./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/mbpr5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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/array-tiling/mbpr5.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5503daab190ef8b57bdc3b49ed300bfd661cba05f76774439c2c92cf1668f08b --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 16:57:47,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 16:57:47,485 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 16:57:47,491 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 16:57:47,491 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 16:57:47,511 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 16:57:47,512 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 16:57:47,512 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 16:57:47,513 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 16:57:47,514 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 16:57:47,514 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 16:57:47,514 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 16:57:47,514 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 16:57:47,514 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 16:57:47,514 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 16:57:47,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 16:57:47,514 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 16:57:47,514 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 16:57:47,514 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 16:57:47,515 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 16:57:47,515 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 16:57:47,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 16:57:47,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 16:57:47,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 16:57:47,515 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 16:57:47,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 16:57:47,515 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 16:57:47,515 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 16:57:47,515 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 16:57:47,515 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 16:57:47,515 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 16:57:47,515 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 16:57:47,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 16:57:47,516 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 16:57:47,516 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 16:57:47,516 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 16:57:47,516 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 16:57:47,516 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 16:57:47,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 16:57:47,516 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 16:57:47,516 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 16:57:47,516 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 16:57:47,516 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 16:57:47,516 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 -> 5503daab190ef8b57bdc3b49ed300bfd661cba05f76774439c2c92cf1668f08b [2025-02-07 16:57:47,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 16:57:47,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 16:57:47,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 16:57:47,807 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 16:57:47,808 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 16:57:47,809 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/mbpr5.c [2025-02-07 16:57:49,068 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/96185a578/518f8bd48fea49f9bd08acc335dfa47f/FLAG2e734ae10 [2025-02-07 16:57:49,402 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 16:57:49,403 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr5.c [2025-02-07 16:57:49,414 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/96185a578/518f8bd48fea49f9bd08acc335dfa47f/FLAG2e734ae10 [2025-02-07 16:57:49,431 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/96185a578/518f8bd48fea49f9bd08acc335dfa47f [2025-02-07 16:57:49,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 16:57:49,437 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 16:57:49,438 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 16:57:49,439 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 16:57:49,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 16:57:49,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 04:57:49" (1/1) ... [2025-02-07 16:57:49,444 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d08bdda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:57:49, skipping insertion in model container [2025-02-07 16:57:49,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 04:57:49" (1/1) ... [2025-02-07 16:57:49,462 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 16:57:49,589 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/array-tiling/mbpr5.c[396,409] [2025-02-07 16:57:49,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 16:57:49,639 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 16:57:49,648 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/array-tiling/mbpr5.c[396,409] [2025-02-07 16:57:49,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 16:57:49,695 INFO L204 MainTranslator]: Completed translation [2025-02-07 16:57:49,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:57:49 WrapperNode [2025-02-07 16:57:49,696 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 16:57:49,697 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 16:57:49,697 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 16:57:49,697 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 16:57:49,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:57:49" (1/1) ... [2025-02-07 16:57:49,710 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:57:49" (1/1) ... [2025-02-07 16:57:49,740 INFO L138 Inliner]: procedures = 15, calls = 72, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 164 [2025-02-07 16:57:49,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 16:57:49,741 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 16:57:49,742 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 16:57:49,742 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 16:57:49,748 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:57:49" (1/1) ... [2025-02-07 16:57:49,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:57:49" (1/1) ... [2025-02-07 16:57:49,751 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:57:49" (1/1) ... [2025-02-07 16:57:49,761 INFO L175 MemorySlicer]: Split 62 memory accesses to 3 slices as follows [2, 8, 52]. 84 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 30 writes are split as follows [0, 0, 30]. [2025-02-07 16:57:49,761 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:57:49" (1/1) ... [2025-02-07 16:57:49,761 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:57:49" (1/1) ... [2025-02-07 16:57:49,772 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:57:49" (1/1) ... [2025-02-07 16:57:49,773 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:57:49" (1/1) ... [2025-02-07 16:57:49,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:57:49" (1/1) ... [2025-02-07 16:57:49,775 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:57:49" (1/1) ... [2025-02-07 16:57:49,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 16:57:49,781 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 16:57:49,781 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 16:57:49,781 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 16:57:49,782 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:57:49" (1/1) ... [2025-02-07 16:57:49,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 16:57:49,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:57:49,812 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) [2025-02-07 16:57:49,818 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 [2025-02-07 16:57:49,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 16:57:49,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 16:57:49,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 16:57:49,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-07 16:57:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-07 16:57:49,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-07 16:57:49,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-07 16:57:49,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-07 16:57:49,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 16:57:49,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 16:57:49,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-07 16:57:49,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-07 16:57:49,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-07 16:57:49,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-07 16:57:49,903 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 16:57:49,904 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 16:57:50,168 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2025-02-07 16:57:50,168 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 16:57:50,175 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 16:57:50,175 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 16:57:50,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 04:57:50 BoogieIcfgContainer [2025-02-07 16:57:50,176 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 16:57:50,179 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 16:57:50,179 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 16:57:50,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 16:57:50,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 04:57:49" (1/3) ... [2025-02-07 16:57:50,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8386d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 04:57:50, skipping insertion in model container [2025-02-07 16:57:50,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:57:49" (2/3) ... [2025-02-07 16:57:50,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8386d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 04:57:50, skipping insertion in model container [2025-02-07 16:57:50,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 04:57:50" (3/3) ... [2025-02-07 16:57:50,186 INFO L128 eAbstractionObserver]: Analyzing ICFG mbpr5.c [2025-02-07 16:57:50,199 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 16:57:50,202 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mbpr5.c that has 1 procedures, 31 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-02-07 16:57:50,253 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 16:57:50,264 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;@73ec764a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 16:57:50,264 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 16:57:50,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:57:50,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-07 16:57:50,273 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:57:50,273 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:57:50,274 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:57:50,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:57:50,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2130701986, now seen corresponding path program 1 times [2025-02-07 16:57:50,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:57:50,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427746931] [2025-02-07 16:57:50,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:57:50,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:57:50,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-07 16:57:50,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-07 16:57:50,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:57:50,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:57:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:57:50,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:57:50,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427746931] [2025-02-07 16:57:50,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427746931] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:57:50,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:57:50,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 16:57:50,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269812285] [2025-02-07 16:57:50,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:57:50,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 16:57:50,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:57:50,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 16:57:50,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 16:57:50,512 INFO L87 Difference]: Start difference. First operand has 31 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:57:50,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:57:50,525 INFO L93 Difference]: Finished difference Result 57 states and 83 transitions. [2025-02-07 16:57:50,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 16:57:50,527 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-07 16:57:50,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:57:50,532 INFO L225 Difference]: With dead ends: 57 [2025-02-07 16:57:50,532 INFO L226 Difference]: Without dead ends: 27 [2025-02-07 16:57:50,534 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 [2025-02-07 16:57:50,537 INFO L435 NwaCegarLoop]: 43 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, 43 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 [2025-02-07 16:57:50,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:57:50,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-02-07 16:57:50,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-02-07 16:57:50,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 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) [2025-02-07 16:57:50,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 38 transitions. [2025-02-07 16:57:50,568 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 38 transitions. Word has length 15 [2025-02-07 16:57:50,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:57:50,570 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 38 transitions. [2025-02-07 16:57:50,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:57:50,570 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 38 transitions. [2025-02-07 16:57:50,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-07 16:57:50,571 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:57:50,571 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:57:50,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 16:57:50,572 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:57:50,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:57:50,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2001619267, now seen corresponding path program 1 times [2025-02-07 16:57:50,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:57:50,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686889639] [2025-02-07 16:57:50,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:57:50,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:57:50,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-07 16:57:50,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-07 16:57:50,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:57:50,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:57:50,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:57:50,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:57:50,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686889639] [2025-02-07 16:57:50,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686889639] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:57:50,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:57:50,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 16:57:50,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533173264] [2025-02-07 16:57:50,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:57:50,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 16:57:50,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:57:50,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 16:57:50,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-07 16:57:50,921 INFO L87 Difference]: Start difference. First operand 27 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:57:51,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:57:51,047 INFO L93 Difference]: Finished difference Result 61 states and 91 transitions. [2025-02-07 16:57:51,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 16:57:51,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-07 16:57:51,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:57:51,048 INFO L225 Difference]: With dead ends: 61 [2025-02-07 16:57:51,049 INFO L226 Difference]: Without dead ends: 42 [2025-02-07 16:57:51,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-07 16:57:51,050 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 68 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 16:57:51,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 17 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 16:57:51,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-02-07 16:57:51,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2025-02-07 16:57:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 31 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:57:51,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2025-02-07 16:57:51,076 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 15 [2025-02-07 16:57:51,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:57:51,076 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2025-02-07 16:57:51,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:57:51,076 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2025-02-07 16:57:51,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-07 16:57:51,077 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:57:51,077 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:57:51,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-07 16:57:51,077 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:57:51,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:57:51,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1506632621, now seen corresponding path program 1 times [2025-02-07 16:57:51,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:57:51,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930794511] [2025-02-07 16:57:51,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:57:51,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:57:51,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-07 16:57:51,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-07 16:57:51,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:57:51,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:57:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 16:57:51,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:57:51,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930794511] [2025-02-07 16:57:51,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930794511] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:57:51,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:57:51,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 16:57:51,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634534400] [2025-02-07 16:57:51,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:57:51,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 16:57:51,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:57:51,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 16:57:51,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:57:51,284 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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) [2025-02-07 16:57:51,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:57:51,316 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2025-02-07 16:57:51,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 16:57:51,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-02-07 16:57:51,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:57:51,317 INFO L225 Difference]: With dead ends: 42 [2025-02-07 16:57:51,318 INFO L226 Difference]: Without dead ends: 32 [2025-02-07 16:57:51,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:57:51,318 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:57:51,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 27 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:57:51,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-02-07 16:57:51,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2025-02-07 16:57:51,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:57:51,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2025-02-07 16:57:51,325 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 30 [2025-02-07 16:57:51,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:57:51,325 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2025-02-07 16:57:51,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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) [2025-02-07 16:57:51,326 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2025-02-07 16:57:51,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-07 16:57:51,327 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:57:51,327 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:57:51,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-07 16:57:51,327 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:57:51,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:57:51,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1045524340, now seen corresponding path program 1 times [2025-02-07 16:57:51,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:57:51,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341333885] [2025-02-07 16:57:51,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:57:51,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:57:51,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-07 16:57:51,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-07 16:57:51,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:57:51,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:57:53,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:57:53,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:57:53,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341333885] [2025-02-07 16:57:53,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341333885] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:57:53,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373815511] [2025-02-07 16:57:53,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:57:53,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:57:53,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:57:53,683 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) [2025-02-07 16:57:53,686 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 [2025-02-07 16:57:53,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-07 16:57:53,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-07 16:57:53,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:57:53,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:57:53,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-07 16:57:53,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:57:53,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-07 16:57:53,966 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:57:53,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 25 [2025-02-07 16:57:54,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-07 16:57:54,052 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:57:54,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 18 [2025-02-07 16:57:54,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-07 16:57:54,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 11 [2025-02-07 16:57:54,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-07 16:57:54,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:57:54,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 32 [2025-02-07 16:57:54,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-07 16:57:54,274 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:57:54,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 21 [2025-02-07 16:57:54,358 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:57:54,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2025-02-07 16:57:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:57:54,388 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:57:54,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2025-02-07 16:57:54,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2025-02-07 16:57:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 16:57:54,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373815511] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:57:54,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:57:54,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 7] total 20 [2025-02-07 16:57:54,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571207836] [2025-02-07 16:57:54,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:57:54,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-07 16:57:54,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:57:54,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-07 16:57:54,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2025-02-07 16:57:54,719 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 20 states, 20 states have (on average 4.05) internal successors, (81), 20 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:57:55,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:57:55,114 INFO L93 Difference]: Finished difference Result 85 states and 111 transitions. [2025-02-07 16:57:55,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-07 16:57:55,114 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 20 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-02-07 16:57:55,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:57:55,115 INFO L225 Difference]: With dead ends: 85 [2025-02-07 16:57:55,115 INFO L226 Difference]: Without dead ends: 59 [2025-02-07 16:57:55,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2025-02-07 16:57:55,116 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 138 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 16:57:55,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 86 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 16:57:55,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-02-07 16:57:55,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2025-02-07 16:57:55,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:57:55,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2025-02-07 16:57:55,126 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 30 [2025-02-07 16:57:55,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:57:55,126 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2025-02-07 16:57:55,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 20 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:57:55,128 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2025-02-07 16:57:55,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-07 16:57:55,129 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:57:55,129 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:57:55,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-07 16:57:55,330 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 [2025-02-07 16:57:55,330 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:57:55,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:57:55,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1045494549, now seen corresponding path program 1 times [2025-02-07 16:57:55,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:57:55,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954317986] [2025-02-07 16:57:55,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:57:55,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:57:55,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-07 16:57:55,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-07 16:57:55,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:57:55,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:57:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-07 16:57:55,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:57:55,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954317986] [2025-02-07 16:57:55,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954317986] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:57:55,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:57:55,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 16:57:55,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549453840] [2025-02-07 16:57:55,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:57:55,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 16:57:55,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:57:55,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 16:57:55,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 16:57:55,422 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 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) [2025-02-07 16:57:55,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:57:55,443 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2025-02-07 16:57:55,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 16:57:55,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-02-07 16:57:55,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:57:55,444 INFO L225 Difference]: With dead ends: 38 [2025-02-07 16:57:55,444 INFO L226 Difference]: Without dead ends: 36 [2025-02-07 16:57:55,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 16:57:55,445 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:57:55,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:57:55,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-02-07 16:57:55,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2025-02-07 16:57:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 35 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:57:55,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2025-02-07 16:57:55,455 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 30 [2025-02-07 16:57:55,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:57:55,456 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2025-02-07 16:57:55,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 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) [2025-02-07 16:57:55,456 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2025-02-07 16:57:55,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-07 16:57:55,457 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:57:55,457 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:57:55,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-07 16:57:55,457 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:57:55,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:57:55,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1977382688, now seen corresponding path program 1 times [2025-02-07 16:57:55,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:57:55,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649447236] [2025-02-07 16:57:55,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:57:55,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:57:55,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-07 16:57:55,493 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-07 16:57:55,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:57:55,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:57:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 16:57:56,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:57:56,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649447236] [2025-02-07 16:57:56,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649447236] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:57:56,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017334680] [2025-02-07 16:57:56,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:57:56,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:57:56,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:57:56,755 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) [2025-02-07 16:57:56,757 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 [2025-02-07 16:57:56,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-07 16:57:56,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-07 16:57:56,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:57:56,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:57:56,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-07 16:57:56,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:57:56,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-07 16:57:56,987 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:57:56,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 18 [2025-02-07 16:57:57,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-07 16:57:57,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 11 [2025-02-07 16:57:57,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-07 16:57:57,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:57:57,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 32 [2025-02-07 16:57:57,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-07 16:57:57,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:57:57,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 21 [2025-02-07 16:57:57,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:57:57,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2025-02-07 16:57:57,325 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 16:57:57,325 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:57:57,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2025-02-07 16:57:57,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-02-07 16:57:57,628 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 16:57:57,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017334680] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:57:57,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:57:57,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 21 [2025-02-07 16:57:57,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297216693] [2025-02-07 16:57:57,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:57:57,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-07 16:57:57,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:57:57,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-07 16:57:57,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2025-02-07 16:57:57,630 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 21 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) [2025-02-07 16:57:58,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:57:58,032 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2025-02-07 16:57:58,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-07 16:57:58,032 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 21 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) Word has length 35 [2025-02-07 16:57:58,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:57:58,033 INFO L225 Difference]: With dead ends: 84 [2025-02-07 16:57:58,034 INFO L226 Difference]: Without dead ends: 58 [2025-02-07 16:57:58,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=701, Unknown=0, NotChecked=0, Total=930 [2025-02-07 16:57:58,036 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 168 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 16:57:58,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 75 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 16:57:58,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-02-07 16:57:58,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 41. [2025-02-07 16:57:58,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 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) [2025-02-07 16:57:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2025-02-07 16:57:58,047 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 35 [2025-02-07 16:57:58,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:57:58,047 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2025-02-07 16:57:58,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 21 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) [2025-02-07 16:57:58,047 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2025-02-07 16:57:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-02-07 16:57:58,048 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:57:58,048 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:57:58,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-07 16:57:58,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:57:58,254 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:57:58,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:57:58,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1419729652, now seen corresponding path program 2 times [2025-02-07 16:57:58,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:57:58,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612439999] [2025-02-07 16:57:58,255 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:57:58,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:57:58,273 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-02-07 16:57:58,294 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-02-07 16:57:58,295 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:57:58,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:57:59,135 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 16:57:59,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:57:59,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612439999] [2025-02-07 16:57:59,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612439999] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:57:59,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534511035] [2025-02-07 16:57:59,136 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:57:59,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:57:59,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:57:59,138 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) [2025-02-07 16:57:59,141 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 [2025-02-07 16:57:59,206 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-02-07 16:57:59,238 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-02-07 16:57:59,238 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:57:59,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:57:59,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-02-07 16:57:59,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:57:59,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-07 16:57:59,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2025-02-07 16:57:59,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-07 16:57:59,410 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:57:59,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 32 [2025-02-07 16:57:59,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-07 16:57:59,467 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:57:59,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 21 [2025-02-07 16:57:59,652 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:57:59,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2025-02-07 16:57:59,670 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 16:57:59,670 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:57:59,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2025-02-07 16:57:59,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-02-07 16:57:59,926 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 16:57:59,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534511035] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:57:59,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:57:59,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 24 [2025-02-07 16:57:59,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512665373] [2025-02-07 16:57:59,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:57:59,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-07 16:57:59,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:57:59,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-07 16:57:59,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2025-02-07 16:57:59,929 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:58:00,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:58:00,608 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2025-02-07 16:58:00,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-07 16:58:00,608 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2025-02-07 16:58:00,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:58:00,610 INFO L225 Difference]: With dead ends: 111 [2025-02-07 16:58:00,610 INFO L226 Difference]: Without dead ends: 84 [2025-02-07 16:58:00,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=367, Invalid=1355, Unknown=0, NotChecked=0, Total=1722 [2025-02-07 16:58:00,612 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 208 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 16:58:00,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 110 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 16:58:00,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-02-07 16:58:00,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 46. [2025-02-07 16:58:00,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:58:00,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2025-02-07 16:58:00,619 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 40 [2025-02-07 16:58:00,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:58:00,620 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2025-02-07 16:58:00,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.625) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:58:00,620 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2025-02-07 16:58:00,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-07 16:58:00,621 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:58:00,621 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:58:00,629 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 [2025-02-07 16:58:00,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:58:00,825 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:58:00,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:58:00,826 INFO L85 PathProgramCache]: Analyzing trace with hash -620084128, now seen corresponding path program 3 times [2025-02-07 16:58:00,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:58:00,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148160969] [2025-02-07 16:58:00,826 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:58:00,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:58:00,839 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 4 equivalence classes. [2025-02-07 16:58:00,866 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 45 of 45 statements. [2025-02-07 16:58:00,867 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-07 16:58:00,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:58:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 16:58:01,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:58:01,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148160969] [2025-02-07 16:58:01,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148160969] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:58:01,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387840305] [2025-02-07 16:58:01,667 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:58:01,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:58:01,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:58:01,670 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) [2025-02-07 16:58:01,671 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 [2025-02-07 16:58:01,741 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 4 equivalence classes. [2025-02-07 16:58:01,991 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 45 of 45 statements. [2025-02-07 16:58:01,991 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-07 16:58:01,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:58:01,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-07 16:58:01,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:58:02,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-07 16:58:02,148 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:02,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 39 [2025-02-07 16:58:02,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-07 16:58:02,226 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:02,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 21 [2025-02-07 16:58:02,451 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:02,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2025-02-07 16:58:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-07 16:58:02,468 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:58:02,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2025-02-07 16:58:02,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-02-07 16:58:02,735 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 16:58:02,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387840305] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:58:02,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:58:02,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 27 [2025-02-07 16:58:02,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561271069] [2025-02-07 16:58:02,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:58:02,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-07 16:58:02,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:58:02,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-07 16:58:02,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2025-02-07 16:58:02,740 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 27 states, 27 states have (on average 4.666666666666667) internal successors, (126), 27 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:58:03,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:58:03,392 INFO L93 Difference]: Finished difference Result 107 states and 127 transitions. [2025-02-07 16:58:03,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-07 16:58:03,393 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.666666666666667) internal successors, (126), 27 states have internal predecessors, (126), 0 states have call successors, (0), 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 45 [2025-02-07 16:58:03,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:58:03,395 INFO L225 Difference]: With dead ends: 107 [2025-02-07 16:58:03,395 INFO L226 Difference]: Without dead ends: 79 [2025-02-07 16:58:03,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=340, Invalid=1552, Unknown=0, NotChecked=0, Total=1892 [2025-02-07 16:58:03,397 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 133 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 16:58:03,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 112 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 16:58:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-02-07 16:58:03,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 51. [2025-02-07 16:58:03,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.14) internal successors, (57), 50 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:58:03,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2025-02-07 16:58:03,411 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 45 [2025-02-07 16:58:03,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:58:03,413 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2025-02-07 16:58:03,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.666666666666667) internal successors, (126), 27 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:58:03,413 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2025-02-07 16:58:03,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-07 16:58:03,414 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:58:03,414 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:58:03,425 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 [2025-02-07 16:58:03,614 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,SelfDestructingSolverStorable7 [2025-02-07 16:58:03,615 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:58:03,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:58:03,615 INFO L85 PathProgramCache]: Analyzing trace with hash -287106676, now seen corresponding path program 4 times [2025-02-07 16:58:03,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:58:03,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861974994] [2025-02-07 16:58:03,616 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:58:03,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:58:03,630 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 50 statements into 2 equivalence classes. [2025-02-07 16:58:03,646 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-02-07 16:58:03,646 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:58:03,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:58:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 16:58:04,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:58:04,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861974994] [2025-02-07 16:58:04,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861974994] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:58:04,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109317313] [2025-02-07 16:58:04,078 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:58:04,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:58:04,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:58:04,080 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) [2025-02-07 16:58:04,083 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 [2025-02-07 16:58:04,147 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 50 statements into 2 equivalence classes. [2025-02-07 16:58:04,181 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-02-07 16:58:04,182 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:58:04,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:58:04,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-07 16:58:04,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:58:04,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-07 16:58:04,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2025-02-07 16:58:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 16:58:04,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:58:04,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2025-02-07 16:58:04,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2025-02-07 16:58:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 16:58:04,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109317313] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:58:04,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:58:04,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 26 [2025-02-07 16:58:04,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644042261] [2025-02-07 16:58:04,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:58:04,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-07 16:58:04,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:58:04,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-07 16:58:04,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2025-02-07 16:58:04,627 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 26 states, 26 states have (on average 4.076923076923077) internal successors, (106), 26 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:58:05,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:58:05,068 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2025-02-07 16:58:05,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-07 16:58:05,068 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.076923076923077) internal successors, (106), 26 states have internal predecessors, (106), 0 states have call successors, (0), 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 [2025-02-07 16:58:05,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:58:05,069 INFO L225 Difference]: With dead ends: 82 [2025-02-07 16:58:05,069 INFO L226 Difference]: Without dead ends: 80 [2025-02-07 16:58:05,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2025-02-07 16:58:05,070 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 16:58:05,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 153 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 16:58:05,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-02-07 16:58:05,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 56. [2025-02-07 16:58:05,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 55 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:58:05,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2025-02-07 16:58:05,076 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 50 [2025-02-07 16:58:05,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:58:05,077 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2025-02-07 16:58:05,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.076923076923077) internal successors, (106), 26 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:58:05,077 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2025-02-07 16:58:05,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-07 16:58:05,078 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:58:05,078 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:58:05,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-07 16:58:05,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:58:05,282 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:58:05,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:58:05,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1323814689, now seen corresponding path program 5 times [2025-02-07 16:58:05,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:58:05,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122960548] [2025-02-07 16:58:05,282 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 16:58:05,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:58:05,294 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 55 statements into 6 equivalence classes. [2025-02-07 16:58:05,310 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 55 of 55 statements. [2025-02-07 16:58:05,310 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-07 16:58:05,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:58:05,591 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 70 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 16:58:05,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:58:05,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122960548] [2025-02-07 16:58:05,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122960548] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:58:05,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893594712] [2025-02-07 16:58:05,592 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 16:58:05,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:58:05,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:58:05,594 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) [2025-02-07 16:58:05,596 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 [2025-02-07 16:58:05,673 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 55 statements into 6 equivalence classes. [2025-02-07 16:58:06,073 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 55 of 55 statements. [2025-02-07 16:58:06,073 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-07 16:58:06,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:58:06,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-07 16:58:06,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:58:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 70 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 16:58:06,562 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:58:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 70 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 16:58:06,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893594712] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:58:06,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:58:06,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 34 [2025-02-07 16:58:06,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154908264] [2025-02-07 16:58:06,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:58:06,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-07 16:58:06,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:58:06,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-07 16:58:06,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=828, Unknown=0, NotChecked=0, Total=1122 [2025-02-07 16:58:06,758 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 34 states, 34 states have (on average 4.5588235294117645) internal successors, (155), 34 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:58:07,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:58:07,088 INFO L93 Difference]: Finished difference Result 169 states and 192 transitions. [2025-02-07 16:58:07,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-07 16:58:07,088 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.5588235294117645) internal successors, (155), 34 states have internal predecessors, (155), 0 states have call successors, (0), 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 55 [2025-02-07 16:58:07,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:58:07,089 INFO L225 Difference]: With dead ends: 169 [2025-02-07 16:58:07,089 INFO L226 Difference]: Without dead ends: 81 [2025-02-07 16:58:07,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=402, Invalid=1080, Unknown=0, NotChecked=0, Total=1482 [2025-02-07 16:58:07,090 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 285 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 16:58:07,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 138 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 16:58:07,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2025-02-07 16:58:07,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2025-02-07 16:58:07,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.1142857142857143) internal successors, (78), 70 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) [2025-02-07 16:58:07,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2025-02-07 16:58:07,108 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 55 [2025-02-07 16:58:07,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:58:07,109 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2025-02-07 16:58:07,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.5588235294117645) internal successors, (155), 34 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:58:07,109 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2025-02-07 16:58:07,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-02-07 16:58:07,110 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:58:07,110 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:58:07,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-07 16:58:07,310 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,SelfDestructingSolverStorable9 [2025-02-07 16:58:07,311 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:58:07,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:58:07,311 INFO L85 PathProgramCache]: Analyzing trace with hash 104411822, now seen corresponding path program 6 times [2025-02-07 16:58:07,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:58:07,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473819360] [2025-02-07 16:58:07,312 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 16:58:07,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:58:07,330 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 70 statements into 6 equivalence classes. [2025-02-07 16:58:07,393 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 70 of 70 statements. [2025-02-07 16:58:07,393 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-02-07 16:58:07,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:58:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 10 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-07 16:58:10,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:58:10,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473819360] [2025-02-07 16:58:10,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473819360] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:58:10,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424449470] [2025-02-07 16:58:10,114 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 16:58:10,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:58:10,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:58:10,116 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) [2025-02-07 16:58:10,118 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 [2025-02-07 16:58:10,210 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 70 statements into 6 equivalence classes. [2025-02-07 16:58:11,231 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 70 of 70 statements. [2025-02-07 16:58:11,231 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-02-07 16:58:11,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:58:11,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 78 conjuncts are in the unsatisfiable core [2025-02-07 16:58:11,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:58:11,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-07 16:58:11,356 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:11,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 25 [2025-02-07 16:58:11,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-07 16:58:11,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:11,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 28 [2025-02-07 16:58:11,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:11,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 25 [2025-02-07 16:58:11,521 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:11,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 35 [2025-02-07 16:58:11,612 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:11,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 28 [2025-02-07 16:58:11,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:11,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 21 [2025-02-07 16:58:11,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-07 16:58:11,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 11 [2025-02-07 16:58:11,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-07 16:58:11,689 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:11,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 39 [2025-02-07 16:58:11,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-07 16:58:11,725 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:11,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 32 [2025-02-07 16:58:11,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-07 16:58:11,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:11,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 21 [2025-02-07 16:58:11,835 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:11,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-07 16:58:11,882 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:11,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 31 [2025-02-07 16:58:12,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:12,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 13 [2025-02-07 16:58:12,325 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 10 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:58:12,325 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:58:17,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2025-02-07 16:58:17,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-02-07 16:58:17,163 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 10 proven. 77 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-07 16:58:17,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424449470] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:58:17,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:58:17,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23, 14] total 46 [2025-02-07 16:58:17,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311441880] [2025-02-07 16:58:17,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:58:17,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-02-07 16:58:17,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:58:17,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-02-07 16:58:17,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1871, Unknown=0, NotChecked=0, Total=2070 [2025-02-07 16:58:17,165 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand has 46 states, 46 states have (on average 4.217391304347826) internal successors, (194), 46 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) [2025-02-07 16:58:20,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:58:20,850 INFO L93 Difference]: Finished difference Result 275 states and 323 transitions. [2025-02-07 16:58:20,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2025-02-07 16:58:20,851 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.217391304347826) internal successors, (194), 46 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) Word has length 70 [2025-02-07 16:58:20,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:58:20,852 INFO L225 Difference]: With dead ends: 275 [2025-02-07 16:58:20,852 INFO L226 Difference]: Without dead ends: 266 [2025-02-07 16:58:20,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 118 SyntacticMatches, 10 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4885 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1832, Invalid=14170, Unknown=0, NotChecked=0, Total=16002 [2025-02-07 16:58:20,858 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 1108 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 2151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-07 16:58:20,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 213 Invalid, 2151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 1687 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-07 16:58:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2025-02-07 16:58:20,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 76. [2025-02-07 16:58:20,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.1066666666666667) internal successors, (83), 75 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:58:20,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2025-02-07 16:58:20,881 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 70 [2025-02-07 16:58:20,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:58:20,882 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2025-02-07 16:58:20,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.217391304347826) internal successors, (194), 46 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) [2025-02-07 16:58:20,882 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2025-02-07 16:58:20,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-07 16:58:20,882 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:58:20,883 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:58:20,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-07 16:58:21,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:58:21,083 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:58:21,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:58:21,084 INFO L85 PathProgramCache]: Analyzing trace with hash 921889790, now seen corresponding path program 7 times [2025-02-07 16:58:21,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:58:21,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608751534] [2025-02-07 16:58:21,084 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 16:58:21,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:58:21,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-07 16:58:21,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-07 16:58:21,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:58:21,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:58:24,713 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 12 proven. 110 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 16:58:24,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:58:24,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608751534] [2025-02-07 16:58:24,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608751534] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:58:24,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402337482] [2025-02-07 16:58:24,713 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 16:58:24,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:58:24,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:58:24,715 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) [2025-02-07 16:58:24,716 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 [2025-02-07 16:58:24,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-07 16:58:24,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-07 16:58:24,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:58:24,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:58:24,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 71 conjuncts are in the unsatisfiable core [2025-02-07 16:58:24,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:58:25,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-07 16:58:25,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:25,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 18 [2025-02-07 16:58:25,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-07 16:58:25,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2025-02-07 16:58:25,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-07 16:58:25,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 11 [2025-02-07 16:58:25,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-07 16:58:25,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:25,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 39 [2025-02-07 16:58:25,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-07 16:58:25,220 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:25,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 32 [2025-02-07 16:58:25,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-07 16:58:25,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:25,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 21 [2025-02-07 16:58:25,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:25,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-07 16:58:25,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:25,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 31 [2025-02-07 16:58:25,944 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:25,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 13 [2025-02-07 16:58:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 12 proven. 111 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 16:58:25,970 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:58:30,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2025-02-07 16:58:30,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-02-07 16:58:30,813 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 16:58:30,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402337482] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:58:30,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:58:30,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 19, 15] total 56 [2025-02-07 16:58:30,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449927632] [2025-02-07 16:58:30,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:58:30,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-02-07 16:58:30,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:58:30,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-02-07 16:58:30,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=2830, Unknown=1, NotChecked=0, Total=3080 [2025-02-07 16:58:30,816 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 56 states, 56 states have (on average 3.75) internal successors, (210), 56 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:58:36,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:58:36,465 INFO L93 Difference]: Finished difference Result 322 states and 368 transitions. [2025-02-07 16:58:36,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2025-02-07 16:58:36,466 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.75) internal successors, (210), 56 states have internal predecessors, (210), 0 states have call successors, (0), 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 75 [2025-02-07 16:58:36,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:58:36,467 INFO L225 Difference]: With dead ends: 322 [2025-02-07 16:58:36,467 INFO L226 Difference]: Without dead ends: 262 [2025-02-07 16:58:36,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 124 SyntacticMatches, 9 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6875 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=2233, Invalid=19522, Unknown=1, NotChecked=0, Total=21756 [2025-02-07 16:58:36,472 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 1186 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 3789 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 4183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 3789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:58:36,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 432 Invalid, 4183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 3789 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-07 16:58:36,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2025-02-07 16:58:36,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 112. [2025-02-07 16:58:36,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.0810810810810811) internal successors, (120), 111 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) [2025-02-07 16:58:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 120 transitions. [2025-02-07 16:58:36,491 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 120 transitions. Word has length 75 [2025-02-07 16:58:36,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:58:36,492 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 120 transitions. [2025-02-07 16:58:36,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.75) internal successors, (210), 56 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:58:36,492 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 120 transitions. [2025-02-07 16:58:36,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-02-07 16:58:36,493 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:58:36,493 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:58:36,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-07 16:58:36,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:58:36,694 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:58:36,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:58:36,694 INFO L85 PathProgramCache]: Analyzing trace with hash -890731346, now seen corresponding path program 8 times [2025-02-07 16:58:36,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:58:36,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566363766] [2025-02-07 16:58:36,694 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:58:36,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:58:36,707 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-02-07 16:58:36,733 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-02-07 16:58:36,733 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:58:36,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:58:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 14 proven. 138 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 16:58:39,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:58:39,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566363766] [2025-02-07 16:58:39,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566363766] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:58:39,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663442766] [2025-02-07 16:58:39,144 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:58:39,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:58:39,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:58:39,146 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) [2025-02-07 16:58:39,147 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 [2025-02-07 16:58:39,240 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-02-07 16:58:39,282 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-02-07 16:58:39,282 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:58:39,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:58:39,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 65 conjuncts are in the unsatisfiable core [2025-02-07 16:58:39,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:58:39,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-07 16:58:39,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2025-02-07 16:58:39,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-07 16:58:39,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:39,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 39 [2025-02-07 16:58:39,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-07 16:58:39,541 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:39,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 32 [2025-02-07 16:58:39,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-07 16:58:39,595 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:39,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 21 [2025-02-07 16:58:39,633 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:39,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-07 16:58:39,672 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:39,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 31 [2025-02-07 16:58:40,238 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:40,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 13 [2025-02-07 16:58:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 14 proven. 142 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 16:58:40,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:58:40,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2025-02-07 16:58:40,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-02-07 16:58:41,026 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 14 proven. 128 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 16:58:41,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663442766] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:58:41,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:58:41,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20, 16] total 58 [2025-02-07 16:58:41,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432816484] [2025-02-07 16:58:41,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:58:41,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-02-07 16:58:41,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:58:41,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-02-07 16:58:41,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=3004, Unknown=0, NotChecked=0, Total=3306 [2025-02-07 16:58:41,029 INFO L87 Difference]: Start difference. First operand 112 states and 120 transitions. Second operand has 58 states, 58 states have (on average 3.7758620689655173) internal successors, (219), 58 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:58:47,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:58:47,369 INFO L93 Difference]: Finished difference Result 428 states and 484 transitions. [2025-02-07 16:58:47,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2025-02-07 16:58:47,370 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.7758620689655173) internal successors, (219), 58 states have internal predecessors, (219), 0 states have call successors, (0), 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 80 [2025-02-07 16:58:47,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:58:47,371 INFO L225 Difference]: With dead ends: 428 [2025-02-07 16:58:47,371 INFO L226 Difference]: Without dead ends: 370 [2025-02-07 16:58:47,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 131 SyntacticMatches, 5 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11009 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=3209, Invalid=30097, Unknown=0, NotChecked=0, Total=33306 [2025-02-07 16:58:47,375 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 1053 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 3719 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 4226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 3719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-02-07 16:58:47,375 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 467 Invalid, 4226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 3719 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-02-07 16:58:47,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2025-02-07 16:58:47,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 133. [2025-02-07 16:58:47,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.0984848484848484) internal successors, (145), 132 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:58:47,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 145 transitions. [2025-02-07 16:58:47,395 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 145 transitions. Word has length 80 [2025-02-07 16:58:47,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:58:47,395 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 145 transitions. [2025-02-07 16:58:47,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.7758620689655173) internal successors, (219), 58 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:58:47,395 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 145 transitions. [2025-02-07 16:58:47,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-02-07 16:58:47,396 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:58:47,396 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:58:47,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-07 16:58:47,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:58:47,596 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:58:47,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:58:47,597 INFO L85 PathProgramCache]: Analyzing trace with hash -184100354, now seen corresponding path program 9 times [2025-02-07 16:58:47,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:58:47,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111213896] [2025-02-07 16:58:47,597 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:58:47,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:58:47,610 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 85 statements into 9 equivalence classes. [2025-02-07 16:58:47,659 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 85 of 85 statements. [2025-02-07 16:58:47,659 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-02-07 16:58:47,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:58:48,926 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 16 proven. 171 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-07 16:58:48,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:58:48,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111213896] [2025-02-07 16:58:48,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111213896] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:58:48,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327055020] [2025-02-07 16:58:48,927 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:58:48,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:58:48,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:58:48,929 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) [2025-02-07 16:58:48,931 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 [2025-02-07 16:58:49,056 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 85 statements into 9 equivalence classes. [2025-02-07 16:58:50,675 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 85 of 85 statements. [2025-02-07 16:58:50,675 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-02-07 16:58:50,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:58:50,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-02-07 16:58:50,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:58:50,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-07 16:58:50,896 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:50,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 39 [2025-02-07 16:58:50,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-07 16:58:50,998 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:50,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 28 [2025-02-07 16:58:51,042 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:51,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-07 16:58:51,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:51,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 31 [2025-02-07 16:58:51,780 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:58:51,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 13 [2025-02-07 16:58:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 16 proven. 170 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-07 16:58:51,785 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:59:00,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2025-02-07 16:59:00,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-02-07 16:59:01,102 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 16 proven. 165 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 16:59:01,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327055020] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:59:01,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:59:01,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 17] total 50 [2025-02-07 16:59:01,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748979233] [2025-02-07 16:59:01,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:59:01,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-02-07 16:59:01,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:01,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-02-07 16:59:01,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2247, Unknown=0, NotChecked=0, Total=2450 [2025-02-07 16:59:01,104 INFO L87 Difference]: Start difference. First operand 133 states and 145 transitions. Second operand has 50 states, 50 states have (on average 4.48) internal successors, (224), 50 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:04,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:04,190 INFO L93 Difference]: Finished difference Result 252 states and 294 transitions. [2025-02-07 16:59:04,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-02-07 16:59:04,190 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.48) internal successors, (224), 50 states have internal predecessors, (224), 0 states have call successors, (0), 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 85 [2025-02-07 16:59:04,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:04,191 INFO L225 Difference]: With dead ends: 252 [2025-02-07 16:59:04,191 INFO L226 Difference]: Without dead ends: 243 [2025-02-07 16:59:04,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 142 SyntacticMatches, 3 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2369 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=978, Invalid=8724, Unknown=0, NotChecked=0, Total=9702 [2025-02-07 16:59:04,192 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 453 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 4036 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 4230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 4036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-07 16:59:04,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 547 Invalid, 4230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 4036 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-07 16:59:04,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2025-02-07 16:59:04,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 138. [2025-02-07 16:59:04,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.094890510948905) internal successors, (150), 137 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) [2025-02-07 16:59:04,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 150 transitions. [2025-02-07 16:59:04,215 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 150 transitions. Word has length 85 [2025-02-07 16:59:04,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:04,215 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 150 transitions. [2025-02-07 16:59:04,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.48) internal successors, (224), 50 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:04,215 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 150 transitions. [2025-02-07 16:59:04,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-02-07 16:59:04,216 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:04,216 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:59:04,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-07 16:59:04,416 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,SelfDestructingSolverStorable13 [2025-02-07 16:59:04,417 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:04,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:04,417 INFO L85 PathProgramCache]: Analyzing trace with hash 35215022, now seen corresponding path program 10 times [2025-02-07 16:59:04,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:04,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869475773] [2025-02-07 16:59:04,417 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:59:04,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:04,436 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 90 statements into 2 equivalence classes. [2025-02-07 16:59:04,466 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 90 of 90 statements. [2025-02-07 16:59:04,466 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:59:04,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-07 16:59:05,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:05,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869475773] [2025-02-07 16:59:05,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869475773] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:59:05,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596810751] [2025-02-07 16:59:05,145 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:59:05,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:59:05,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:59:05,147 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) [2025-02-07 16:59:05,151 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 [2025-02-07 16:59:05,274 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 90 statements into 2 equivalence classes. [2025-02-07 16:59:05,330 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 90 of 90 statements. [2025-02-07 16:59:05,331 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:59:05,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:05,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-02-07 16:59:05,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:59:05,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-07 16:59:05,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2025-02-07 16:59:05,913 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-07 16:59:05,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:59:06,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2025-02-07 16:59:06,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2025-02-07 16:59:06,037 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-07 16:59:06,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596810751] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:59:06,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:59:06,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 18] total 36 [2025-02-07 16:59:06,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033215113] [2025-02-07 16:59:06,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:59:06,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-07 16:59:06,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:06,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-07 16:59:06,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2025-02-07 16:59:06,038 INFO L87 Difference]: Start difference. First operand 138 states and 150 transitions. Second operand has 36 states, 36 states have (on average 4.555555555555555) internal successors, (164), 36 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) [2025-02-07 16:59:07,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:07,329 INFO L93 Difference]: Finished difference Result 202 states and 223 transitions. [2025-02-07 16:59:07,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-02-07 16:59:07,330 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.555555555555555) internal successors, (164), 36 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) Word has length 90 [2025-02-07 16:59:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:07,331 INFO L225 Difference]: With dead ends: 202 [2025-02-07 16:59:07,331 INFO L226 Difference]: Without dead ends: 200 [2025-02-07 16:59:07,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1486 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=558, Invalid=4992, Unknown=0, NotChecked=0, Total=5550 [2025-02-07 16:59:07,332 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 113 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-07 16:59:07,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 276 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-07 16:59:07,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2025-02-07 16:59:07,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 143. [2025-02-07 16:59:07,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0985915492957747) internal successors, (156), 142 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) [2025-02-07 16:59:07,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 156 transitions. [2025-02-07 16:59:07,363 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 156 transitions. Word has length 90 [2025-02-07 16:59:07,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:07,363 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 156 transitions. [2025-02-07 16:59:07,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.555555555555555) internal successors, (164), 36 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) [2025-02-07 16:59:07,363 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 156 transitions. [2025-02-07 16:59:07,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-02-07 16:59:07,363 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:07,363 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:59:07,371 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 [2025-02-07 16:59:07,564 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,SelfDestructingSolverStorable14 [2025-02-07 16:59:07,564 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:07,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:07,565 INFO L85 PathProgramCache]: Analyzing trace with hash -2126194435, now seen corresponding path program 11 times [2025-02-07 16:59:07,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:07,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752224793] [2025-02-07 16:59:07,565 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 16:59:07,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:07,579 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 95 statements into 11 equivalence classes. [2025-02-07 16:59:07,599 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 95 of 95 statements. [2025-02-07 16:59:07,599 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-07 16:59:07,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat