49:57,407 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:49:57,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:49:57,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1368477968, now seen corresponding path program 26 times [2025-02-05 14:49:57,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:49:57,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085995381] [2025-02-05 14:49:57,407 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:49:57,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:49:57,418 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 148 statements into 2 equivalence classes. [2025-02-05 14:49:57,437 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 148 of 148 statements. [2025-02-05 14:49:57,437 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:49:57,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 992 proven. 572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:49:58,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:49:58,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085995381] [2025-02-05 14:49:58,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085995381] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:49:58,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406388899] [2025-02-05 14:49:58,456 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:49:58,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:49:58,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:49:58,458 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) [2025-02-05 14:49:58,459 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 [2025-02-05 14:49:58,542 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 148 statements into 2 equivalence classes. [2025-02-05 14:49:58,589 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 148 of 148 statements. [2025-02-05 14:49:58,589 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:49:58,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:49:58,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-05 14:49:58,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:49:59,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 1056 proven. 506 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 14:49:59,516 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:50:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 1056 proven. 506 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 14:50:00,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406388899] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:50:00,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:50:00,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 74 [2025-02-05 14:50:00,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638767002] [2025-02-05 14:50:00,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:50:00,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2025-02-05 14:50:00,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:50:00,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2025-02-05 14:50:00,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1228, Invalid=4174, Unknown=0, NotChecked=0, Total=5402 [2025-02-05 14:50:00,243 INFO L87 Difference]: Start difference. First operand 149 states and 152 transitions. Second operand has 74 states, 74 states have (on average 3.3513513513513513) internal successors, (248), 74 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:00,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:50:00,811 INFO L93 Difference]: Finished difference Result 317 states and 367 transitions. [2025-02-05 14:50:00,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-05 14:50:00,812 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.3513513513513513) internal successors, (248), 74 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2025-02-05 14:50:00,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:50:00,813 INFO L225 Difference]: With dead ends: 317 [2025-02-05 14:50:00,813 INFO L226 Difference]: Without dead ends: 220 [2025-02-05 14:50:00,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 227 SyntacticMatches, 44 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3471 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2334, Invalid=6978, Unknown=0, NotChecked=0, Total=9312 [2025-02-05 14:50:00,814 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 204 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 14:50:00,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 472 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 14:50:00,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2025-02-05 14:50:00,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 151. [2025-02-05 14:50:00,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.0266666666666666) internal successors, (154), 150 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 154 transitions. [2025-02-05 14:50:00,823 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 154 transitions. Word has length 148 [2025-02-05 14:50:00,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:50:00,823 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 154 transitions. [2025-02-05 14:50:00,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.3513513513513513) internal successors, (248), 74 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:00,824 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 154 transitions. [2025-02-05 14:50:00,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-02-05 14:50:00,825 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:50:00,825 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:50:00,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-02-05 14:50:01,025 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 [2025-02-05 14:50:01,026 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:50:01,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:50:01,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1001706033, now seen corresponding path program 27 times [2025-02-05 14:50:01,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:50:01,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778467103] [2025-02-05 14:50:01,026 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:50:01,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:50:01,038 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 150 statements into 24 equivalence classes. [2025-02-05 14:50:01,084 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) and asserted 150 of 150 statements. [2025-02-05 14:50:01,084 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2025-02-05 14:50:01,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:50:02,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 992 proven. 618 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:02,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:50:02,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778467103] [2025-02-05 14:50:02,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778467103] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:50:02,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361571358] [2025-02-05 14:50:02,216 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:50:02,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:50:02,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:50:02,218 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) [2025-02-05 14:50:02,220 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 [2025-02-05 14:50:02,320 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 150 statements into 24 equivalence classes. [2025-02-05 14:50:02,387 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) and asserted 150 of 150 statements. [2025-02-05 14:50:02,387 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2025-02-05 14:50:02,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:50:02,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-02-05 14:50:02,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:50:03,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 1058 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:03,347 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:50:04,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 1058 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:04,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361571358] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:50:04,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:50:04,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 76 [2025-02-05 14:50:04,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114916415] [2025-02-05 14:50:04,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:50:04,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2025-02-05 14:50:04,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:50:04,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2025-02-05 14:50:04,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1303, Invalid=4397, Unknown=0, NotChecked=0, Total=5700 [2025-02-05 14:50:04,078 INFO L87 Difference]: Start difference. First operand 151 states and 154 transitions. Second operand has 76 states, 76 states have (on average 3.289473684210526) internal successors, (250), 76 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:04,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:50:04,651 INFO L93 Difference]: Finished difference Result 324 states and 376 transitions. [2025-02-05 14:50:04,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-02-05 14:50:04,651 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.289473684210526) internal successors, (250), 76 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2025-02-05 14:50:04,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:50:04,652 INFO L225 Difference]: With dead ends: 324 [2025-02-05 14:50:04,652 INFO L226 Difference]: Without dead ends: 225 [2025-02-05 14:50:04,653 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 228 SyntacticMatches, 46 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3672 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2505, Invalid=7395, Unknown=0, NotChecked=0, Total=9900 [2025-02-05 14:50:04,653 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 240 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 14:50:04,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 490 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 14:50:04,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2025-02-05 14:50:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 153. [2025-02-05 14:50:04,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.0263157894736843) internal successors, (156), 152 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:04,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 156 transitions. [2025-02-05 14:50:04,660 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 156 transitions. Word has length 150 [2025-02-05 14:50:04,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:50:04,660 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 156 transitions. [2025-02-05 14:50:04,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.289473684210526) internal successors, (250), 76 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:04,660 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 156 transitions. [2025-02-05 14:50:04,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-05 14:50:04,661 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:50:04,661 INFO L218 NwaCegarLoop]: trace histogram [25, 24, 24, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:50:04,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-02-05 14:50:04,862 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 [2025-02-05 14:50:04,862 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:50:04,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:50:04,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1879103182, now seen corresponding path program 28 times [2025-02-05 14:50:04,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:50:04,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660279095] [2025-02-05 14:50:04,863 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:50:04,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:50:04,872 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 152 statements into 2 equivalence classes. [2025-02-05 14:50:04,886 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 152 of 152 statements. [2025-02-05 14:50:04,886 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:50:04,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:50:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 552 proven. 1106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:05,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:50:05,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660279095] [2025-02-05 14:50:05,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660279095] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:50:05,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575078148] [2025-02-05 14:50:05,617 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:50:05,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:50:05,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:50:05,619 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:50:05,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-02-05 14:50:05,721 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 152 statements into 2 equivalence classes. [2025-02-05 14:50:05,773 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 152 of 152 statements. [2025-02-05 14:50:05,773 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:50:05,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:50:05,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-02-05 14:50:05,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:50:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 600 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:05,911 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:50:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 600 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:06,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575078148] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:50:06,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:50:06,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 31 [2025-02-05 14:50:06,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484759648] [2025-02-05 14:50:06,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:50:06,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-05 14:50:06,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:50:06,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-05 14:50:06,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=543, Unknown=0, NotChecked=0, Total=930 [2025-02-05 14:50:06,425 INFO L87 Difference]: Start difference. First operand 153 states and 156 transitions. Second operand has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:06,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:50:06,734 INFO L93 Difference]: Finished difference Result 170 states and 174 transitions. [2025-02-05 14:50:06,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-02-05 14:50:06,735 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2025-02-05 14:50:06,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:50:06,736 INFO L225 Difference]: With dead ends: 170 [2025-02-05 14:50:06,736 INFO L226 Difference]: Without dead ends: 168 [2025-02-05 14:50:06,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 277 SyntacticMatches, 47 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1137, Invalid=1943, Unknown=0, NotChecked=0, Total=3080 [2025-02-05 14:50:06,737 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 11 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:50:06,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 242 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:50:06,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2025-02-05 14:50:06,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 161. [2025-02-05 14:50:06,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.025) internal successors, (164), 160 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:06,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 164 transitions. [2025-02-05 14:50:06,745 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 164 transitions. Word has length 152 [2025-02-05 14:50:06,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:50:06,746 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 164 transitions. [2025-02-05 14:50:06,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:06,746 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 164 transitions. [2025-02-05 14:50:06,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-02-05 14:50:06,747 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:50:06,747 INFO L218 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:50:06,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-02-05 14:50:06,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:50:06,948 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:50:06,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:50:06,948 INFO L85 PathProgramCache]: Analyzing trace with hash 572158930, now seen corresponding path program 29 times [2025-02-05 14:50:06,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:50:06,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048272482] [2025-02-05 14:50:06,948 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:50:06,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:50:06,957 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 160 statements into 26 equivalence classes. [2025-02-05 14:50:06,998 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) and asserted 160 of 160 statements. [2025-02-05 14:50:06,998 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2025-02-05 14:50:06,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:50:08,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 1250 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:08,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:50:08,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048272482] [2025-02-05 14:50:08,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048272482] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:50:08,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594594448] [2025-02-05 14:50:08,102 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:50:08,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:50:08,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:50:08,105 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:50:08,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-02-05 14:50:08,206 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 160 statements into 26 equivalence classes. [2025-02-05 14:50:08,276 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) and asserted 160 of 160 statements. [2025-02-05 14:50:08,276 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2025-02-05 14:50:08,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:50:08,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-02-05 14:50:08,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:50:09,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 1250 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:09,365 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:50:10,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 1250 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:10,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594594448] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:50:10,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:50:10,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 81 [2025-02-05 14:50:10,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606217550] [2025-02-05 14:50:10,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:50:10,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2025-02-05 14:50:10,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:50:10,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2025-02-05 14:50:10,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1537, Invalid=4943, Unknown=0, NotChecked=0, Total=6480 [2025-02-05 14:50:10,172 INFO L87 Difference]: Start difference. First operand 161 states and 164 transitions. Second operand has 81 states, 81 states have (on average 3.345679012345679) internal successors, (271), 81 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:11,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:50:11,301 INFO L93 Difference]: Finished difference Result 449 states and 506 transitions. [2025-02-05 14:50:11,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2025-02-05 14:50:11,302 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 3.345679012345679) internal successors, (271), 81 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2025-02-05 14:50:11,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:50:11,303 INFO L225 Difference]: With dead ends: 449 [2025-02-05 14:50:11,303 INFO L226 Difference]: Without dead ends: 243 [2025-02-05 14:50:11,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 244 SyntacticMatches, 48 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5549 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4341, Invalid=12951, Unknown=0, NotChecked=0, Total=17292 [2025-02-05 14:50:11,304 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 272 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 14:50:11,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 704 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 14:50:11,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2025-02-05 14:50:11,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 165. [2025-02-05 14:50:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.024390243902439) internal successors, (168), 164 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 168 transitions. [2025-02-05 14:50:11,315 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 168 transitions. Word has length 160 [2025-02-05 14:50:11,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:50:11,316 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 168 transitions. [2025-02-05 14:50:11,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 3.345679012345679) internal successors, (271), 81 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:11,316 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 168 transitions. [2025-02-05 14:50:11,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-02-05 14:50:11,316 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:50:11,316 INFO L218 NwaCegarLoop]: trace histogram [27, 26, 26, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:50:11,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-02-05 14:50:11,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:50:11,517 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:50:11,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:50:11,517 INFO L85 PathProgramCache]: Analyzing trace with hash 698961040, now seen corresponding path program 30 times [2025-02-05 14:50:11,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:50:11,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004629734] [2025-02-05 14:50:11,518 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:50:11,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:50:11,528 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 164 statements into 27 equivalence classes. [2025-02-05 14:50:11,566 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) and asserted 164 of 164 statements. [2025-02-05 14:50:11,567 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2025-02-05 14:50:11,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:50:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 650 proven. 1302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:12,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:50:12,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004629734] [2025-02-05 14:50:12,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004629734] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:50:12,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026702737] [2025-02-05 14:50:12,337 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:50:12,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:50:12,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:50:12,339 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:50:12,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-02-05 14:50:12,455 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 164 statements into 27 equivalence classes. [2025-02-05 14:50:12,560 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) and asserted 164 of 164 statements. [2025-02-05 14:50:12,560 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2025-02-05 14:50:12,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:50:12,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-02-05 14:50:12,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:50:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 702 proven. 1250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:12,714 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:50:13,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 702 proven. 1250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:13,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026702737] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:50:13,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:50:13,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 33 [2025-02-05 14:50:13,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353511801] [2025-02-05 14:50:13,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:50:13,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-05 14:50:13,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:50:13,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-05 14:50:13,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=612, Unknown=0, NotChecked=0, Total=1056 [2025-02-05 14:50:13,312 INFO L87 Difference]: Start difference. First operand 165 states and 168 transitions. Second operand has 33 states, 33 states have (on average 5.666666666666667) internal successors, (187), 33 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:13,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:50:13,648 INFO L93 Difference]: Finished difference Result 182 states and 186 transitions. [2025-02-05 14:50:13,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-02-05 14:50:13,649 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.666666666666667) internal successors, (187), 33 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2025-02-05 14:50:13,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:50:13,649 INFO L225 Difference]: With dead ends: 182 [2025-02-05 14:50:13,650 INFO L226 Difference]: Without dead ends: 180 [2025-02-05 14:50:13,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 298 SyntacticMatches, 52 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1703 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1308, Invalid=2232, Unknown=0, NotChecked=0, Total=3540 [2025-02-05 14:50:13,650 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 11 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:50:13,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 249 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:50:13,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2025-02-05 14:50:13,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 173. [2025-02-05 14:50:13,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.0232558139534884) internal successors, (176), 172 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 176 transitions. [2025-02-05 14:50:13,657 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 176 transitions. Word has length 164 [2025-02-05 14:50:13,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:50:13,657 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 176 transitions. [2025-02-05 14:50:13,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.666666666666667) internal successors, (187), 33 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:13,657 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 176 transitions. [2025-02-05 14:50:13,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-02-05 14:50:13,658 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:50:13,658 INFO L218 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:50:13,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-02-05 14:50:13,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-02-05 14:50:13,858 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:50:13,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:50:13,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1448740756, now seen corresponding path program 31 times [2025-02-05 14:50:13,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:50:13,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689390506] [2025-02-05 14:50:13,859 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:50:13,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:50:13,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-02-05 14:50:13,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-02-05 14:50:13,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:50:13,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:50:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 1380 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:15,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:50:15,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689390506] [2025-02-05 14:50:15,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689390506] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:50:15,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130443928] [2025-02-05 14:50:15,074 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:50:15,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:50:15,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:50:15,076 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:50:15,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-02-05 14:50:15,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-02-05 14:50:15,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-02-05 14:50:15,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:50:15,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:50:15,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-02-05 14:50:15,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:50:16,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 1456 proven. 702 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 14:50:16,430 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:50:17,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 1456 proven. 702 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 14:50:17,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130443928] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:50:17,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:50:17,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 56] total 86 [2025-02-05 14:50:17,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046736330] [2025-02-05 14:50:17,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:50:17,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2025-02-05 14:50:17,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:50:17,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2025-02-05 14:50:17,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1656, Invalid=5654, Unknown=0, NotChecked=0, Total=7310 [2025-02-05 14:50:17,335 INFO L87 Difference]: Start difference. First operand 173 states and 176 transitions. Second operand has 86 states, 86 states have (on average 3.3488372093023258) internal successors, (288), 86 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:18,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:50:18,104 INFO L93 Difference]: Finished difference Result 369 states and 427 transitions. [2025-02-05 14:50:18,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-02-05 14:50:18,105 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.3488372093023258) internal successors, (288), 86 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2025-02-05 14:50:18,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:50:18,106 INFO L225 Difference]: With dead ends: 369 [2025-02-05 14:50:18,106 INFO L226 Difference]: Without dead ends: 256 [2025-02-05 14:50:18,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 263 SyntacticMatches, 52 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4727 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3170, Invalid=9486, Unknown=0, NotChecked=0, Total=12656 [2025-02-05 14:50:18,107 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 252 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 14:50:18,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 638 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 14:50:18,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2025-02-05 14:50:18,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 175. [2025-02-05 14:50:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.0229885057471264) internal successors, (178), 174 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:18,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 178 transitions. [2025-02-05 14:50:18,116 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 178 transitions. Word has length 172 [2025-02-05 14:50:18,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:50:18,116 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 178 transitions. [2025-02-05 14:50:18,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.3488372093023258) internal successors, (288), 86 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:18,116 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 178 transitions. [2025-02-05 14:50:18,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-02-05 14:50:18,117 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:50:18,117 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:50:18,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-02-05 14:50:18,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-02-05 14:50:18,318 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:50:18,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:50:18,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1874241709, now seen corresponding path program 32 times [2025-02-05 14:50:18,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:50:18,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999246335] [2025-02-05 14:50:18,318 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:50:18,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:50:18,328 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 174 statements into 2 equivalence classes. [2025-02-05 14:50:18,345 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 174 of 174 statements. [2025-02-05 14:50:18,345 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:50:18,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:50:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 1380 proven. 834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:19,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:50:19,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999246335] [2025-02-05 14:50:19,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999246335] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:50:19,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198841133] [2025-02-05 14:50:19,571 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:50:19,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:50:19,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:50:19,573 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:50:19,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-02-05 14:50:19,683 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 174 statements into 2 equivalence classes. [2025-02-05 14:50:19,738 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 174 of 174 statements. [2025-02-05 14:50:19,739 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:50:19,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:50:19,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-02-05 14:50:19,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:50:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 756 proven. 1458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:20,696 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:50:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 756 proven. 1458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:22,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198841133] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:50:22,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:50:22,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 31, 31] total 87 [2025-02-05 14:50:22,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427608459] [2025-02-05 14:50:22,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:50:22,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2025-02-05 14:50:22,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:50:22,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2025-02-05 14:50:22,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1278, Invalid=6204, Unknown=0, NotChecked=0, Total=7482 [2025-02-05 14:50:22,391 INFO L87 Difference]: Start difference. First operand 175 states and 178 transitions. Second operand has 87 states, 87 states have (on average 3.9770114942528734) internal successors, (346), 87 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:25,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:50:25,002 INFO L93 Difference]: Finished difference Result 381 states and 442 transitions. [2025-02-05 14:50:25,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2025-02-05 14:50:25,002 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 3.9770114942528734) internal successors, (346), 87 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2025-02-05 14:50:25,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:50:25,004 INFO L225 Difference]: With dead ends: 381 [2025-02-05 14:50:25,004 INFO L226 Difference]: Without dead ends: 266 [2025-02-05 14:50:25,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 291 SyntacticMatches, 56 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20626 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=7960, Invalid=42440, Unknown=0, NotChecked=0, Total=50400 [2025-02-05 14:50:25,007 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 556 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 14:50:25,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 452 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1878 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 14:50:25,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2025-02-05 14:50:25,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 181. [2025-02-05 14:50:25,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.0222222222222221) internal successors, (184), 180 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 184 transitions. [2025-02-05 14:50:25,018 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 184 transitions. Word has length 174 [2025-02-05 14:50:25,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:50:25,018 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 184 transitions. [2025-02-05 14:50:25,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 3.9770114942528734) internal successors, (346), 87 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:25,019 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 184 transitions. [2025-02-05 14:50:25,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2025-02-05 14:50:25,019 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:50:25,020 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:50:25,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-02-05 14:50:25,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-02-05 14:50:25,220 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:50:25,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:50:25,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1654802516, now seen corresponding path program 33 times [2025-02-05 14:50:25,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:50:25,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268318184] [2025-02-05 14:50:25,221 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:50:25,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:50:25,234 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 180 statements into 29 equivalence classes. [2025-02-05 14:50:25,274 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) and asserted 180 of 180 statements. [2025-02-05 14:50:25,275 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2025-02-05 14:50:25,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:50:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1487 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:26,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:50:26,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268318184] [2025-02-05 14:50:26,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268318184] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:50:26,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802668830] [2025-02-05 14:50:26,651 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:50:26,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:50:26,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:50:26,653 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:50:26,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-02-05 14:50:26,779 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 180 statements into 29 equivalence classes. [2025-02-05 14:50:26,869 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) and asserted 180 of 180 statements. [2025-02-05 14:50:26,870 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2025-02-05 14:50:26,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:50:26,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 60 conjuncts are in the unsatisfiable core [2025-02-05 14:50:26,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:50:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1568 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:28,160 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:50:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1568 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:29,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802668830] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:50:29,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:50:29,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 91 [2025-02-05 14:50:29,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307750265] [2025-02-05 14:50:29,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:50:29,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2025-02-05 14:50:29,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:50:29,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2025-02-05 14:50:29,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1864, Invalid=6326, Unknown=0, NotChecked=0, Total=8190 [2025-02-05 14:50:29,230 INFO L87 Difference]: Start difference. First operand 181 states and 184 transitions. Second operand has 91 states, 91 states have (on average 3.2967032967032965) internal successors, (300), 91 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:30,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:50:30,077 INFO L93 Difference]: Finished difference Result 389 states and 451 transitions. [2025-02-05 14:50:30,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2025-02-05 14:50:30,077 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.2967032967032965) internal successors, (300), 91 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2025-02-05 14:50:30,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:50:30,079 INFO L225 Difference]: With dead ends: 389 [2025-02-05 14:50:30,079 INFO L226 Difference]: Without dead ends: 270 [2025-02-05 14:50:30,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 273 SyntacticMatches, 56 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5314 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3600, Invalid=10442, Unknown=0, NotChecked=0, Total=14042 [2025-02-05 14:50:30,080 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 295 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 14:50:30,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 746 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 14:50:30,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2025-02-05 14:50:30,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 183. [2025-02-05 14:50:30,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.021978021978022) internal successors, (186), 182 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:30,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 186 transitions. [2025-02-05 14:50:30,091 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 186 transitions. Word has length 180 [2025-02-05 14:50:30,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:50:30,091 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 186 transitions. [2025-02-05 14:50:30,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.2967032967032965) internal successors, (300), 91 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:30,092 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 186 transitions. [2025-02-05 14:50:30,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2025-02-05 14:50:30,092 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:50:30,093 INFO L218 NwaCegarLoop]: trace histogram [30, 29, 29, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:50:30,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2025-02-05 14:50:30,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:50:30,293 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:50:30,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:50:30,294 INFO L85 PathProgramCache]: Analyzing trace with hash -85890797, now seen corresponding path program 34 times [2025-02-05 14:50:30,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:50:30,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157902960] [2025-02-05 14:50:30,294 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:50:30,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:50:30,304 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 182 statements into 2 equivalence classes. [2025-02-05 14:50:30,326 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 182 of 182 statements. [2025-02-05 14:50:30,326 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:50:30,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:50:31,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2438 backedges. 812 proven. 1626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:31,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:50:31,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157902960] [2025-02-05 14:50:31,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157902960] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:50:31,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913735253] [2025-02-05 14:50:31,236 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:50:31,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:50:31,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:50:31,238 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:50:31,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-02-05 14:50:31,360 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 182 statements into 2 equivalence classes. [2025-02-05 14:50:31,418 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 182 of 182 statements. [2025-02-05 14:50:31,418 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:50:31,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:50:31,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-02-05 14:50:31,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:50:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2438 backedges. 870 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:31,634 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:50:32,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2438 backedges. 870 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:50:32,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913735253] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:50:32,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:50:32,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 36 [2025-02-05 14:50:32,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108310140] [2025-02-05 14:50:32,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:50:32,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-05 14:50:32,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:50:32,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-05 14:50:32,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=723, Unknown=0, NotChecked=0, Total=1260 [2025-02-05 14:50:32,334 INFO L87 Difference]: Start difference. First operand 183 states and 186 transitions. Second operand has 36 states, 36 states have (on average 5.722222222222222) internal successors, (206), 36 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:32,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:50:32,725 INFO L93 Difference]: Finished difference Result 200 states and 204 transitions. [2025-02-05 14:50:32,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-02-05 14:50:32,725 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.722222222222222) internal successors, (206), 36 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2025-02-05 14:50:32,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:50:32,726 INFO L225 Difference]: With dead ends: 200 [2025-02-05 14:50:32,726 INFO L226 Difference]: Without dead ends: 198 [2025-02-05 14:50:32,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 332 SyntacticMatches, 57 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2018 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1587, Invalid=2703, Unknown=0, NotChecked=0, Total=4290 [2025-02-05 14:50:32,727 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 13 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:50:32,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 314 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:50:32,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2025-02-05 14:50:32,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 191. [2025-02-05 14:50:32,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.0210526315789474) internal successors, (194), 190 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:32,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 194 transitions. [2025-02-05 14:50:32,738 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 194 transitions. Word has length 182 [2025-02-05 14:50:32,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:50:32,739 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 194 transitions. [2025-02-05 14:50:32,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.722222222222222) internal successors, (206), 36 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:50:32,739 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 194 transitions. [2025-02-05 14:50:32,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2025-02-05 14:50:32,740 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:50:32,740 INFO L218 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:50:32,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-02-05 14:50:32,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-02-05 14:50:32,940 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:50:32,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:50:32,941 INFO L85 PathProgramCache]: Analyzing trace with hash -893718249, now seen corresponding path program 35 times [2025-02-05 14:50:32,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:50:32,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762676627] [2025-02-05 14:50:32,941 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:50:32,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:50:32,952 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 190 statements into 31 equivalence classes. [2025-02-05 14:50:33,015 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) and asserted 190 of 190 statements. [2025-02-05 14:50:33,015 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2025-02-05 14:50:33,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat