./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/pr4.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/pr4.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 14a75e050103eb09182e049a798a738dec478e3acaa4fb01ae8649b715b8362f --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 16:59:37,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 16:59:37,224 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 16:59:37,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 16:59:37,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 16:59:37,242 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 16:59:37,243 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 16:59:37,243 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 16:59:37,243 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 16:59:37,243 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 16:59:37,243 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 16:59:37,243 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 16:59:37,244 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 16:59:37,244 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 16:59:37,244 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 16:59:37,244 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 16:59:37,244 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 16:59:37,244 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 16:59:37,244 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 16:59:37,244 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 16:59:37,244 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 16:59:37,244 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 16:59:37,244 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 16:59:37,245 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 16:59:37,245 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 16:59:37,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 16:59:37,245 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 16:59:37,245 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 16:59:37,245 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 16:59:37,245 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 16:59:37,245 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 16:59:37,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 16:59:37,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 16:59:37,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 16:59:37,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 16:59:37,246 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 16:59:37,246 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 16:59:37,246 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 16:59:37,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 16:59:37,246 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 16:59:37,246 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 16:59:37,246 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 16:59:37,246 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 16:59:37,246 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 -> 14a75e050103eb09182e049a798a738dec478e3acaa4fb01ae8649b715b8362f [2025-02-07 16:59:37,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 16:59:37,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 16:59:37,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 16:59:37,494 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 16:59:37,495 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 16:59:37,495 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/pr4.c [2025-02-07 16:59:38,625 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8576c84ed/d69d46f9bf6347f29658d437f8e47d08/FLAG3348b8ed3 [2025-02-07 16:59:38,868 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 16:59:38,868 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-tiling/pr4.c [2025-02-07 16:59:38,873 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8576c84ed/d69d46f9bf6347f29658d437f8e47d08/FLAG3348b8ed3 [2025-02-07 16:59:39,199 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8576c84ed/d69d46f9bf6347f29658d437f8e47d08 [2025-02-07 16:59:39,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 16:59:39,201 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 16:59:39,202 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 16:59:39,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 16:59:39,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 16:59:39,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 04:59:39" (1/1) ... [2025-02-07 16:59:39,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c7fe49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:59:39, skipping insertion in model container [2025-02-07 16:59:39,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 04:59:39" (1/1) ... [2025-02-07 16:59:39,214 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 16:59:39,329 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/pr4.c[394,407] [2025-02-07 16:59:39,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 16:59:39,353 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 16:59:39,359 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/pr4.c[394,407] [2025-02-07 16:59:39,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 16:59:39,372 INFO L204 MainTranslator]: Completed translation [2025-02-07 16:59:39,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:59:39 WrapperNode [2025-02-07 16:59:39,373 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 16:59:39,373 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 16:59:39,374 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 16:59:39,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 16:59:39,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:59:39" (1/1) ... [2025-02-07 16:59:39,381 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:59:39" (1/1) ... [2025-02-07 16:59:39,394 INFO L138 Inliner]: procedures = 15, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2025-02-07 16:59:39,394 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 16:59:39,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 16:59:39,395 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 16:59:39,395 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 16:59:39,400 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:59:39" (1/1) ... [2025-02-07 16:59:39,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:59:39" (1/1) ... [2025-02-07 16:59:39,401 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:59:39" (1/1) ... [2025-02-07 16:59:39,411 INFO L175 MemorySlicer]: Split 18 memory accesses to 3 slices as follows [2, 6, 10]. 56 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 8 writes are split as follows [0, 0, 8]. [2025-02-07 16:59:39,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:59:39" (1/1) ... [2025-02-07 16:59:39,411 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:59:39" (1/1) ... [2025-02-07 16:59:39,417 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:59:39" (1/1) ... [2025-02-07 16:59:39,418 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:59:39" (1/1) ... [2025-02-07 16:59:39,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:59:39" (1/1) ... [2025-02-07 16:59:39,419 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:59:39" (1/1) ... [2025-02-07 16:59:39,420 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 16:59:39,423 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 16:59:39,424 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 16:59:39,424 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 16:59:39,425 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:59:39" (1/1) ... [2025-02-07 16:59:39,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 16:59:39,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:59:39,454 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 16:59:39,461 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 16:59:39,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 16:59:39,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 16:59:39,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 16:59:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-07 16:59:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-07 16:59:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-07 16:59:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-07 16:59:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-07 16:59:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 16:59:39,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 16:59:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-07 16:59:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-07 16:59:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-07 16:59:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-07 16:59:39,527 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 16:59:39,528 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 16:59:39,650 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2025-02-07 16:59:39,651 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 16:59:39,659 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 16:59:39,659 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 16:59:39,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 04:59:39 BoogieIcfgContainer [2025-02-07 16:59:39,660 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 16:59:39,661 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 16:59:39,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 16:59:39,664 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 16:59:39,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 04:59:39" (1/3) ... [2025-02-07 16:59:39,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b1f212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 04:59:39, skipping insertion in model container [2025-02-07 16:59:39,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:59:39" (2/3) ... [2025-02-07 16:59:39,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b1f212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 04:59:39, skipping insertion in model container [2025-02-07 16:59:39,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 04:59:39" (3/3) ... [2025-02-07 16:59:39,666 INFO L128 eAbstractionObserver]: Analyzing ICFG pr4.c [2025-02-07 16:59:39,675 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 16:59:39,676 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pr4.c that has 1 procedures, 22 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-07 16:59:39,708 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 16:59:39,715 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;@52efd904, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 16:59:39,715 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 16:59:39,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 19 states have (on average 1.631578947368421) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:39,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-07 16:59:39,721 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:39,721 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:59:39,721 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:39,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:39,724 INFO L85 PathProgramCache]: Analyzing trace with hash 83749274, now seen corresponding path program 1 times [2025-02-07 16:59:39,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:39,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483807798] [2025-02-07 16:59:39,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:39,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:39,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-07 16:59:39,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-07 16:59:39,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:39,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:39,846 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 16:59:39,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:39,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483807798] [2025-02-07 16:59:39,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483807798] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:59:39,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:59:39,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 16:59:39,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589328943] [2025-02-07 16:59:39,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:59:39,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 16:59:39,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:39,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 16:59:39,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 16:59:39,874 INFO L87 Difference]: Start difference. First operand has 22 states, 19 states have (on average 1.631578947368421) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 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 16:59:39,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:39,881 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2025-02-07 16:59:39,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 16:59:39,882 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2025-02-07 16:59:39,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:39,885 INFO L225 Difference]: With dead ends: 39 [2025-02-07 16:59:39,885 INFO L226 Difference]: Without dead ends: 18 [2025-02-07 16:59:39,887 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 16:59:39,888 INFO L435 NwaCegarLoop]: 29 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, 29 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 16:59:39,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:59:39,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-02-07 16:59:39,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-02-07 16:59:39,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:39,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2025-02-07 16:59:39,910 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 11 [2025-02-07 16:59:39,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:39,910 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2025-02-07 16:59:39,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 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 16:59:39,911 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2025-02-07 16:59:39,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-07 16:59:39,912 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:39,912 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:59:39,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 16:59:39,912 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:39,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:39,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1826559609, now seen corresponding path program 1 times [2025-02-07 16:59:39,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:39,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114033973] [2025-02-07 16:59:39,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:39,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:39,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-07 16:59:39,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-07 16:59:39,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:39,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:40,111 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 16:59:40,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:40,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114033973] [2025-02-07 16:59:40,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114033973] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:59:40,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:59:40,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 16:59:40,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389069287] [2025-02-07 16:59:40,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:59:40,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 16:59:40,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:40,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 16:59:40,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-07 16:59:40,113 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 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 16:59:40,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:40,168 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2025-02-07 16:59:40,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 16:59:40,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2025-02-07 16:59:40,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:40,170 INFO L225 Difference]: With dead ends: 31 [2025-02-07 16:59:40,172 INFO L226 Difference]: Without dead ends: 24 [2025-02-07 16:59:40,172 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 16:59:40,173 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:59:40,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 17 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:59:40,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-02-07 16:59:40,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2025-02-07 16:59:40,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2025-02-07 16:59:40,179 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 11 [2025-02-07 16:59:40,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:40,179 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2025-02-07 16:59:40,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 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 16:59:40,180 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2025-02-07 16:59:40,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-07 16:59:40,180 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:40,180 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:59:40,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-07 16:59:40,180 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:40,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:40,180 INFO L85 PathProgramCache]: Analyzing trace with hash 588345365, now seen corresponding path program 1 times [2025-02-07 16:59:40,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:40,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430952847] [2025-02-07 16:59:40,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:40,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:40,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-07 16:59:40,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-07 16:59:40,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:40,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:40,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:40,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430952847] [2025-02-07 16:59:40,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430952847] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:59:40,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:59:40,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 16:59:40,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618203417] [2025-02-07 16:59:40,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:59:40,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 16:59:40,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:40,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 16:59:40,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 16:59:40,320 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:40,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:40,363 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2025-02-07 16:59:40,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 16:59:40,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-02-07 16:59:40,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:40,365 INFO L225 Difference]: With dead ends: 45 [2025-02-07 16:59:40,365 INFO L226 Difference]: Without dead ends: 32 [2025-02-07 16:59:40,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-07 16:59:40,366 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 43 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:59:40,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 33 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:59:40,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-02-07 16:59:40,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2025-02-07 16:59:40,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:40,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2025-02-07 16:59:40,372 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 17 [2025-02-07 16:59:40,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:40,372 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2025-02-07 16:59:40,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:40,372 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2025-02-07 16:59:40,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-07 16:59:40,374 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:40,374 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:59:40,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-07 16:59:40,374 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:40,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:40,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1963811596, now seen corresponding path program 1 times [2025-02-07 16:59:40,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:40,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782127574] [2025-02-07 16:59:40,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:40,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:40,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-07 16:59:40,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-07 16:59:40,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:40,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:40,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:40,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:40,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782127574] [2025-02-07 16:59:40,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782127574] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:59:40,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118097548] [2025-02-07 16:59:40,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:40,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:59:40,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:59:40,841 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 16:59:40,842 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 16:59:40,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-07 16:59:40,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-07 16:59:40,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:40,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:40,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-07 16:59:40,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:59:40,963 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 16:59:40,992 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 16:59:41,007 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 16:59:41,046 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:59:41,046 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 30 treesize of output 21 [2025-02-07 16:59:41,121 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:59:41,122 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 16:59:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:41,133 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:59:41,197 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 16:59:41,200 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 14 [2025-02-07 16:59:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:41,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118097548] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:59:41,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:59:41,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 18 [2025-02-07 16:59:41,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055859178] [2025-02-07 16:59:41,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:59:41,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-07 16:59:41,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:41,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-07 16:59:41,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2025-02-07 16:59:41,214 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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 16:59:41,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:41,636 INFO L93 Difference]: Finished difference Result 124 states and 169 transitions. [2025-02-07 16:59:41,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-07 16:59:41,636 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-02-07 16:59:41,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:41,637 INFO L225 Difference]: With dead ends: 124 [2025-02-07 16:59:41,637 INFO L226 Difference]: Without dead ends: 105 [2025-02-07 16:59:41,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=260, Invalid=796, Unknown=0, NotChecked=0, Total=1056 [2025-02-07 16:59:41,638 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 297 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 16:59:41,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 70 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 16:59:41,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-02-07 16:59:41,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 40. [2025-02-07 16:59:41,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.435897435897436) internal successors, (56), 39 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:41,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 56 transitions. [2025-02-07 16:59:41,648 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 56 transitions. Word has length 17 [2025-02-07 16:59:41,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:41,648 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 56 transitions. [2025-02-07 16:59:41,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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 16:59:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 56 transitions. [2025-02-07 16:59:41,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-07 16:59:41,649 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:41,649 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:59:41,658 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 16:59:41,850 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 16:59:41,850 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:41,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:41,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1963781805, now seen corresponding path program 1 times [2025-02-07 16:59:41,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:41,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239803243] [2025-02-07 16:59:41,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:41,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:41,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-07 16:59:41,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-07 16:59:41,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:41,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:41,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 16:59:41,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:41,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239803243] [2025-02-07 16:59:41,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239803243] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:59:41,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:59:41,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 16:59:41,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237998813] [2025-02-07 16:59:41,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:59:41,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 16:59:41,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:41,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 16:59:41,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 16:59:41,924 INFO L87 Difference]: Start difference. First operand 40 states and 56 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:41,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:41,937 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2025-02-07 16:59:41,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 16:59:41,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-02-07 16:59:41,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:41,938 INFO L225 Difference]: With dead ends: 44 [2025-02-07 16:59:41,938 INFO L226 Difference]: Without dead ends: 42 [2025-02-07 16:59:41,938 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 16:59:41,939 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 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 16:59:41,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:59:41,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-02-07 16:59:41,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2025-02-07 16:59:41,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 41 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:41,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 58 transitions. [2025-02-07 16:59:41,943 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 58 transitions. Word has length 17 [2025-02-07 16:59:41,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:41,944 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 58 transitions. [2025-02-07 16:59:41,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:41,944 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 58 transitions. [2025-02-07 16:59:41,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-07 16:59:41,944 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:41,945 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:59:41,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-07 16:59:41,945 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:41,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:41,945 INFO L85 PathProgramCache]: Analyzing trace with hash 534204341, now seen corresponding path program 1 times [2025-02-07 16:59:41,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:41,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540509942] [2025-02-07 16:59:41,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:41,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:41,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-07 16:59:41,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-07 16:59:41,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:41,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:42,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:42,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:42,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540509942] [2025-02-07 16:59:42,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540509942] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:59:42,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106320545] [2025-02-07 16:59:42,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:42,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:59:42,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:59:42,194 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 16:59:42,202 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 16:59:42,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-07 16:59:42,256 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-07 16:59:42,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:42,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:42,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-07 16:59:42,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:59:42,278 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 16:59:42,295 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 16:59:42,303 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 16:59:42,330 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:59:42,331 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 30 treesize of output 21 [2025-02-07 16:59:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:42,384 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:59:42,434 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 15 treesize of output 13 [2025-02-07 16:59:42,436 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 14 treesize of output 12 [2025-02-07 16:59:42,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:42,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106320545] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:59:42,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:59:42,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 16 [2025-02-07 16:59:42,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900409720] [2025-02-07 16:59:42,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:59:42,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-07 16:59:42,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:42,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-07 16:59:42,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2025-02-07 16:59:42,449 INFO L87 Difference]: Start difference. First operand 42 states and 58 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 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 16:59:42,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:42,882 INFO L93 Difference]: Finished difference Result 142 states and 191 transitions. [2025-02-07 16:59:42,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-07 16:59:42,882 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-02-07 16:59:42,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:42,884 INFO L225 Difference]: With dead ends: 142 [2025-02-07 16:59:42,885 INFO L226 Difference]: Without dead ends: 140 [2025-02-07 16:59:42,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=271, Invalid=919, Unknown=0, NotChecked=0, Total=1190 [2025-02-07 16:59:42,886 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 122 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 16:59:42,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 104 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 16:59:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2025-02-07 16:59:42,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 76. [2025-02-07 16:59:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.4533333333333334) internal successors, (109), 75 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 16:59:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 109 transitions. [2025-02-07 16:59:42,899 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 109 transitions. Word has length 17 [2025-02-07 16:59:42,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:42,899 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 109 transitions. [2025-02-07 16:59:42,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 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 16:59:42,899 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 109 transitions. [2025-02-07 16:59:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-07 16:59:42,901 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:42,901 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:59:42,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-07 16:59:43,106 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 16:59:43,108 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:43,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:43,108 INFO L85 PathProgramCache]: Analyzing trace with hash 385809784, now seen corresponding path program 1 times [2025-02-07 16:59:43,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:43,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400566477] [2025-02-07 16:59:43,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:43,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:43,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-07 16:59:43,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-07 16:59:43,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:43,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:43,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:43,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400566477] [2025-02-07 16:59:43,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400566477] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:59:43,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708557044] [2025-02-07 16:59:43,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:43,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:59:43,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:59:43,401 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 16:59:43,407 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 16:59:43,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-07 16:59:43,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-07 16:59:43,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:43,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:43,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-07 16:59:43,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:59:43,513 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 16:59:43,534 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 16:59:43,562 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:59:43,562 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 30 treesize of output 21 [2025-02-07 16:59:43,675 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:59:43,675 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 16:59:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:43,697 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:59:43,756 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 16:59:43,762 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 16:59:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:43,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708557044] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:59:43,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:59:43,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2025-02-07 16:59:43,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097716338] [2025-02-07 16:59:43,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:59:43,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-07 16:59:43,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:43,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-07 16:59:43,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2025-02-07 16:59:43,819 INFO L87 Difference]: Start difference. First operand 76 states and 109 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 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 16:59:44,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:44,619 INFO L93 Difference]: Finished difference Result 285 states and 391 transitions. [2025-02-07 16:59:44,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-07 16:59:44,619 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-02-07 16:59:44,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:44,620 INFO L225 Difference]: With dead ends: 285 [2025-02-07 16:59:44,620 INFO L226 Difference]: Without dead ends: 257 [2025-02-07 16:59:44,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=510, Invalid=2040, Unknown=0, NotChecked=0, Total=2550 [2025-02-07 16:59:44,622 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 291 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 16:59:44,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 148 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 16:59:44,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2025-02-07 16:59:44,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 145. [2025-02-07 16:59:44,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.4583333333333333) internal successors, (210), 144 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 16:59:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 210 transitions. [2025-02-07 16:59:44,633 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 210 transitions. Word has length 22 [2025-02-07 16:59:44,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:44,634 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 210 transitions. [2025-02-07 16:59:44,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 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 16:59:44,634 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 210 transitions. [2025-02-07 16:59:44,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-07 16:59:44,635 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:44,635 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:59:44,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-07 16:59:44,835 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 16:59:44,835 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:44,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:44,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1104685417, now seen corresponding path program 1 times [2025-02-07 16:59:44,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:44,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044687567] [2025-02-07 16:59:44,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:44,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:44,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-07 16:59:44,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-07 16:59:44,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:44,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:45,068 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 16:59:45,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:45,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044687567] [2025-02-07 16:59:45,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044687567] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:59:45,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61501919] [2025-02-07 16:59:45,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:45,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:59:45,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:59:45,070 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 16:59:45,072 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 16:59:45,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-07 16:59:45,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-07 16:59:45,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:45,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:45,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-07 16:59:45,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:59:45,133 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 16:59:45,141 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 16:59:45,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:59:45,162 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 30 treesize of output 21 [2025-02-07 16:59:45,247 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 16:59:45,248 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:59:45,298 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 16:59:45,300 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 16:59:45,310 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 16:59:45,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61501919] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:59:45,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:59:45,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 17 [2025-02-07 16:59:45,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419546589] [2025-02-07 16:59:45,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:59:45,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-07 16:59:45,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:45,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-07 16:59:45,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2025-02-07 16:59:45,313 INFO L87 Difference]: Start difference. First operand 145 states and 210 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 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 16:59:45,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:45,684 INFO L93 Difference]: Finished difference Result 303 states and 416 transitions. [2025-02-07 16:59:45,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-07 16:59:45,684 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-02-07 16:59:45,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:45,685 INFO L225 Difference]: With dead ends: 303 [2025-02-07 16:59:45,686 INFO L226 Difference]: Without dead ends: 301 [2025-02-07 16:59:45,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=984, Unknown=0, NotChecked=0, Total=1260 [2025-02-07 16:59:45,687 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 130 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 16:59:45,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 95 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 16:59:45,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2025-02-07 16:59:45,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 192. [2025-02-07 16:59:45,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.4816753926701571) internal successors, (283), 191 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:45,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 283 transitions. [2025-02-07 16:59:45,725 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 283 transitions. Word has length 22 [2025-02-07 16:59:45,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:45,725 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 283 transitions. [2025-02-07 16:59:45,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 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 16:59:45,725 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 283 transitions. [2025-02-07 16:59:45,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-07 16:59:45,726 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:45,726 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:59:45,734 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 16:59:45,930 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 16:59:45,930 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:45,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:45,931 INFO L85 PathProgramCache]: Analyzing trace with hash -854460112, now seen corresponding path program 1 times [2025-02-07 16:59:45,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:45,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846718225] [2025-02-07 16:59:45,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:45,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:45,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-07 16:59:45,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-07 16:59:45,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:45,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:45,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:45,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846718225] [2025-02-07 16:59:45,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846718225] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:59:45,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:59:45,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 16:59:45,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137737587] [2025-02-07 16:59:45,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:59:45,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 16:59:45,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:45,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 16:59:45,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:59:45,953 INFO L87 Difference]: Start difference. First operand 192 states and 283 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:45,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:45,977 INFO L93 Difference]: Finished difference Result 234 states and 331 transitions. [2025-02-07 16:59:45,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 16:59:45,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-02-07 16:59:45,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:45,978 INFO L225 Difference]: With dead ends: 234 [2025-02-07 16:59:45,978 INFO L226 Difference]: Without dead ends: 156 [2025-02-07 16:59:45,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:59:45,978 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:59:45,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 45 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:59:45,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-02-07 16:59:45,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2025-02-07 16:59:45,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.3687943262411348) internal successors, (193), 141 states have internal predecessors, (193), 0 states have call successors, (0), 0 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 16:59:45,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 193 transitions. [2025-02-07 16:59:45,987 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 193 transitions. Word has length 23 [2025-02-07 16:59:45,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:45,988 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 193 transitions. [2025-02-07 16:59:45,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:45,988 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 193 transitions. [2025-02-07 16:59:45,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-07 16:59:45,989 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:45,989 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] [2025-02-07 16:59:45,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-07 16:59:45,989 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:45,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:45,989 INFO L85 PathProgramCache]: Analyzing trace with hash -454144140, now seen corresponding path program 2 times [2025-02-07 16:59:45,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:45,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334976414] [2025-02-07 16:59:45,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:59:45,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:45,998 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-07 16:59:46,009 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-07 16:59:46,010 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:59:46,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:46,202 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:46,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:46,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334976414] [2025-02-07 16:59:46,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334976414] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:59:46,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852750520] [2025-02-07 16:59:46,203 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:59:46,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:59:46,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:59:46,204 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 16:59:46,206 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 16:59:46,246 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-07 16:59:46,258 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-07 16:59:46,259 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:59:46,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:46,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-07 16:59:46,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:59:46,298 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 16:59:46,325 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 16:59:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:46,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:59:46,565 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 16:59:46,567 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 16:59:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:46,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852750520] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:59:46,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:59:46,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 22 [2025-02-07 16:59:46,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766264779] [2025-02-07 16:59:46,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:59:46,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-07 16:59:46,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:46,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-07 16:59:46,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2025-02-07 16:59:46,575 INFO L87 Difference]: Start difference. First operand 142 states and 193 transitions. Second operand has 22 states, 22 states have (on average 2.772727272727273) internal successors, (61), 22 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:47,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:47,047 INFO L93 Difference]: Finished difference Result 316 states and 412 transitions. [2025-02-07 16:59:47,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-07 16:59:47,047 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.772727272727273) internal successors, (61), 22 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-02-07 16:59:47,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:47,048 INFO L225 Difference]: With dead ends: 316 [2025-02-07 16:59:47,048 INFO L226 Difference]: Without dead ends: 314 [2025-02-07 16:59:47,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=1479, Unknown=0, NotChecked=0, Total=1806 [2025-02-07 16:59:47,050 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 85 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 16:59:47,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 110 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 16:59:47,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2025-02-07 16:59:47,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 144. [2025-02-07 16:59:47,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.3636363636363635) internal successors, (195), 143 states have internal predecessors, (195), 0 states have call successors, (0), 0 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 16:59:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 195 transitions. [2025-02-07 16:59:47,058 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 195 transitions. Word has length 27 [2025-02-07 16:59:47,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:47,059 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 195 transitions. [2025-02-07 16:59:47,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.772727272727273) internal successors, (61), 22 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 195 transitions. [2025-02-07 16:59:47,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-07 16:59:47,059 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:47,059 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] [2025-02-07 16:59:47,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-07 16:59:47,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-07 16:59:47,264 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:47,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:47,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1387400084, now seen corresponding path program 1 times [2025-02-07 16:59:47,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:47,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381177154] [2025-02-07 16:59:47,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:47,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:47,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-07 16:59:47,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-07 16:59:47,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:47,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:47,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:47,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381177154] [2025-02-07 16:59:47,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381177154] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:59:47,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934708917] [2025-02-07 16:59:47,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:47,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:59:47,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:59:47,483 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 16:59:47,488 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 16:59:47,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-07 16:59:47,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-07 16:59:47,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:47,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:47,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-07 16:59:47,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:59:47,580 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 16:59:47,600 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 16:59:47,693 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 15 treesize of output 7 [2025-02-07 16:59:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:47,696 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:59:47,778 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 16:59:47,780 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 18 treesize of output 14 [2025-02-07 16:59:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:47,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934708917] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:59:47,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:59:47,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 22 [2025-02-07 16:59:47,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946196684] [2025-02-07 16:59:47,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:59:47,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-07 16:59:47,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:47,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-07 16:59:47,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2025-02-07 16:59:47,802 INFO L87 Difference]: Start difference. First operand 144 states and 195 transitions. Second operand has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:48,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:48,767 INFO L93 Difference]: Finished difference Result 528 states and 736 transitions. [2025-02-07 16:59:48,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-07 16:59:48,768 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-02-07 16:59:48,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:48,770 INFO L225 Difference]: With dead ends: 528 [2025-02-07 16:59:48,770 INFO L226 Difference]: Without dead ends: 443 [2025-02-07 16:59:48,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=578, Invalid=2392, Unknown=0, NotChecked=0, Total=2970 [2025-02-07 16:59:48,771 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 243 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-07 16:59:48,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 172 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-07 16:59:48,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2025-02-07 16:59:48,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 232. [2025-02-07 16:59:48,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.3722943722943723) internal successors, (317), 231 states have internal predecessors, (317), 0 states have call successors, (0), 0 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 16:59:48,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 317 transitions. [2025-02-07 16:59:48,791 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 317 transitions. Word has length 27 [2025-02-07 16:59:48,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:48,792 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 317 transitions. [2025-02-07 16:59:48,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:48,792 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 317 transitions. [2025-02-07 16:59:48,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-07 16:59:48,793 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:48,793 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:59:48,802 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 16:59:48,993 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,SelfDestructingSolverStorable10 [2025-02-07 16:59:48,994 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:48,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:48,994 INFO L85 PathProgramCache]: Analyzing trace with hash 35950110, now seen corresponding path program 1 times [2025-02-07 16:59:48,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:48,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365810013] [2025-02-07 16:59:48,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:48,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:49,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-07 16:59:49,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-07 16:59:49,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:49,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 16:59:49,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:49,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365810013] [2025-02-07 16:59:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365810013] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:59:49,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:59:49,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 16:59:49,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546242235] [2025-02-07 16:59:49,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:59:49,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 16:59:49,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:49,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 16:59:49,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:59:49,045 INFO L87 Difference]: Start difference. First operand 232 states and 317 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:49,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:49,106 INFO L93 Difference]: Finished difference Result 318 states and 426 transitions. [2025-02-07 16:59:49,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 16:59:49,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-02-07 16:59:49,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:49,110 INFO L225 Difference]: With dead ends: 318 [2025-02-07 16:59:49,110 INFO L226 Difference]: Without dead ends: 229 [2025-02-07 16:59:49,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:59:49,111 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:59:49,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 33 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:59:49,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2025-02-07 16:59:49,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 208. [2025-02-07 16:59:49,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.3043478260869565) internal successors, (270), 207 states have internal predecessors, (270), 0 states have call successors, (0), 0 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 16:59:49,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 270 transitions. [2025-02-07 16:59:49,135 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 270 transitions. Word has length 28 [2025-02-07 16:59:49,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:49,135 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 270 transitions. [2025-02-07 16:59:49,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:49,135 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 270 transitions. [2025-02-07 16:59:49,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-07 16:59:49,135 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:49,135 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:59:49,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-07 16:59:49,136 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:49,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:49,136 INFO L85 PathProgramCache]: Analyzing trace with hash 241322779, now seen corresponding path program 1 times [2025-02-07 16:59:49,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:49,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491387722] [2025-02-07 16:59:49,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:49,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:49,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-07 16:59:49,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-07 16:59:49,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:49,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:49,161 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 16:59:49,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:49,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491387722] [2025-02-07 16:59:49,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491387722] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:59:49,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:59:49,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 16:59:49,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480648766] [2025-02-07 16:59:49,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:59:49,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 16:59:49,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:49,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 16:59:49,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:59:49,163 INFO L87 Difference]: Start difference. First operand 208 states and 270 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:49,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:49,190 INFO L93 Difference]: Finished difference Result 248 states and 315 transitions. [2025-02-07 16:59:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 16:59:49,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-02-07 16:59:49,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:49,191 INFO L225 Difference]: With dead ends: 248 [2025-02-07 16:59:49,191 INFO L226 Difference]: Without dead ends: 183 [2025-02-07 16:59:49,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:59:49,193 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:59:49,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 47 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:59:49,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-02-07 16:59:49,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 162. [2025-02-07 16:59:49,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.2732919254658386) internal successors, (205), 161 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:49,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 205 transitions. [2025-02-07 16:59:49,205 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 205 transitions. Word has length 28 [2025-02-07 16:59:49,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:49,205 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 205 transitions. [2025-02-07 16:59:49,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:49,205 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 205 transitions. [2025-02-07 16:59:49,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-07 16:59:49,205 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:49,206 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:59:49,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-07 16:59:49,206 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:49,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:49,206 INFO L85 PathProgramCache]: Analyzing trace with hash -961909769, now seen corresponding path program 3 times [2025-02-07 16:59:49,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:49,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331829275] [2025-02-07 16:59:49,207 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:59:49,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:49,212 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 4 equivalence classes. [2025-02-07 16:59:49,230 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 16:59:49,232 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-07 16:59:49,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:49,599 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:49,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:49,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331829275] [2025-02-07 16:59:49,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331829275] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:59:49,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607754417] [2025-02-07 16:59:49,600 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:59:49,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:59:49,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:59:49,603 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 16:59:49,611 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 16:59:49,649 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 4 equivalence classes. [2025-02-07 16:59:49,672 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 16:59:49,672 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-07 16:59:49,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:49,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-07 16:59:49,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:59:49,693 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 13 treesize of output 9 [2025-02-07 16:59:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:49,861 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:59:49,960 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 16:59:49,961 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 16:59:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:49,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607754417] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:59:49,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:59:49,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 27 [2025-02-07 16:59:49,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009125308] [2025-02-07 16:59:49,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:59:49,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-07 16:59:49,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:49,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-07 16:59:49,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2025-02-07 16:59:49,967 INFO L87 Difference]: Start difference. First operand 162 states and 205 transitions. Second operand has 27 states, 27 states have (on average 2.962962962962963) internal successors, (80), 27 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:51,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:51,671 INFO L93 Difference]: Finished difference Result 494 states and 597 transitions. [2025-02-07 16:59:51,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-02-07 16:59:51,671 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.962962962962963) internal successors, (80), 27 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-02-07 16:59:51,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:51,675 INFO L225 Difference]: With dead ends: 494 [2025-02-07 16:59:51,675 INFO L226 Difference]: Without dead ends: 424 [2025-02-07 16:59:51,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2041 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1020, Invalid=6120, Unknown=0, NotChecked=0, Total=7140 [2025-02-07 16:59:51,677 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 210 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-07 16:59:51,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 147 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-07 16:59:51,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2025-02-07 16:59:51,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 277. [2025-02-07 16:59:51,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.2681159420289856) internal successors, (350), 276 states have internal predecessors, (350), 0 states have call successors, (0), 0 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 16:59:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 350 transitions. [2025-02-07 16:59:51,699 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 350 transitions. Word has length 32 [2025-02-07 16:59:51,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:51,699 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 350 transitions. [2025-02-07 16:59:51,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.962962962962963) internal successors, (80), 27 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:51,699 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 350 transitions. [2025-02-07 16:59:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-07 16:59:51,700 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:51,700 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] [2025-02-07 16:59:51,706 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 16:59:51,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:59:51,904 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:51,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:51,905 INFO L85 PathProgramCache]: Analyzing trace with hash 347845336, now seen corresponding path program 2 times [2025-02-07 16:59:51,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:51,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645114975] [2025-02-07 16:59:51,905 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:59:51,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:51,912 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-07 16:59:51,925 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 16:59:51,925 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:59:51,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:52,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:52,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645114975] [2025-02-07 16:59:52,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645114975] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:59:52,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568305986] [2025-02-07 16:59:52,264 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:59:52,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:59:52,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:59:52,266 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 16:59:52,267 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 16:59:52,306 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-07 16:59:52,320 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 16:59:52,320 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:59:52,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:52,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-07 16:59:52,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:59:52,357 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 16:59:52,476 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 15 treesize of output 7 [2025-02-07 16:59:52,486 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:52,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:59:52,586 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 16:59:52,587 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 18 treesize of output 14 [2025-02-07 16:59:52,603 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:52,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568305986] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:59:52,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:59:52,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 26 [2025-02-07 16:59:52,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971430873] [2025-02-07 16:59:52,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:59:52,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-07 16:59:52,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:52,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-07 16:59:52,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2025-02-07 16:59:52,604 INFO L87 Difference]: Start difference. First operand 277 states and 350 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:53,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:53,890 INFO L93 Difference]: Finished difference Result 469 states and 566 transitions. [2025-02-07 16:59:53,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-07 16:59:53,890 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-02-07 16:59:53,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:53,893 INFO L225 Difference]: With dead ends: 469 [2025-02-07 16:59:53,893 INFO L226 Difference]: Without dead ends: 427 [2025-02-07 16:59:53,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1233 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=857, Invalid=4113, Unknown=0, NotChecked=0, Total=4970 [2025-02-07 16:59:53,894 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 263 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-07 16:59:53,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 158 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-07 16:59:53,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2025-02-07 16:59:53,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 295. [2025-02-07 16:59:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.2585034013605443) internal successors, (370), 294 states have internal predecessors, (370), 0 states have call successors, (0), 0 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 16:59:53,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 370 transitions. [2025-02-07 16:59:53,944 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 370 transitions. Word has length 32 [2025-02-07 16:59:53,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:53,944 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 370 transitions. [2025-02-07 16:59:53,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:59:53,944 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 370 transitions. [2025-02-07 16:59:53,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-07 16:59:53,945 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:53,945 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:59:53,953 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 16:59:54,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-07 16:59:54,146 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:54,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:54,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1379246103, now seen corresponding path program 1 times [2025-02-07 16:59:54,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:54,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355475097] [2025-02-07 16:59:54,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:54,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:54,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-07 16:59:54,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-07 16:59:54,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:54,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:54,195 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 16:59:54,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:54,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355475097] [2025-02-07 16:59:54,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355475097] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:59:54,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:59:54,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 16:59:54,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593200000] [2025-02-07 16:59:54,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:59:54,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 16:59:54,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:54,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 16:59:54,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:59:54,197 INFO L87 Difference]: Start difference. First operand 295 states and 370 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 16:59:54,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:54,255 INFO L93 Difference]: Finished difference Result 355 states and 439 transitions. [2025-02-07 16:59:54,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 16:59:54,256 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 39 [2025-02-07 16:59:54,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:54,257 INFO L225 Difference]: With dead ends: 355 [2025-02-07 16:59:54,257 INFO L226 Difference]: Without dead ends: 241 [2025-02-07 16:59:54,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:59:54,258 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:59:54,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:59:54,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2025-02-07 16:59:54,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 227. [2025-02-07 16:59:54,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.2212389380530972) internal successors, (276), 226 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 16:59:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 276 transitions. [2025-02-07 16:59:54,278 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 276 transitions. Word has length 39 [2025-02-07 16:59:54,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:54,278 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 276 transitions. [2025-02-07 16:59:54,278 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 16:59:54,278 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 276 transitions. [2025-02-07 16:59:54,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-07 16:59:54,279 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:54,279 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:59:54,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-07 16:59:54,279 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:54,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:54,280 INFO L85 PathProgramCache]: Analyzing trace with hash 381008911, now seen corresponding path program 4 times [2025-02-07 16:59:54,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:54,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353832246] [2025-02-07 16:59:54,280 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:59:54,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:54,287 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-02-07 16:59:54,299 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-02-07 16:59:54,303 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:59:54,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:54,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:54,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353832246] [2025-02-07 16:59:54,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353832246] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:59:54,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997761521] [2025-02-07 16:59:54,604 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:59:54,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:59:54,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:59:54,609 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 16:59:54,610 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 16:59:54,653 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-02-07 16:59:54,670 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-02-07 16:59:54,670 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:59:54,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:54,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-07 16:59:54,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:59:54,745 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 16:59:54,768 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 16:59:54,775 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 16:59:54,803 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:59:54,803 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 30 treesize of output 21 [2025-02-07 16:59:55,022 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:59:55,023 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 16:59:55,025 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:55,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:59:55,156 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 16:59:55,158 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 16:59:55,216 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:55,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997761521] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:59:55,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:59:55,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 34 [2025-02-07 16:59:55,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932324112] [2025-02-07 16:59:55,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:59:55,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-07 16:59:55,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:55,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-07 16:59:55,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1000, Unknown=0, NotChecked=0, Total=1122 [2025-02-07 16:59:55,218 INFO L87 Difference]: Start difference. First operand 227 states and 276 transitions. Second operand has 34 states, 34 states have (on average 3.5) internal successors, (119), 34 states have internal predecessors, (119), 0 states have call successors, (0), 0 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 16:59:56,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:56,984 INFO L93 Difference]: Finished difference Result 462 states and 541 transitions. [2025-02-07 16:59:56,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2025-02-07 16:59:56,984 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5) internal successors, (119), 34 states have internal predecessors, (119), 0 states have call successors, (0), 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 43 [2025-02-07 16:59:56,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:56,985 INFO L225 Difference]: With dead ends: 462 [2025-02-07 16:59:56,985 INFO L226 Difference]: Without dead ends: 453 [2025-02-07 16:59:56,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2494 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1176, Invalid=8136, Unknown=0, NotChecked=0, Total=9312 [2025-02-07 16:59:56,987 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 397 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-07 16:59:56,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 269 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-07 16:59:56,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2025-02-07 16:59:57,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 269. [2025-02-07 16:59:57,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.1940298507462686) internal successors, (320), 268 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 16:59:57,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 320 transitions. [2025-02-07 16:59:57,019 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 320 transitions. Word has length 43 [2025-02-07 16:59:57,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:57,020 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 320 transitions. [2025-02-07 16:59:57,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5) internal successors, (119), 34 states have internal predecessors, (119), 0 states have call successors, (0), 0 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 16:59:57,020 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 320 transitions. [2025-02-07 16:59:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-07 16:59:57,023 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:57,023 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:59:57,032 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 16:59:57,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:59:57,224 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:57,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:57,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1128581362, now seen corresponding path program 1 times [2025-02-07 16:59:57,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:57,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875240644] [2025-02-07 16:59:57,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:57,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:57,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-07 16:59:57,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-07 16:59:57,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:57,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:57,484 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:57,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:59:57,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875240644] [2025-02-07 16:59:57,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875240644] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:59:57,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627315461] [2025-02-07 16:59:57,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:59:57,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:59:57,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:59:57,490 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 16:59:57,492 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 16:59:57,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-07 16:59:57,556 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-07 16:59:57,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:59:57,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:59:57,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-07 16:59:57,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:59:57,643 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 16:59:57,671 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 16:59:57,679 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 19 treesize of output 18 [2025-02-07 16:59:57,708 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:59:57,708 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 30 treesize of output 21 [2025-02-07 16:59:57,922 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:57,923 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:59:57,992 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 16:59:57,993 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 16:59:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:59:58,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627315461] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:59:58,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:59:58,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 12] total 25 [2025-02-07 16:59:58,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055825286] [2025-02-07 16:59:58,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:59:58,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-07 16:59:58,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:59:58,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-07 16:59:58,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2025-02-07 16:59:58,003 INFO L87 Difference]: Start difference. First operand 269 states and 320 transitions. Second operand has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 0 states have call successors, (0), 0 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 16:59:59,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:59:59,519 INFO L93 Difference]: Finished difference Result 535 states and 616 transitions. [2025-02-07 16:59:59,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2025-02-07 16:59:59,519 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 0 states have call successors, (0), 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 43 [2025-02-07 16:59:59,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:59:59,520 INFO L225 Difference]: With dead ends: 535 [2025-02-07 16:59:59,520 INFO L226 Difference]: Without dead ends: 533 [2025-02-07 16:59:59,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3516 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1198, Invalid=8902, Unknown=0, NotChecked=0, Total=10100 [2025-02-07 16:59:59,523 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 192 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-07 16:59:59,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 217 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-07 16:59:59,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2025-02-07 16:59:59,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 325. [2025-02-07 16:59:59,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.1851851851851851) internal successors, (384), 324 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 16:59:59,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 384 transitions. [2025-02-07 16:59:59,551 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 384 transitions. Word has length 43 [2025-02-07 16:59:59,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:59:59,551 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 384 transitions. [2025-02-07 16:59:59,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 0 states have call successors, (0), 0 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 16:59:59,551 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 384 transitions. [2025-02-07 16:59:59,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-07 16:59:59,552 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:59:59,552 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:59:59,560 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 16:59:59,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-07 16:59:59,756 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:59:59,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:59:59,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2123753667, now seen corresponding path program 5 times [2025-02-07 16:59:59,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:59:59,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455145418] [2025-02-07 16:59:59,757 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 16:59:59,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:59:59,765 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 48 statements into 6 equivalence classes. [2025-02-07 16:59:59,776 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 48 of 48 statements. [2025-02-07 16:59:59,776 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-07 16:59:59,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:00,058 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:00,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:00:00,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455145418] [2025-02-07 17:00:00,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455145418] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:00:00,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304126862] [2025-02-07 17:00:00,059 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 17:00:00,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:00:00,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:00:00,060 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 17:00:00,062 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 17:00:00,109 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 48 statements into 6 equivalence classes. [2025-02-07 17:00:00,150 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 48 of 48 statements. [2025-02-07 17:00:00,150 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-07 17:00:00,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:00,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-07 17:00:00,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:00:00,267 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 17:00:00,289 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 17:00:00,321 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:00:00,321 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 30 treesize of output 21 [2025-02-07 17:00:00,633 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:00:00,633 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 17:00:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:00,644 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:00:00,795 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 17:00:00,796 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 17:00:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:00,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304126862] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:00:00,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:00:00,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 38 [2025-02-07 17:00:00,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251068612] [2025-02-07 17:00:00,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:00:00,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-02-07 17:00:00,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:00:00,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-02-07 17:00:00,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1265, Unknown=0, NotChecked=0, Total=1406 [2025-02-07 17:00:00,883 INFO L87 Difference]: Start difference. First operand 325 states and 384 transitions. Second operand has 38 states, 38 states have (on average 3.526315789473684) internal successors, (134), 38 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 17:00:04,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:00:04,724 INFO L93 Difference]: Finished difference Result 750 states and 874 transitions. [2025-02-07 17:00:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2025-02-07 17:00:04,724 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.526315789473684) internal successors, (134), 38 states have internal predecessors, (134), 0 states have call successors, (0), 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 48 [2025-02-07 17:00:04,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:00:04,726 INFO L225 Difference]: With dead ends: 750 [2025-02-07 17:00:04,726 INFO L226 Difference]: Without dead ends: 736 [2025-02-07 17:00:04,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8100 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2474, Invalid=21088, Unknown=0, NotChecked=0, Total=23562 [2025-02-07 17:00:04,731 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 440 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:00:04,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 388 Invalid, 1976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-07 17:00:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2025-02-07 17:00:04,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 382. [2025-02-07 17:00:04,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.1758530183727034) internal successors, (448), 381 states have internal predecessors, (448), 0 states have call successors, (0), 0 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 17:00:04,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 448 transitions. [2025-02-07 17:00:04,772 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 448 transitions. Word has length 48 [2025-02-07 17:00:04,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:00:04,772 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 448 transitions. [2025-02-07 17:00:04,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.526315789473684) internal successors, (134), 38 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 17:00:04,772 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 448 transitions. [2025-02-07 17:00:04,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-07 17:00:04,773 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:00:04,773 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:00:04,785 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 17:00:04,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:00:04,973 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:00:04,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:00:04,974 INFO L85 PathProgramCache]: Analyzing trace with hash 921799964, now seen corresponding path program 2 times [2025-02-07 17:00:04,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:00:04,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824674077] [2025-02-07 17:00:04,974 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:00:04,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:00:04,982 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 48 statements into 2 equivalence classes. [2025-02-07 17:00:04,989 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-02-07 17:00:04,989 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:00:04,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:05,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:00:05,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824674077] [2025-02-07 17:00:05,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824674077] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:00:05,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125606838] [2025-02-07 17:00:05,217 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:00:05,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:00:05,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:00:05,219 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:00:05,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-07 17:00:05,273 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 48 statements into 2 equivalence classes. [2025-02-07 17:00:05,305 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-02-07 17:00:05,305 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:00:05,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:05,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-02-07 17:00:05,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:00:05,460 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 17:00:05,482 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 17:00:05,511 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:00:05,511 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 30 treesize of output 21 [2025-02-07 17:00:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:05,773 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:00:05,831 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 17:00:05,833 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 17:00:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:05,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125606838] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:00:05,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:00:05,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 13] total 29 [2025-02-07 17:00:05,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758432810] [2025-02-07 17:00:05,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:00:05,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-02-07 17:00:05,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:00:05,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-02-07 17:00:05,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2025-02-07 17:00:05,842 INFO L87 Difference]: Start difference. First operand 382 states and 448 transitions. Second operand has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:00:08,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:00:08,557 INFO L93 Difference]: Finished difference Result 662 states and 759 transitions. [2025-02-07 17:00:08,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2025-02-07 17:00:08,557 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2025-02-07 17:00:08,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:00:08,559 INFO L225 Difference]: With dead ends: 662 [2025-02-07 17:00:08,559 INFO L226 Difference]: Without dead ends: 660 [2025-02-07 17:00:08,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8489 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2414, Invalid=20236, Unknown=0, NotChecked=0, Total=22650 [2025-02-07 17:00:08,561 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 235 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 2052 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 2235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 2052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-07 17:00:08,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 359 Invalid, 2235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 2052 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-07 17:00:08,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2025-02-07 17:00:08,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 387. [2025-02-07 17:00:08,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.1735751295336787) internal successors, (453), 386 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:00:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 453 transitions. [2025-02-07 17:00:08,626 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 453 transitions. Word has length 48 [2025-02-07 17:00:08,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:00:08,626 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 453 transitions. [2025-02-07 17:00:08,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:00:08,627 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 453 transitions. [2025-02-07 17:00:08,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-07 17:00:08,627 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:00:08,627 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:00:08,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-07 17:00:08,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:00:08,832 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:00:08,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:00:08,832 INFO L85 PathProgramCache]: Analyzing trace with hash 562991976, now seen corresponding path program 1 times [2025-02-07 17:00:08,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:00:08,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729287909] [2025-02-07 17:00:08,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:00:08,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:00:08,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-07 17:00:08,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-07 17:00:08,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:00:08,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-07 17:00:08,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:00:08,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729287909] [2025-02-07 17:00:08,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729287909] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:00:08,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:00:08,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 17:00:08,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732734828] [2025-02-07 17:00:08,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:00:08,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 17:00:08,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:00:08,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 17:00:08,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 17:00:08,891 INFO L87 Difference]: Start difference. First operand 387 states and 453 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:00:08,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:00:08,933 INFO L93 Difference]: Finished difference Result 542 states and 634 transitions. [2025-02-07 17:00:08,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 17:00:08,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-02-07 17:00:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:00:08,934 INFO L225 Difference]: With dead ends: 542 [2025-02-07 17:00:08,934 INFO L226 Difference]: Without dead ends: 346 [2025-02-07 17:00:08,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 17:00:08,934 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:00:08,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 37 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:00:08,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2025-02-07 17:00:08,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 282. [2025-02-07 17:00:08,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.1423487544483986) internal successors, (321), 281 states have internal predecessors, (321), 0 states have call successors, (0), 0 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 17:00:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 321 transitions. [2025-02-07 17:00:08,962 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 321 transitions. Word has length 50 [2025-02-07 17:00:08,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:00:08,962 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 321 transitions. [2025-02-07 17:00:08,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:00:08,962 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 321 transitions. [2025-02-07 17:00:08,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-07 17:00:08,962 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:00:08,963 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:00:08,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-07 17:00:08,963 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:00:08,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:00:08,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1052084431, now seen corresponding path program 6 times [2025-02-07 17:00:08,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:00:08,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210760876] [2025-02-07 17:00:08,963 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 17:00:08,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:00:08,970 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 53 statements into 7 equivalence classes. [2025-02-07 17:00:08,988 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 53 of 53 statements. [2025-02-07 17:00:08,988 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-07 17:00:08,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:09,310 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:09,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:00:09,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210760876] [2025-02-07 17:00:09,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210760876] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:00:09,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105424423] [2025-02-07 17:00:09,311 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 17:00:09,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:00:09,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:00:09,315 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:00:09,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-07 17:00:09,382 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 53 statements into 7 equivalence classes. [2025-02-07 17:00:09,477 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 53 of 53 statements. [2025-02-07 17:00:09,477 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-07 17:00:09,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:09,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-02-07 17:00:09,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:00:09,498 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 13 treesize of output 9 [2025-02-07 17:00:09,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 22 [2025-02-07 17:00:09,765 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:09,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:00:09,839 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 17:00:09,841 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 17:00:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:09,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105424423] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:00:09,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:00:09,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 16] total 29 [2025-02-07 17:00:09,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355205325] [2025-02-07 17:00:09,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:00:09,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-02-07 17:00:09,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:00:09,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-02-07 17:00:09,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2025-02-07 17:00:09,851 INFO L87 Difference]: Start difference. First operand 282 states and 321 transitions. Second operand has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 29 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 17:00:12,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:00:12,759 INFO L93 Difference]: Finished difference Result 738 states and 833 transitions. [2025-02-07 17:00:12,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2025-02-07 17:00:12,760 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 29 states have internal predecessors, (99), 0 states have call successors, (0), 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 53 [2025-02-07 17:00:12,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:00:12,766 INFO L225 Difference]: With dead ends: 738 [2025-02-07 17:00:12,766 INFO L226 Difference]: Without dead ends: 736 [2025-02-07 17:00:12,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11503 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2349, Invalid=27063, Unknown=0, NotChecked=0, Total=29412 [2025-02-07 17:00:12,773 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 170 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 2899 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 3145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 2899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:00:12,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 445 Invalid, 3145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 2899 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-07 17:00:12,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2025-02-07 17:00:12,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 280. [2025-02-07 17:00:12,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.1433691756272402) internal successors, (319), 279 states have internal predecessors, (319), 0 states have call successors, (0), 0 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 17:00:12,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 319 transitions. [2025-02-07 17:00:12,817 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 319 transitions. Word has length 53 [2025-02-07 17:00:12,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:00:12,817 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 319 transitions. [2025-02-07 17:00:12,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 29 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 17:00:12,817 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 319 transitions. [2025-02-07 17:00:12,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-07 17:00:12,818 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:00:12,818 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:00:12,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-07 17:00:13,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:00:13,022 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:00:13,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:00:13,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2139047505, now seen corresponding path program 3 times [2025-02-07 17:00:13,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:00:13,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807010123] [2025-02-07 17:00:13,022 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:00:13,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:00:13,030 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 7 equivalence classes. [2025-02-07 17:00:13,062 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 53 of 53 statements. [2025-02-07 17:00:13,065 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-07 17:00:13,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 62 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:13,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:00:13,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807010123] [2025-02-07 17:00:13,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807010123] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:00:13,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626695532] [2025-02-07 17:00:13,690 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:00:13,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:00:13,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:00:13,693 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:00:13,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-07 17:00:13,751 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 7 equivalence classes. [2025-02-07 17:00:13,813 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 53 of 53 statements. [2025-02-07 17:00:13,813 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-07 17:00:13,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:13,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-07 17:00:13,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:00:13,962 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 17:00:13,983 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 17:00:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 12 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:14,352 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:00:14,588 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 17:00:14,590 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 17:00:14,665 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 12 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:14,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626695532] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:00:14,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:00:14,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 42 [2025-02-07 17:00:14,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525653412] [2025-02-07 17:00:14,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:00:14,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-02-07 17:00:14,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:00:14,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-02-07 17:00:14,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2025-02-07 17:00:14,667 INFO L87 Difference]: Start difference. First operand 280 states and 319 transitions. Second operand has 42 states, 42 states have (on average 3.5714285714285716) internal successors, (150), 42 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 17:00:21,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:00:21,635 INFO L93 Difference]: Finished difference Result 764 states and 850 transitions. [2025-02-07 17:00:21,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2025-02-07 17:00:21,635 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.5714285714285716) internal successors, (150), 42 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2025-02-07 17:00:21,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:00:21,637 INFO L225 Difference]: With dead ends: 764 [2025-02-07 17:00:21,637 INFO L226 Difference]: Without dead ends: 653 [2025-02-07 17:00:21,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12639 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=4293, Invalid=33537, Unknown=0, NotChecked=0, Total=37830 [2025-02-07 17:00:21,639 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 826 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-07 17:00:21,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 446 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-07 17:00:21,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2025-02-07 17:00:21,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 335. [2025-02-07 17:00:21,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.1347305389221556) internal successors, (379), 334 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:00:21,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 379 transitions. [2025-02-07 17:00:21,676 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 379 transitions. Word has length 53 [2025-02-07 17:00:21,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:00:21,676 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 379 transitions. [2025-02-07 17:00:21,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.5714285714285716) internal successors, (150), 42 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 17:00:21,677 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 379 transitions. [2025-02-07 17:00:21,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-07 17:00:21,677 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:00:21,677 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:00:21,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-07 17:00:21,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-02-07 17:00:21,878 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:00:21,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:00:21,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1506154368, now seen corresponding path program 1 times [2025-02-07 17:00:21,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:00:21,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257441671] [2025-02-07 17:00:21,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:00:21,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:00:21,886 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-07 17:00:21,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-07 17:00:21,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:00:21,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:22,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:00:22,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257441671] [2025-02-07 17:00:22,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257441671] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:00:22,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72362284] [2025-02-07 17:00:22,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:00:22,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:00:22,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:00:22,096 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:00:22,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-07 17:00:22,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-07 17:00:22,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-07 17:00:22,177 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:00:22,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:22,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-07 17:00:22,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:00:22,237 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 17:00:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:22,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:00:22,701 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 17:00:22,702 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 17:00:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:22,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72362284] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:00:22,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:00:22,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 17] total 34 [2025-02-07 17:00:22,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181002376] [2025-02-07 17:00:22,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:00:22,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-07 17:00:22,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:00:22,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-07 17:00:22,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2025-02-07 17:00:22,712 INFO L87 Difference]: Start difference. First operand 335 states and 379 transitions. Second operand has 34 states, 34 states have (on average 3.588235294117647) internal successors, (122), 34 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 17:00:28,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:00:28,697 INFO L93 Difference]: Finished difference Result 1151 states and 1294 transitions. [2025-02-07 17:00:28,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 282 states. [2025-02-07 17:00:28,697 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.588235294117647) internal successors, (122), 34 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-02-07 17:00:28,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:00:28,700 INFO L225 Difference]: With dead ends: 1151 [2025-02-07 17:00:28,700 INFO L226 Difference]: Without dead ends: 1149 [2025-02-07 17:00:28,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 298 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38201 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5408, Invalid=84292, Unknown=0, NotChecked=0, Total=89700 [2025-02-07 17:00:28,703 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 298 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 5580 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 6056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 5580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:00:28,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 710 Invalid, 6056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 5580 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-02-07 17:00:28,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2025-02-07 17:00:28,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 365. [2025-02-07 17:00:28,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.1318681318681318) internal successors, (412), 364 states have internal predecessors, (412), 0 states have call successors, (0), 0 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 17:00:28,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 412 transitions. [2025-02-07 17:00:28,746 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 412 transitions. Word has length 58 [2025-02-07 17:00:28,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:00:28,746 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 412 transitions. [2025-02-07 17:00:28,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.588235294117647) internal successors, (122), 34 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 17:00:28,746 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 412 transitions. [2025-02-07 17:00:28,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-07 17:00:28,747 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:00:28,747 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:00:28,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-07 17:00:28,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-07 17:00:28,951 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:00:28,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:00:28,951 INFO L85 PathProgramCache]: Analyzing trace with hash 667561199, now seen corresponding path program 7 times [2025-02-07 17:00:28,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:00:28,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855934982] [2025-02-07 17:00:28,952 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 17:00:28,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:00:28,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-07 17:00:28,963 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-07 17:00:28,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:00:28,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 136 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:29,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:00:29,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855934982] [2025-02-07 17:00:29,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855934982] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:00:29,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103184797] [2025-02-07 17:00:29,239 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 17:00:29,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:00:29,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:00:29,242 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:00:29,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-07 17:00:29,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-07 17:00:29,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-07 17:00:29,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:00:29,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:29,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-07 17:00:29,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:00:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 172 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:29,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:00:29,977 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 172 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:29,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103184797] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:00:29,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:00:29,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 15] total 42 [2025-02-07 17:00:29,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700111121] [2025-02-07 17:00:29,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:00:29,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-02-07 17:00:29,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:00:29,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-02-07 17:00:29,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=1281, Unknown=0, NotChecked=0, Total=1722 [2025-02-07 17:00:29,979 INFO L87 Difference]: Start difference. First operand 365 states and 412 transitions. Second operand has 42 states, 42 states have (on average 4.238095238095238) internal successors, (178), 42 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:00:30,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:00:30,277 INFO L93 Difference]: Finished difference Result 626 states and 703 transitions. [2025-02-07 17:00:30,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-07 17:00:30,278 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.238095238095238) internal successors, (178), 42 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-02-07 17:00:30,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:00:30,279 INFO L225 Difference]: With dead ends: 626 [2025-02-07 17:00:30,279 INFO L226 Difference]: Without dead ends: 446 [2025-02-07 17:00:30,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2025-02-07 17:00:30,279 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 274 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 17:00:30,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 219 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 17:00:30,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2025-02-07 17:00:30,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 401. [2025-02-07 17:00:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 1.12) internal successors, (448), 400 states have internal predecessors, (448), 0 states have call successors, (0), 0 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 17:00:30,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 448 transitions. [2025-02-07 17:00:30,325 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 448 transitions. Word has length 63 [2025-02-07 17:00:30,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:00:30,325 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 448 transitions. [2025-02-07 17:00:30,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.238095238095238) internal successors, (178), 42 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:00:30,325 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 448 transitions. [2025-02-07 17:00:30,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-02-07 17:00:30,326 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:00:30,326 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:00:30,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-07 17:00:30,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:00:30,527 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:00:30,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:00:30,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1091925410, now seen corresponding path program 4 times [2025-02-07 17:00:30,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:00:30,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043928439] [2025-02-07 17:00:30,527 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 17:00:30,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:00:30,534 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 64 statements into 2 equivalence classes. [2025-02-07 17:00:30,541 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 64 of 64 statements. [2025-02-07 17:00:30,541 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 17:00:30,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:31,077 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 14 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:31,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:00:31,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043928439] [2025-02-07 17:00:31,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043928439] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:00:31,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049452871] [2025-02-07 17:00:31,077 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 17:00:31,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:00:31,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:00:31,079 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:00:31,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-07 17:00:31,147 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 64 statements into 2 equivalence classes. [2025-02-07 17:00:31,171 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 64 of 64 statements. [2025-02-07 17:00:31,172 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 17:00:31,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:31,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-02-07 17:00:31,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:00:31,283 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 17:00:31,332 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 31 treesize of output 11 [2025-02-07 17:00:31,340 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 31 treesize of output 11 [2025-02-07 17:00:31,346 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 31 treesize of output 11 [2025-02-07 17:00:31,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:00:31,356 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 31 treesize of output 11 [2025-02-07 17:00:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 14 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:31,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:00:33,172 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 53 treesize of output 49 [2025-02-07 17:00:33,175 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 99 treesize of output 91 [2025-02-07 17:00:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:33,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049452871] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:00:33,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:00:33,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 21] total 54 [2025-02-07 17:00:33,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073809276] [2025-02-07 17:00:33,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:00:33,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2025-02-07 17:00:33,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:00:33,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2025-02-07 17:00:33,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2626, Unknown=2, NotChecked=0, Total=2862 [2025-02-07 17:00:33,364 INFO L87 Difference]: Start difference. First operand 401 states and 448 transitions. Second operand has 54 states, 54 states have (on average 3.4444444444444446) internal successors, (186), 54 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:00:39,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:00:39,159 INFO L93 Difference]: Finished difference Result 919 states and 1007 transitions. [2025-02-07 17:00:39,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2025-02-07 17:00:39,159 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.4444444444444446) internal successors, (186), 54 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2025-02-07 17:00:39,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:00:39,161 INFO L225 Difference]: With dead ends: 919 [2025-02-07 17:00:39,161 INFO L226 Difference]: Without dead ends: 910 [2025-02-07 17:00:39,163 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8266 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2891, Invalid=25163, Unknown=2, NotChecked=0, Total=28056 [2025-02-07 17:00:39,164 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 674 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 3098 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 3524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 3098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-07 17:00:39,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 289 Invalid, 3524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 3098 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-07 17:00:39,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2025-02-07 17:00:39,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 406. [2025-02-07 17:00:39,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.1185185185185185) internal successors, (453), 405 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:00:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 453 transitions. [2025-02-07 17:00:39,218 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 453 transitions. Word has length 64 [2025-02-07 17:00:39,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:00:39,218 INFO L471 AbstractCegarLoop]: Abstraction has 406 states and 453 transitions. [2025-02-07 17:00:39,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.4444444444444446) internal successors, (186), 54 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:00:39,218 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 453 transitions. [2025-02-07 17:00:39,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-07 17:00:39,219 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:00:39,219 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 5, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:00:39,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-07 17:00:39,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:00:39,422 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:00:39,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:00:39,422 INFO L85 PathProgramCache]: Analyzing trace with hash 108657642, now seen corresponding path program 8 times [2025-02-07 17:00:39,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:00:39,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683914700] [2025-02-07 17:00:39,422 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:00:39,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:00:39,432 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 69 statements into 2 equivalence classes. [2025-02-07 17:00:39,443 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-02-07 17:00:39,445 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:00:39,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:39,816 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 16 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:39,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:00:39,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683914700] [2025-02-07 17:00:39,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683914700] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:00:39,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431427974] [2025-02-07 17:00:39,817 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:00:39,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:00:39,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:00:39,819 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:00:39,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-07 17:00:39,890 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 69 statements into 2 equivalence classes. [2025-02-07 17:00:39,914 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-02-07 17:00:39,914 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:00:39,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:39,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-07 17:00:39,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:00:40,040 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 17:00:40,067 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 17:00:40,075 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 17:00:40,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:00:40,105 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 30 treesize of output 21 [2025-02-07 17:00:40,561 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:00:40,561 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 17:00:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 16 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:40,563 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:00:40,793 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 17:00:40,795 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 17:00:40,896 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 16 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:40,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431427974] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:00:40,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:00:40,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 17] total 49 [2025-02-07 17:00:40,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875934197] [2025-02-07 17:00:40,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:00:40,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-02-07 17:00:40,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:00:40,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-02-07 17:00:40,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2176, Unknown=0, NotChecked=0, Total=2352 [2025-02-07 17:00:40,898 INFO L87 Difference]: Start difference. First operand 406 states and 453 transitions. Second operand has 49 states, 49 states have (on average 4.020408163265306) internal successors, (197), 49 states have internal predecessors, (197), 0 states have call successors, (0), 0 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 17:00:45,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:00:45,633 INFO L93 Difference]: Finished difference Result 713 states and 790 transitions. [2025-02-07 17:00:45,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2025-02-07 17:00:45,633 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.020408163265306) internal successors, (197), 49 states have internal predecessors, (197), 0 states have call successors, (0), 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 69 [2025-02-07 17:00:45,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:00:45,635 INFO L225 Difference]: With dead ends: 713 [2025-02-07 17:00:45,635 INFO L226 Difference]: Without dead ends: 704 [2025-02-07 17:00:45,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9377 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2747, Invalid=28053, Unknown=0, NotChecked=0, Total=30800 [2025-02-07 17:00:45,637 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 568 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 3132 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 3652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 3132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-07 17:00:45,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 695 Invalid, 3652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [520 Valid, 3132 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-07 17:00:45,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2025-02-07 17:00:45,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 436. [2025-02-07 17:00:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 1.1149425287356323) internal successors, (485), 435 states have internal predecessors, (485), 0 states have call successors, (0), 0 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 17:00:45,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 485 transitions. [2025-02-07 17:00:45,692 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 485 transitions. Word has length 69 [2025-02-07 17:00:45,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:00:45,693 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 485 transitions. [2025-02-07 17:00:45,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.020408163265306) internal successors, (197), 49 states have internal predecessors, (197), 0 states have call successors, (0), 0 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 17:00:45,693 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 485 transitions. [2025-02-07 17:00:45,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-07 17:00:45,693 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:00:45,694 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 7, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:00:45,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-07 17:00:45,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-02-07 17:00:45,898 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:00:45,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:00:45,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1539658065, now seen corresponding path program 2 times [2025-02-07 17:00:45,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:00:45,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207176536] [2025-02-07 17:00:45,898 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:00:45,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:00:45,908 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 69 statements into 2 equivalence classes. [2025-02-07 17:00:45,914 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-02-07 17:00:45,914 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:00:45,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 193 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:46,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:00:46,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207176536] [2025-02-07 17:00:46,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207176536] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:00:46,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703680746] [2025-02-07 17:00:46,252 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:00:46,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:00:46,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:00:46,258 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:00:46,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-07 17:00:46,351 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 69 statements into 2 equivalence classes. [2025-02-07 17:00:46,377 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-02-07 17:00:46,377 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:00:46,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:46,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-02-07 17:00:46,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:00:46,469 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 17:00:46,492 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 17:00:46,496 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 17:00:46,525 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:00:46,525 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 30 treesize of output 21 [2025-02-07 17:00:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 193 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:46,995 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:00:47,125 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 17:00:47,126 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 17:00:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 193 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:47,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703680746] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:00:47,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:00:47,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 19] total 39 [2025-02-07 17:00:47,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889697603] [2025-02-07 17:00:47,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:00:47,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-02-07 17:00:47,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:00:47,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-02-07 17:00:47,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1308, Unknown=0, NotChecked=0, Total=1482 [2025-02-07 17:00:47,140 INFO L87 Difference]: Start difference. First operand 436 states and 485 transitions. Second operand has 39 states, 39 states have (on average 3.8461538461538463) internal successors, (150), 39 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 17:00:52,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:00:52,874 INFO L93 Difference]: Finished difference Result 1038 states and 1160 transitions. [2025-02-07 17:00:52,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2025-02-07 17:00:52,875 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.8461538461538463) internal successors, (150), 39 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-02-07 17:00:52,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:00:52,877 INFO L225 Difference]: With dead ends: 1038 [2025-02-07 17:00:52,877 INFO L226 Difference]: Without dead ends: 1036 [2025-02-07 17:00:52,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29151 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5149, Invalid=65873, Unknown=0, NotChecked=0, Total=71022 [2025-02-07 17:00:52,881 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 398 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 4855 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 5291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 4855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:00:52,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 746 Invalid, 5291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 4855 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-07 17:00:52,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2025-02-07 17:00:52,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 473. [2025-02-07 17:00:52,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.1165254237288136) internal successors, (527), 472 states have internal predecessors, (527), 0 states have call successors, (0), 0 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 17:00:52,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 527 transitions. [2025-02-07 17:00:52,944 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 527 transitions. Word has length 69 [2025-02-07 17:00:52,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:00:52,944 INFO L471 AbstractCegarLoop]: Abstraction has 473 states and 527 transitions. [2025-02-07 17:00:52,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.8461538461538463) internal successors, (150), 39 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 17:00:52,944 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 527 transitions. [2025-02-07 17:00:52,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-07 17:00:52,945 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:00:52,945 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:00:52,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-07 17:00:53,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:00:53,149 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:00:53,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:00:53,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1020622782, now seen corresponding path program 9 times [2025-02-07 17:00:53,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:00:53,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064887356] [2025-02-07 17:00:53,150 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:00:53,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:00:53,159 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 74 statements into 10 equivalence classes. [2025-02-07 17:00:53,185 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 74 of 74 statements. [2025-02-07 17:00:53,185 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-02-07 17:00:53,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 18 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:53,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:00:53,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064887356] [2025-02-07 17:00:53,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064887356] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:00:53,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352759690] [2025-02-07 17:00:53,559 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:00:53,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:00:53,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:00:53,562 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:00:53,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-07 17:00:53,644 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 74 statements into 10 equivalence classes. [2025-02-07 17:00:53,839 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 74 of 74 statements. [2025-02-07 17:00:53,839 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-02-07 17:00:53,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:00:53,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-07 17:00:53,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:00:53,974 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 19 treesize of output 1 [2025-02-07 17:00:53,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 22 [2025-02-07 17:00:54,030 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:00:54,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2025-02-07 17:00:54,532 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:00:54,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2025-02-07 17:00:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 18 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:54,538 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:00:54,837 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 17:00:54,838 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 17:00:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 18 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:00:54,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352759690] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:00:54,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:00:54,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 19] total 53 [2025-02-07 17:00:55,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831089858] [2025-02-07 17:00:55,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:00:55,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-02-07 17:00:55,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:00:55,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-02-07 17:00:55,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2544, Unknown=0, NotChecked=0, Total=2756 [2025-02-07 17:00:55,001 INFO L87 Difference]: Start difference. First operand 473 states and 527 transitions. Second operand has 53 states, 53 states have (on average 4.0) internal successors, (212), 53 states have internal predecessors, (212), 0 states have call successors, (0), 0 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 17:01:02,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:01:02,893 INFO L93 Difference]: Finished difference Result 1027 states and 1136 transitions. [2025-02-07 17:01:02,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2025-02-07 17:01:02,893 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.0) internal successors, (212), 53 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2025-02-07 17:01:02,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:01:02,895 INFO L225 Difference]: With dead ends: 1027 [2025-02-07 17:01:02,895 INFO L226 Difference]: Without dead ends: 1013 [2025-02-07 17:01:02,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22319 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=4520, Invalid=57232, Unknown=0, NotChecked=0, Total=61752 [2025-02-07 17:01:02,906 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 696 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 3968 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 4664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 3968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:01:02,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 802 Invalid, 4664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 3968 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-02-07 17:01:02,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2025-02-07 17:01:02,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 518. [2025-02-07 17:01:02,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 1.11605415860735) internal successors, (577), 517 states have internal predecessors, (577), 0 states have call successors, (0), 0 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 17:01:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 577 transitions. [2025-02-07 17:01:03,000 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 577 transitions. Word has length 74 [2025-02-07 17:01:03,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:01:03,002 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 577 transitions. [2025-02-07 17:01:03,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.0) internal successors, (212), 53 states have internal predecessors, (212), 0 states have call successors, (0), 0 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 17:01:03,002 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 577 transitions. [2025-02-07 17:01:03,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-07 17:01:03,007 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:01:03,007 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:01:03,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-07 17:01:03,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-07 17:01:03,209 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:01:03,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:01:03,209 INFO L85 PathProgramCache]: Analyzing trace with hash 948753121, now seen corresponding path program 3 times [2025-02-07 17:01:03,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:01:03,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716539696] [2025-02-07 17:01:03,210 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:01:03,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:01:03,226 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 74 statements into 10 equivalence classes. [2025-02-07 17:01:03,250 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 74 of 74 statements. [2025-02-07 17:01:03,252 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-02-07 17:01:03,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:01:03,575 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:01:03,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:01:03,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716539696] [2025-02-07 17:01:03,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716539696] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:01:03,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739129655] [2025-02-07 17:01:03,576 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:01:03,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:01:03,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:01:03,578 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:01:03,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-07 17:01:03,668 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 74 statements into 10 equivalence classes. [2025-02-07 17:01:03,804 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 74 of 74 statements. [2025-02-07 17:01:03,804 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-02-07 17:01:03,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:01:03,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-02-07 17:01:03,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:01:03,821 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 13 treesize of output 9 [2025-02-07 17:01:03,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 22 [2025-02-07 17:01:03,848 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:01:03,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2025-02-07 17:01:04,271 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:01:04,271 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:01:04,382 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 17:01:04,383 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 17:01:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:01:04,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739129655] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:01:04,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:01:04,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 19] total 34 [2025-02-07 17:01:04,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762759910] [2025-02-07 17:01:04,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:01:04,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-07 17:01:04,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:01:04,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-07 17:01:04,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2025-02-07 17:01:04,398 INFO L87 Difference]: Start difference. First operand 518 states and 577 transitions. Second operand has 34 states, 34 states have (on average 4.088235294117647) internal successors, (139), 34 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:01:09,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:01:09,908 INFO L93 Difference]: Finished difference Result 1044 states and 1165 transitions. [2025-02-07 17:01:09,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2025-02-07 17:01:09,908 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.088235294117647) internal successors, (139), 34 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2025-02-07 17:01:09,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:01:09,911 INFO L225 Difference]: With dead ends: 1044 [2025-02-07 17:01:09,911 INFO L226 Difference]: Without dead ends: 1042 [2025-02-07 17:01:09,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29996 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4497, Invalid=67595, Unknown=0, NotChecked=0, Total=72092 [2025-02-07 17:01:09,915 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 369 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 4003 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 4394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 4003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-07 17:01:09,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 672 Invalid, 4394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 4003 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-07 17:01:09,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2025-02-07 17:01:10,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 516. [2025-02-07 17:01:10,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 1.112621359223301) internal successors, (573), 515 states have internal predecessors, (573), 0 states have call successors, (0), 0 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 17:01:10,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 573 transitions. [2025-02-07 17:01:10,011 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 573 transitions. Word has length 74 [2025-02-07 17:01:10,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:01:10,011 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 573 transitions. [2025-02-07 17:01:10,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.088235294117647) internal successors, (139), 34 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 17:01:10,011 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 573 transitions. [2025-02-07 17:01:10,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-07 17:01:10,012 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:01:10,012 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 6, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:01:10,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-02-07 17:01:10,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:01:10,213 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:01:10,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:01:10,213 INFO L85 PathProgramCache]: Analyzing trace with hash -249826582, now seen corresponding path program 10 times [2025-02-07 17:01:10,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:01:10,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154142859] [2025-02-07 17:01:10,213 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 17:01:10,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:01:10,221 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 79 statements into 2 equivalence classes. [2025-02-07 17:01:10,230 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-02-07 17:01:10,230 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 17:01:10,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:01:10,541 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:01:10,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:01:10,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154142859] [2025-02-07 17:01:10,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154142859] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:01:10,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452617232] [2025-02-07 17:01:10,541 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 17:01:10,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:01:10,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:01:10,544 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:01:10,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-07 17:01:10,635 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 79 statements into 2 equivalence classes. [2025-02-07 17:01:10,662 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-02-07 17:01:10,662 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 17:01:10,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:01:10,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-02-07 17:01:10,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:01:10,738 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 17:01:10,757 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 17:01:11,147 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:01:11,148 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:01:11,240 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 17:01:11,241 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 17:01:11,251 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:01:11,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452617232] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:01:11,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:01:11,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 20] total 40 [2025-02-07 17:01:11,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788264504] [2025-02-07 17:01:11,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:01:11,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-02-07 17:01:11,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:01:11,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-02-07 17:01:11,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1407, Unknown=0, NotChecked=0, Total=1560 [2025-02-07 17:01:11,252 INFO L87 Difference]: Start difference. First operand 516 states and 573 transitions. Second operand has 40 states, 40 states have (on average 4.175) internal successors, (167), 40 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)