./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_15-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_15-1.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 06a81e8bf3973396767cf6326af5dc9a5105a737c418064bf310f9765cc117f7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 04:04:42,431 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 04:04:42,484 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 04:04:42,489 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 04:04:42,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 04:04:42,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 04:04:42,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 04:04:42,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 04:04:42,506 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 04:04:42,506 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 04:04:42,507 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 04:04:42,507 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 04:04:42,507 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 04:04:42,507 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 04:04:42,507 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 04:04:42,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 04:04:42,508 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 04:04:42,508 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 04:04:42,508 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 04:04:42,508 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 04:04:42,508 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 04:04:42,508 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 04:04:42,508 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 04:04:42,508 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 04:04:42,508 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 04:04:42,508 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 04:04:42,508 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 04:04:42,508 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 04:04:42,508 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 04:04:42,508 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:04:42,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:04:42,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:04:42,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:04:42,509 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 04:04:42,509 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:04:42,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:04:42,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:04:42,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:04:42,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 04:04:42,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 04:04:42,509 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 04:04:42,509 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 04:04:42,509 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 04:04:42,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 04:04:42,509 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 04:04:42,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 04:04:42,510 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 04:04:42,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 04:04:42,510 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 -> 06a81e8bf3973396767cf6326af5dc9a5105a737c418064bf310f9765cc117f7 [2025-01-09 04:04:42,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 04:04:42,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 04:04:42,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 04:04:42,745 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 04:04:42,746 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 04:04:42,747 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_15-1.c [2025-01-09 04:04:43,913 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/de3d61213/d816bcc4a09b4c9ebae356a26936fa98/FLAG02301bcec [2025-01-09 04:04:44,106 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 04:04:44,106 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_15-1.c [2025-01-09 04:04:44,115 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/de3d61213/d816bcc4a09b4c9ebae356a26936fa98/FLAG02301bcec [2025-01-09 04:04:44,140 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/de3d61213/d816bcc4a09b4c9ebae356a26936fa98 [2025-01-09 04:04:44,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 04:04:44,143 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 04:04:44,144 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 04:04:44,144 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 04:04:44,147 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 04:04:44,148 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:04:44" (1/1) ... [2025-01-09 04:04:44,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab977d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:04:44, skipping insertion in model container [2025-01-09 04:04:44,148 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:04:44" (1/1) ... [2025-01-09 04:04:44,159 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 04:04:44,256 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/recursive-simple/fibo_15-1.c[744,757] [2025-01-09 04:04:44,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:04:44,268 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 04:04:44,279 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/recursive-simple/fibo_15-1.c[744,757] [2025-01-09 04:04:44,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:04:44,292 INFO L204 MainTranslator]: Completed translation [2025-01-09 04:04:44,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:04:44 WrapperNode [2025-01-09 04:04:44,295 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 04:04:44,296 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 04:04:44,297 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 04:04:44,297 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 04:04:44,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:04:44" (1/1) ... [2025-01-09 04:04:44,305 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:04:44" (1/1) ... [2025-01-09 04:04:44,315 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2025-01-09 04:04:44,316 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 04:04:44,317 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 04:04:44,318 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 04:04:44,318 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 04:04:44,323 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:04:44" (1/1) ... [2025-01-09 04:04:44,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:04:44" (1/1) ... [2025-01-09 04:04:44,324 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:04:44" (1/1) ... [2025-01-09 04:04:44,334 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 04:04:44,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:04:44" (1/1) ... [2025-01-09 04:04:44,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:04:44" (1/1) ... [2025-01-09 04:04:44,339 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:04:44" (1/1) ... [2025-01-09 04:04:44,339 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:04:44" (1/1) ... [2025-01-09 04:04:44,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:04:44" (1/1) ... [2025-01-09 04:04:44,340 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:04:44" (1/1) ... [2025-01-09 04:04:44,341 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:04:44" (1/1) ... [2025-01-09 04:04:44,343 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 04:04:44,344 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 04:04:44,344 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 04:04:44,344 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 04:04:44,345 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:04:44" (1/1) ... [2025-01-09 04:04:44,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:04:44,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:44,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 04:04:44,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 04:04:44,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 04:04:44,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 04:04:44,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 04:04:44,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 04:04:44,394 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2025-01-09 04:04:44,394 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2025-01-09 04:04:44,433 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 04:04:44,434 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 04:04:44,515 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-01-09 04:04:44,515 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 04:04:44,528 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 04:04:44,528 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 04:04:44,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:04:44 BoogieIcfgContainer [2025-01-09 04:04:44,529 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 04:04:44,530 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 04:04:44,531 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 04:04:44,534 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 04:04:44,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:04:44" (1/3) ... [2025-01-09 04:04:44,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfa7790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:04:44, skipping insertion in model container [2025-01-09 04:04:44,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:04:44" (2/3) ... [2025-01-09 04:04:44,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfa7790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:04:44, skipping insertion in model container [2025-01-09 04:04:44,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:04:44" (3/3) ... [2025-01-09 04:04:44,537 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_15-1.c [2025-01-09 04:04:44,548 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 04:04:44,549 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_15-1.c that has 2 procedures, 20 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-01-09 04:04:44,584 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 04:04:44,595 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;@6dcd34b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 04:04:44,596 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 04:04:44,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-09 04:04:44,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 04:04:44,603 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:44,604 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:44,604 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:44,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:44,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1755511548, now seen corresponding path program 1 times [2025-01-09 04:04:44,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:44,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291031145] [2025-01-09 04:04:44,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:04:44,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:44,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 04:04:44,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 04:04:44,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:04:44,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:04:44,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:44,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291031145] [2025-01-09 04:04:44,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291031145] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:04:44,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:04:44,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 04:04:44,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407536282] [2025-01-09 04:04:44,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:04:44,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:04:44,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:44,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:04:44,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:04:44,800 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:04:44,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:44,870 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2025-01-09 04:04:44,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:04:44,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2025-01-09 04:04:44,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:44,876 INFO L225 Difference]: With dead ends: 32 [2025-01-09 04:04:44,877 INFO L226 Difference]: Without dead ends: 20 [2025-01-09 04:04:44,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:04:44,883 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:44,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 51 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:04:44,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-01-09 04:04:44,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2025-01-09 04:04:44,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-01-09 04:04:44,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2025-01-09 04:04:44,913 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2025-01-09 04:04:44,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:44,913 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2025-01-09 04:04:44,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:04:44,914 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2025-01-09 04:04:44,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-09 04:04:44,914 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:44,915 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:44,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 04:04:44,915 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:44,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:44,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2128459596, now seen corresponding path program 1 times [2025-01-09 04:04:44,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:44,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404365281] [2025-01-09 04:04:44,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:04:44,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:44,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-09 04:04:44,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 04:04:44,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:04:44,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:04:44,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:44,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404365281] [2025-01-09 04:04:44,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404365281] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:04:44,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:04:44,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 04:04:44,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605784359] [2025-01-09 04:04:44,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:04:44,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:04:44,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:44,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:04:44,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:04:44,988 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:04:45,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:45,029 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2025-01-09 04:04:45,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 04:04:45,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-01-09 04:04:45,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:45,030 INFO L225 Difference]: With dead ends: 24 [2025-01-09 04:04:45,030 INFO L226 Difference]: Without dead ends: 20 [2025-01-09 04:04:45,030 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:04:45,031 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:45,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:04:45,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-01-09 04:04:45,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2025-01-09 04:04:45,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-01-09 04:04:45,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2025-01-09 04:04:45,036 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2025-01-09 04:04:45,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:45,037 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2025-01-09 04:04:45,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 04:04:45,038 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2025-01-09 04:04:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 04:04:45,039 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:45,039 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:45,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 04:04:45,039 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:45,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:45,041 INFO L85 PathProgramCache]: Analyzing trace with hash -42544313, now seen corresponding path program 1 times [2025-01-09 04:04:45,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:45,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262808178] [2025-01-09 04:04:45,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:04:45,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:45,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 04:04:45,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 04:04:45,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:04:45,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:45,185 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 04:04:45,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:45,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262808178] [2025-01-09 04:04:45,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262808178] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:45,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330059799] [2025-01-09 04:04:45,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:04:45,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:45,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:45,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:45,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 04:04:45,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 04:04:45,229 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 04:04:45,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:04:45,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:45,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 04:04:45,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 04:04:45,320 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 04:04:45,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330059799] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:45,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:45,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 11 [2025-01-09 04:04:45,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777310771] [2025-01-09 04:04:45,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:45,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 04:04:45,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:45,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 04:04:45,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-01-09 04:04:45,552 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 04:04:45,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:45,635 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2025-01-09 04:04:45,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 04:04:45,636 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2025-01-09 04:04:45,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:45,636 INFO L225 Difference]: With dead ends: 35 [2025-01-09 04:04:45,636 INFO L226 Difference]: Without dead ends: 20 [2025-01-09 04:04:45,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2025-01-09 04:04:45,637 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:45,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 60 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:04:45,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-01-09 04:04:45,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-01-09 04:04:45,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-01-09 04:04:45,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2025-01-09 04:04:45,642 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 23 [2025-01-09 04:04:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:45,642 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2025-01-09 04:04:45,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 04:04:45,642 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2025-01-09 04:04:45,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-09 04:04:45,642 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:45,643 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:45,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 04:04:45,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:45,843 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:45,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:45,844 INFO L85 PathProgramCache]: Analyzing trace with hash 170813287, now seen corresponding path program 1 times [2025-01-09 04:04:45,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:45,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421136838] [2025-01-09 04:04:45,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:04:45,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:45,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 04:04:45,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 04:04:45,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:04:45,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 04:04:45,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:45,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421136838] [2025-01-09 04:04:45,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421136838] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:45,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057414674] [2025-01-09 04:04:45,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:04:45,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:45,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:45,939 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:45,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 04:04:45,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 04:04:45,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 04:04:45,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:04:45,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:45,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 04:04:45,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 04:04:46,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:46,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 04:04:46,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057414674] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:46,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:46,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 9 [2025-01-09 04:04:46,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622017306] [2025-01-09 04:04:46,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:46,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 04:04:46,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:46,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 04:04:46,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-01-09 04:04:46,154 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-09 04:04:46,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:46,201 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2025-01-09 04:04:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 04:04:46,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 24 [2025-01-09 04:04:46,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:46,203 INFO L225 Difference]: With dead ends: 29 [2025-01-09 04:04:46,203 INFO L226 Difference]: Without dead ends: 25 [2025-01-09 04:04:46,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-01-09 04:04:46,203 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:46,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 37 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:04:46,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-01-09 04:04:46,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-01-09 04:04:46,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2025-01-09 04:04:46,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2025-01-09 04:04:46,208 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 24 [2025-01-09 04:04:46,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:46,208 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2025-01-09 04:04:46,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-09 04:04:46,208 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2025-01-09 04:04:46,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-09 04:04:46,209 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:46,209 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:46,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 04:04:46,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:46,413 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:46,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:46,413 INFO L85 PathProgramCache]: Analyzing trace with hash -187634876, now seen corresponding path program 2 times [2025-01-09 04:04:46,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:46,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828278329] [2025-01-09 04:04:46,413 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:04:46,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:46,421 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-01-09 04:04:46,429 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 04:04:46,432 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:04:46,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:46,569 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 04:04:46,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:46,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828278329] [2025-01-09 04:04:46,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828278329] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:46,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098267375] [2025-01-09 04:04:46,570 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:04:46,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:46,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:46,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:46,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 04:04:46,597 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-01-09 04:04:46,609 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 04:04:46,609 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:04:46,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:46,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:04:46,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 04:04:46,708 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:46,972 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-09 04:04:46,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098267375] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:46,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:46,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 18 [2025-01-09 04:04:46,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547700694] [2025-01-09 04:04:46,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:46,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 04:04:46,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:46,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 04:04:46,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2025-01-09 04:04:46,974 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 18 states, 16 states have (on average 2.8125) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2025-01-09 04:04:47,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:47,151 INFO L93 Difference]: Finished difference Result 60 states and 93 transitions. [2025-01-09 04:04:47,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 04:04:47,151 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.8125) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) Word has length 37 [2025-01-09 04:04:47,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:47,152 INFO L225 Difference]: With dead ends: 60 [2025-01-09 04:04:47,152 INFO L226 Difference]: Without dead ends: 38 [2025-01-09 04:04:47,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2025-01-09 04:04:47,153 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 52 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:47,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 95 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:04:47,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-01-09 04:04:47,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2025-01-09 04:04:47,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2025-01-09 04:04:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2025-01-09 04:04:47,164 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 37 [2025-01-09 04:04:47,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:47,164 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2025-01-09 04:04:47,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.8125) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2025-01-09 04:04:47,165 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2025-01-09 04:04:47,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-01-09 04:04:47,167 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:47,167 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:47,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 04:04:47,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:47,368 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:47,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:47,368 INFO L85 PathProgramCache]: Analyzing trace with hash -721858190, now seen corresponding path program 3 times [2025-01-09 04:04:47,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:47,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68762840] [2025-01-09 04:04:47,368 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:04:47,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:47,376 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 93 statements into 12 equivalence classes. [2025-01-09 04:04:47,387 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 59 of 93 statements. [2025-01-09 04:04:47,388 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-09 04:04:47,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2025-01-09 04:04:47,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:47,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68762840] [2025-01-09 04:04:47,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68762840] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:47,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608029709] [2025-01-09 04:04:47,481 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:04:47,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:47,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:47,483 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:47,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 04:04:47,508 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 93 statements into 12 equivalence classes. [2025-01-09 04:04:47,526 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 59 of 93 statements. [2025-01-09 04:04:47,526 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-09 04:04:47,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:47,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:04:47,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2025-01-09 04:04:47,559 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:47,990 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 18 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2025-01-09 04:04:47,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608029709] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:47,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:47,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 11 [2025-01-09 04:04:47,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090353344] [2025-01-09 04:04:47,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:47,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 04:04:47,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:47,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 04:04:47,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-01-09 04:04:47,991 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2025-01-09 04:04:48,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:48,089 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2025-01-09 04:04:48,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:04:48,089 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 93 [2025-01-09 04:04:48,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:48,090 INFO L225 Difference]: With dead ends: 72 [2025-01-09 04:04:48,091 INFO L226 Difference]: Without dead ends: 40 [2025-01-09 04:04:48,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 180 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2025-01-09 04:04:48,092 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 17 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:48,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 84 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:04:48,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-01-09 04:04:48,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2025-01-09 04:04:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.103448275862069) internal successors, (32), 27 states have internal predecessors, (32), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2025-01-09 04:04:48,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2025-01-09 04:04:48,099 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 93 [2025-01-09 04:04:48,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:48,099 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2025-01-09 04:04:48,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2025-01-09 04:04:48,100 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2025-01-09 04:04:48,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-01-09 04:04:48,101 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:48,101 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:48,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 04:04:48,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-01-09 04:04:48,302 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:48,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:48,302 INFO L85 PathProgramCache]: Analyzing trace with hash 366248375, now seen corresponding path program 4 times [2025-01-09 04:04:48,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:48,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486132030] [2025-01-09 04:04:48,302 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:04:48,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:48,307 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 79 statements into 2 equivalence classes. [2025-01-09 04:04:48,311 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 65 of 79 statements. [2025-01-09 04:04:48,311 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:04:48,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 72 proven. 121 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2025-01-09 04:04:48,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:48,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486132030] [2025-01-09 04:04:48,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486132030] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:48,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273319232] [2025-01-09 04:04:48,467 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:04:48,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:48,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:48,470 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:48,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 04:04:48,499 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 79 statements into 2 equivalence classes. [2025-01-09 04:04:48,516 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 65 of 79 statements. [2025-01-09 04:04:48,516 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:04:48,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:48,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 04:04:48,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:48,583 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 82 proven. 122 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-01-09 04:04:48,584 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 82 proven. 134 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-01-09 04:04:49,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273319232] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:49,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:49,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2025-01-09 04:04:49,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441000567] [2025-01-09 04:04:49,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:49,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 04:04:49,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:49,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 04:04:49,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2025-01-09 04:04:49,184 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (17), 7 states have call predecessors, (17), 13 states have call successors, (17) [2025-01-09 04:04:49,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:49,387 INFO L93 Difference]: Finished difference Result 86 states and 114 transitions. [2025-01-09 04:04:49,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 04:04:49,387 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (17), 7 states have call predecessors, (17), 13 states have call successors, (17) Word has length 79 [2025-01-09 04:04:49,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:49,388 INFO L225 Difference]: With dead ends: 86 [2025-01-09 04:04:49,388 INFO L226 Difference]: Without dead ends: 52 [2025-01-09 04:04:49,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2025-01-09 04:04:49,389 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 53 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:49,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 98 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:04:49,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-01-09 04:04:49,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2025-01-09 04:04:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.064516129032258) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2025-01-09 04:04:49,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2025-01-09 04:04:49,398 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 79 [2025-01-09 04:04:49,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:49,398 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2025-01-09 04:04:49,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 13 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (17), 7 states have call predecessors, (17), 13 states have call successors, (17) [2025-01-09 04:04:49,398 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2025-01-09 04:04:49,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-01-09 04:04:49,399 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:49,399 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:49,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 04:04:49,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:49,603 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:49,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:49,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2015531204, now seen corresponding path program 5 times [2025-01-09 04:04:49,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:49,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766836457] [2025-01-09 04:04:49,604 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:04:49,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:49,607 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 65 statements into 8 equivalence classes. [2025-01-09 04:04:49,621 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 65 of 65 statements. [2025-01-09 04:04:49,621 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-01-09 04:04:49,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 39 proven. 57 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2025-01-09 04:04:49,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:49,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766836457] [2025-01-09 04:04:49,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766836457] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:49,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488385684] [2025-01-09 04:04:49,706 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:04:49,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:49,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:49,709 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:49,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 04:04:49,738 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 65 statements into 8 equivalence classes. [2025-01-09 04:04:49,757 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 65 of 65 statements. [2025-01-09 04:04:49,758 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-01-09 04:04:49,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:49,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 04:04:49,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:49,813 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 36 proven. 55 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2025-01-09 04:04:49,813 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:50,058 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 36 proven. 62 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-01-09 04:04:50,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488385684] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:50,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:50,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 12 [2025-01-09 04:04:50,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893114995] [2025-01-09 04:04:50,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:50,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 04:04:50,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:50,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 04:04:50,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2025-01-09 04:04:50,060 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 12 states, 10 states have (on average 3.9) internal successors, (39), 12 states have internal predecessors, (39), 8 states have call successors, (12), 1 states have call predecessors, (12), 4 states have return successors, (13), 7 states have call predecessors, (13), 8 states have call successors, (13) [2025-01-09 04:04:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:50,139 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2025-01-09 04:04:50,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:04:50,139 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.9) internal successors, (39), 12 states have internal predecessors, (39), 8 states have call successors, (12), 1 states have call predecessors, (12), 4 states have return successors, (13), 7 states have call predecessors, (13), 8 states have call successors, (13) Word has length 65 [2025-01-09 04:04:50,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:50,140 INFO L225 Difference]: With dead ends: 51 [2025-01-09 04:04:50,140 INFO L226 Difference]: Without dead ends: 47 [2025-01-09 04:04:50,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2025-01-09 04:04:50,141 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:50,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 69 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:04:50,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-01-09 04:04:50,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2025-01-09 04:04:50,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 32 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) [2025-01-09 04:04:50,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2025-01-09 04:04:50,146 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 65 [2025-01-09 04:04:50,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:50,146 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2025-01-09 04:04:50,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.9) internal successors, (39), 12 states have internal predecessors, (39), 8 states have call successors, (12), 1 states have call predecessors, (12), 4 states have return successors, (13), 7 states have call predecessors, (13), 8 states have call successors, (13) [2025-01-09 04:04:50,146 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2025-01-09 04:04:50,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-01-09 04:04:50,147 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:50,147 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:50,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 04:04:50,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-09 04:04:50,348 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:50,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:50,348 INFO L85 PathProgramCache]: Analyzing trace with hash -292645265, now seen corresponding path program 6 times [2025-01-09 04:04:50,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:50,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021762992] [2025-01-09 04:04:50,348 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:04:50,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:50,353 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 106 statements into 13 equivalence classes. [2025-01-09 04:04:50,365 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 92 of 106 statements. [2025-01-09 04:04:50,365 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-01-09 04:04:50,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 45 proven. 223 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2025-01-09 04:04:50,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:50,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021762992] [2025-01-09 04:04:50,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021762992] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:50,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829979566] [2025-01-09 04:04:50,495 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:04:50,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:50,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:50,496 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:50,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 04:04:50,527 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 106 statements into 13 equivalence classes. [2025-01-09 04:04:50,550 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 92 of 106 statements. [2025-01-09 04:04:50,550 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-01-09 04:04:50,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:50,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 04:04:50,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 229 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2025-01-09 04:04:50,605 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 255 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2025-01-09 04:04:51,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829979566] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:51,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:51,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2025-01-09 04:04:51,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054615687] [2025-01-09 04:04:51,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:51,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 04:04:51,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:51,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 04:04:51,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2025-01-09 04:04:51,231 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 16 states, 14 states have (on average 3.5) internal successors, (49), 16 states have internal predecessors, (49), 12 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) [2025-01-09 04:04:51,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:51,310 INFO L93 Difference]: Finished difference Result 59 states and 77 transitions. [2025-01-09 04:04:51,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 04:04:51,310 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.5) internal successors, (49), 16 states have internal predecessors, (49), 12 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) Word has length 106 [2025-01-09 04:04:51,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:51,311 INFO L225 Difference]: With dead ends: 59 [2025-01-09 04:04:51,312 INFO L226 Difference]: Without dead ends: 55 [2025-01-09 04:04:51,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 204 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2025-01-09 04:04:51,313 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 29 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:51,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 81 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:04:51,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-01-09 04:04:51,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2025-01-09 04:04:51,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 35 states have internal predecessors, (38), 8 states have call successors, (8), 5 states have call predecessors, (8), 7 states have return successors, (21), 11 states have call predecessors, (21), 8 states have call successors, (21) [2025-01-09 04:04:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2025-01-09 04:04:51,321 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 106 [2025-01-09 04:04:51,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:51,321 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2025-01-09 04:04:51,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.5) internal successors, (49), 16 states have internal predecessors, (49), 12 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) [2025-01-09 04:04:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2025-01-09 04:04:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2025-01-09 04:04:51,322 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:51,322 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 23, 14, 14, 14, 14, 14, 14, 14, 9, 6, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:51,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-09 04:04:51,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:51,527 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:51,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:51,528 INFO L85 PathProgramCache]: Analyzing trace with hash -943421620, now seen corresponding path program 7 times [2025-01-09 04:04:51,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:51,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333149285] [2025-01-09 04:04:51,528 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:04:51,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:51,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 201 statements into 1 equivalence classes. [2025-01-09 04:04:51,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 201 of 201 statements. [2025-01-09 04:04:51,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:04:51,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 103 proven. 653 refuted. 0 times theorem prover too weak. 1485 trivial. 0 not checked. [2025-01-09 04:04:51,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:51,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333149285] [2025-01-09 04:04:51,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333149285] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:51,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799145850] [2025-01-09 04:04:51,786 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:04:51,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:51,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:51,788 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:51,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 04:04:51,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 201 statements into 1 equivalence classes. [2025-01-09 04:04:51,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 201 of 201 statements. [2025-01-09 04:04:51,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:04:51,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:51,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 04:04:51,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 103 proven. 653 refuted. 0 times theorem prover too weak. 1485 trivial. 0 not checked. [2025-01-09 04:04:51,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:52,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 103 proven. 693 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2025-01-09 04:04:52,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799145850] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:52,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:52,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 17 [2025-01-09 04:04:52,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197386785] [2025-01-09 04:04:52,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:52,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 04:04:52,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:52,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 04:04:52,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2025-01-09 04:04:52,927 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) [2025-01-09 04:04:53,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:53,048 INFO L93 Difference]: Finished difference Result 61 states and 84 transitions. [2025-01-09 04:04:53,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 04:04:53,049 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) Word has length 201 [2025-01-09 04:04:53,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:53,050 INFO L225 Difference]: With dead ends: 61 [2025-01-09 04:04:53,050 INFO L226 Difference]: Without dead ends: 57 [2025-01-09 04:04:53,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 394 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2025-01-09 04:04:53,050 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 63 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:53,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 86 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:04:53,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-01-09 04:04:53,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2025-01-09 04:04:53,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 38 states have internal predecessors, (41), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (30), 13 states have call predecessors, (30), 9 states have call successors, (30) [2025-01-09 04:04:53,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2025-01-09 04:04:53,060 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 201 [2025-01-09 04:04:53,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:53,060 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions. [2025-01-09 04:04:53,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) [2025-01-09 04:04:53,060 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions. [2025-01-09 04:04:53,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2025-01-09 04:04:53,064 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:53,064 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:53,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 04:04:53,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:53,265 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:53,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:53,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1104926743, now seen corresponding path program 8 times [2025-01-09 04:04:53,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:53,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835074881] [2025-01-09 04:04:53,266 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:04:53,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:53,276 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 324 statements into 2 equivalence classes. [2025-01-09 04:04:53,300 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 324 of 324 statements. [2025-01-09 04:04:53,301 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:04:53,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 225 proven. 1327 refuted. 0 times theorem prover too weak. 4487 trivial. 0 not checked. [2025-01-09 04:04:53,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:53,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835074881] [2025-01-09 04:04:53,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835074881] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:53,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900798589] [2025-01-09 04:04:53,582 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:04:53,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:53,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:53,584 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:53,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 04:04:53,640 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 324 statements into 2 equivalence classes. [2025-01-09 04:04:53,703 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 324 of 324 statements. [2025-01-09 04:04:53,703 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:04:53,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:53,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 04:04:53,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:53,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 225 proven. 1327 refuted. 0 times theorem prover too weak. 4487 trivial. 0 not checked. [2025-01-09 04:04:53,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:55,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 225 proven. 1384 refuted. 0 times theorem prover too weak. 4430 trivial. 0 not checked. [2025-01-09 04:04:55,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900798589] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:55,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:55,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 19 [2025-01-09 04:04:55,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807398385] [2025-01-09 04:04:55,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:55,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 04:04:55,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:55,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 04:04:55,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2025-01-09 04:04:55,278 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 19 states have internal predecessors, (58), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2025-01-09 04:04:55,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:55,424 INFO L93 Difference]: Finished difference Result 66 states and 99 transitions. [2025-01-09 04:04:55,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 04:04:55,425 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 19 states have internal predecessors, (58), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) Word has length 324 [2025-01-09 04:04:55,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:55,426 INFO L225 Difference]: With dead ends: 66 [2025-01-09 04:04:55,427 INFO L226 Difference]: Without dead ends: 62 [2025-01-09 04:04:55,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 639 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2025-01-09 04:04:55,428 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 75 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:55,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 82 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:04:55,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-01-09 04:04:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2025-01-09 04:04:55,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 41 states have internal predecessors, (44), 10 states have call successors, (10), 5 states have call predecessors, (10), 9 states have return successors, (41), 15 states have call predecessors, (41), 10 states have call successors, (41) [2025-01-09 04:04:55,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 95 transitions. [2025-01-09 04:04:55,438 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 95 transitions. Word has length 324 [2025-01-09 04:04:55,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:55,439 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 95 transitions. [2025-01-09 04:04:55,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 19 states have internal predecessors, (58), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2025-01-09 04:04:55,439 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 95 transitions. [2025-01-09 04:04:55,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2025-01-09 04:04:55,444 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:55,444 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 59, 36, 36, 36, 36, 36, 36, 36, 23, 14, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:55,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-09 04:04:55,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:55,649 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:55,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:55,650 INFO L85 PathProgramCache]: Analyzing trace with hash 269277482, now seen corresponding path program 9 times [2025-01-09 04:04:55,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:55,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258666622] [2025-01-09 04:04:55,650 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:04:55,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:55,660 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 501 statements into 57 equivalence classes. [2025-01-09 04:04:55,682 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) and asserted 204 of 501 statements. [2025-01-09 04:04:55,682 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2025-01-09 04:04:55,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:55,818 INFO L134 CoverageAnalysis]: Checked inductivity of 14743 backedges. 1517 proven. 265 refuted. 0 times theorem prover too weak. 12961 trivial. 0 not checked. [2025-01-09 04:04:55,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:55,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258666622] [2025-01-09 04:04:55,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258666622] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:55,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840868788] [2025-01-09 04:04:55,819 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:04:55,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:55,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:55,821 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:55,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 04:04:55,899 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 501 statements into 57 equivalence classes. [2025-01-09 04:04:55,994 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) and asserted 204 of 501 statements. [2025-01-09 04:04:55,994 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2025-01-09 04:04:55,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:55,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 04:04:56,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:56,060 INFO L134 CoverageAnalysis]: Checked inductivity of 14743 backedges. 1564 proven. 270 refuted. 0 times theorem prover too weak. 12909 trivial. 0 not checked. [2025-01-09 04:04:56,060 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:04:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 14743 backedges. 1570 proven. 296 refuted. 0 times theorem prover too weak. 12877 trivial. 0 not checked. [2025-01-09 04:04:57,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840868788] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:04:57,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:04:57,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 13] total 17 [2025-01-09 04:04:57,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213268222] [2025-01-09 04:04:57,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:04:57,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 04:04:57,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:04:57,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 04:04:57,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2025-01-09 04:04:57,348 INFO L87 Difference]: Start difference. First operand 62 states and 95 transitions. Second operand has 17 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 17 states have internal predecessors, (50), 9 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) [2025-01-09 04:04:57,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:04:57,496 INFO L93 Difference]: Finished difference Result 165 states and 333 transitions. [2025-01-09 04:04:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 04:04:57,497 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 17 states have internal predecessors, (50), 9 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) Word has length 501 [2025-01-09 04:04:57,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:04:57,499 INFO L225 Difference]: With dead ends: 165 [2025-01-09 04:04:57,499 INFO L226 Difference]: Without dead ends: 106 [2025-01-09 04:04:57,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1019 GetRequests, 993 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2025-01-09 04:04:57,501 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 49 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:04:57,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 75 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:04:57,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2025-01-09 04:04:57,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 77. [2025-01-09 04:04:57,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 51 states have internal predecessors, (56), 14 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (56), 18 states have call predecessors, (56), 14 states have call successors, (56) [2025-01-09 04:04:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 126 transitions. [2025-01-09 04:04:57,519 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 126 transitions. Word has length 501 [2025-01-09 04:04:57,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:04:57,520 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 126 transitions. [2025-01-09 04:04:57,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 17 states have internal predecessors, (50), 9 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) [2025-01-09 04:04:57,520 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 126 transitions. [2025-01-09 04:04:57,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2025-01-09 04:04:57,525 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:04:57,525 INFO L218 NwaCegarLoop]: trace histogram [83, 83, 67, 41, 41, 41, 41, 41, 41, 41, 26, 16, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:04:57,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 04:04:57,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 04:04:57,725 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:04:57,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:04:57,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1550468663, now seen corresponding path program 10 times [2025-01-09 04:04:57,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:04:57,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872309720] [2025-01-09 04:04:57,726 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:04:57,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:04:57,744 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 569 statements into 2 equivalence classes. [2025-01-09 04:04:57,789 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 483 of 569 statements. [2025-01-09 04:04:57,791 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:04:57,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 1662 proven. 3510 refuted. 0 times theorem prover too weak. 13931 trivial. 0 not checked. [2025-01-09 04:04:58,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:04:58,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872309720] [2025-01-09 04:04:58,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872309720] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:04:58,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225102703] [2025-01-09 04:04:58,330 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:04:58,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:04:58,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:04:58,333 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:04:58,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 04:04:58,437 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 569 statements into 2 equivalence classes. [2025-01-09 04:04:58,536 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 483 of 569 statements. [2025-01-09 04:04:58,536 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:04:58,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:04:58,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-09 04:04:58,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:04:58,658 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 1969 proven. 3803 refuted. 0 times theorem prover too weak. 13331 trivial. 0 not checked. [2025-01-09 04:04:58,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:02,183 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 1969 proven. 3911 refuted. 0 times theorem prover too weak. 13223 trivial. 0 not checked. [2025-01-09 04:05:02,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225102703] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:02,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:02,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 31] total 36 [2025-01-09 04:05:02,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58758285] [2025-01-09 04:05:02,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:02,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-09 04:05:02,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:02,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-09 04:05:02,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 04:05:02,185 INFO L87 Difference]: Start difference. First operand 77 states and 126 transitions. Second operand has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 36 states have internal predecessors, (109), 29 states have call successors, (33), 1 states have call predecessors, (33), 16 states have return successors, (45), 17 states have call predecessors, (45), 29 states have call successors, (45) [2025-01-09 04:05:02,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:02,733 INFO L93 Difference]: Finished difference Result 206 states and 448 transitions. [2025-01-09 04:05:02,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-01-09 04:05:02,734 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 36 states have internal predecessors, (109), 29 states have call successors, (33), 1 states have call predecessors, (33), 16 states have return successors, (45), 17 states have call predecessors, (45), 29 states have call successors, (45) Word has length 569 [2025-01-09 04:05:02,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:02,737 INFO L225 Difference]: With dead ends: 206 [2025-01-09 04:05:02,738 INFO L226 Difference]: Without dead ends: 135 [2025-01-09 04:05:02,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1196 GetRequests, 1116 SyntacticMatches, 15 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1076, Invalid=3346, Unknown=0, NotChecked=0, Total=4422 [2025-01-09 04:05:02,740 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 323 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:02,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 194 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 04:05:02,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2025-01-09 04:05:02,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 110. [2025-01-09 04:05:02,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 76 states have internal predecessors, (80), 21 states have call successors, (21), 16 states have call predecessors, (21), 10 states have return successors, (56), 17 states have call predecessors, (56), 21 states have call successors, (56) [2025-01-09 04:05:02,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 157 transitions. [2025-01-09 04:05:02,752 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 157 transitions. Word has length 569 [2025-01-09 04:05:02,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:02,753 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 157 transitions. [2025-01-09 04:05:02,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 36 states have internal predecessors, (109), 29 states have call successors, (33), 1 states have call predecessors, (33), 16 states have return successors, (45), 17 states have call predecessors, (45), 29 states have call successors, (45) [2025-01-09 04:05:02,753 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 157 transitions. [2025-01-09 04:05:02,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1033 [2025-01-09 04:05:02,758 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:02,758 INFO L218 NwaCegarLoop]: trace histogram [151, 151, 122, 75, 75, 75, 75, 75, 75, 75, 47, 29, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:02,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-09 04:05:02,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-09 04:05:02,959 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:02,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:02,960 INFO L85 PathProgramCache]: Analyzing trace with hash 734454185, now seen corresponding path program 11 times [2025-01-09 04:05:02,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:02,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44156863] [2025-01-09 04:05:02,960 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:05:02,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:02,979 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1032 statements into 126 equivalence classes. [2025-01-09 04:05:03,102 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 94 check-sat command(s) and asserted 737 of 1032 statements. [2025-01-09 04:05:03,103 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 94 check-sat command(s) [2025-01-09 04:05:03,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 63781 backedges. 6639 proven. 3319 refuted. 0 times theorem prover too weak. 53823 trivial. 0 not checked. [2025-01-09 04:05:03,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:03,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44156863] [2025-01-09 04:05:03,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44156863] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:03,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158770855] [2025-01-09 04:05:03,983 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 04:05:03,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:03,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:03,985 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:03,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 04:05:04,148 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1032 statements into 126 equivalence classes. [2025-01-09 04:05:04,359 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 94 check-sat command(s) and asserted 737 of 1032 statements. [2025-01-09 04:05:04,359 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 94 check-sat command(s) [2025-01-09 04:05:04,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:04,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-09 04:05:04,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 63781 backedges. 24196 proven. 1865 refuted. 0 times theorem prover too weak. 37720 trivial. 0 not checked. [2025-01-09 04:05:04,481 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:09,078 INFO L134 CoverageAnalysis]: Checked inductivity of 63781 backedges. 6866 proven. 3648 refuted. 0 times theorem prover too weak. 53267 trivial. 0 not checked. [2025-01-09 04:05:09,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158770855] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:09,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:09,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 27] total 35 [2025-01-09 04:05:09,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976632362] [2025-01-09 04:05:09,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:09,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-01-09 04:05:09,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:09,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-01-09 04:05:09,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=967, Unknown=0, NotChecked=0, Total=1190 [2025-01-09 04:05:09,085 INFO L87 Difference]: Start difference. First operand 110 states and 157 transitions. Second operand has 35 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 35 states have internal predecessors, (109), 27 states have call successors, (34), 2 states have call predecessors, (34), 15 states have return successors, (45), 17 states have call predecessors, (45), 27 states have call successors, (45) [2025-01-09 04:05:09,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:09,555 INFO L93 Difference]: Finished difference Result 239 states and 364 transitions. [2025-01-09 04:05:09,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-01-09 04:05:09,556 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 35 states have internal predecessors, (109), 27 states have call successors, (34), 2 states have call predecessors, (34), 15 states have return successors, (45), 17 states have call predecessors, (45), 27 states have call successors, (45) Word has length 1032 [2025-01-09 04:05:09,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:09,558 INFO L225 Difference]: With dead ends: 239 [2025-01-09 04:05:09,559 INFO L226 Difference]: Without dead ends: 132 [2025-01-09 04:05:09,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2110 GetRequests, 2044 SyntacticMatches, 14 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=740, Invalid=2122, Unknown=0, NotChecked=0, Total=2862 [2025-01-09 04:05:09,560 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 82 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:09,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 223 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 04:05:09,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-01-09 04:05:09,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 99. [2025-01-09 04:05:09,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 68 states have internal predecessors, (70), 19 states have call successors, (19), 13 states have call predecessors, (19), 10 states have return successors, (52), 17 states have call predecessors, (52), 19 states have call successors, (52) [2025-01-09 04:05:09,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 141 transitions. [2025-01-09 04:05:09,573 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 141 transitions. Word has length 1032 [2025-01-09 04:05:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:09,574 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 141 transitions. [2025-01-09 04:05:09,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 35 states have internal predecessors, (109), 27 states have call successors, (34), 2 states have call predecessors, (34), 15 states have return successors, (45), 17 states have call predecessors, (45), 27 states have call successors, (45) [2025-01-09 04:05:09,574 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 141 transitions. [2025-01-09 04:05:09,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2025-01-09 04:05:09,578 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:09,578 INFO L218 NwaCegarLoop]: trace histogram [135, 135, 109, 67, 67, 67, 67, 67, 67, 67, 42, 26, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:09,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-09 04:05:09,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:09,779 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:09,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:09,779 INFO L85 PathProgramCache]: Analyzing trace with hash -586878367, now seen corresponding path program 12 times [2025-01-09 04:05:09,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:09,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641562777] [2025-01-09 04:05:09,779 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:05:09,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:09,796 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 923 statements into 116 equivalence classes. [2025-01-09 04:05:09,825 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) and asserted 243 of 923 statements. [2025-01-09 04:05:09,825 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2025-01-09 04:05:09,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:10,001 INFO L134 CoverageAnalysis]: Checked inductivity of 50910 backedges. 1363 proven. 4292 refuted. 0 times theorem prover too weak. 45255 trivial. 0 not checked. [2025-01-09 04:05:10,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:10,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641562777] [2025-01-09 04:05:10,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641562777] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:10,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987859540] [2025-01-09 04:05:10,002 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 04:05:10,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:10,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:10,005 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:10,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 04:05:10,195 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 923 statements into 116 equivalence classes. [2025-01-09 04:05:10,249 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) and asserted 243 of 923 statements. [2025-01-09 04:05:10,249 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2025-01-09 04:05:10,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:10,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 04:05:10,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:10,319 INFO L134 CoverageAnalysis]: Checked inductivity of 50910 backedges. 1363 proven. 4292 refuted. 0 times theorem prover too weak. 45255 trivial. 0 not checked. [2025-01-09 04:05:10,319 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 50910 backedges. 1371 proven. 4361 refuted. 0 times theorem prover too weak. 45178 trivial. 0 not checked. [2025-01-09 04:05:13,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987859540] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:13,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:13,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 21 [2025-01-09 04:05:13,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004314474] [2025-01-09 04:05:13,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:13,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 04:05:13,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:13,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 04:05:13,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2025-01-09 04:05:13,208 INFO L87 Difference]: Start difference. First operand 99 states and 141 transitions. Second operand has 21 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 21 states have internal predecessors, (65), 17 states have call successors, (20), 1 states have call predecessors, (20), 9 states have return successors, (26), 11 states have call predecessors, (26), 17 states have call successors, (26) [2025-01-09 04:05:13,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:13,338 INFO L93 Difference]: Finished difference Result 111 states and 169 transitions. [2025-01-09 04:05:13,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 04:05:13,338 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 21 states have internal predecessors, (65), 17 states have call successors, (20), 1 states have call predecessors, (20), 9 states have return successors, (26), 11 states have call predecessors, (26), 17 states have call successors, (26) Word has length 923 [2025-01-09 04:05:13,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:13,340 INFO L225 Difference]: With dead ends: 111 [2025-01-09 04:05:13,340 INFO L226 Difference]: Without dead ends: 107 [2025-01-09 04:05:13,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1870 GetRequests, 1836 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2025-01-09 04:05:13,341 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 78 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:13,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 117 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:13,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-01-09 04:05:13,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2025-01-09 04:05:13,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 72 states have (on average 1.0138888888888888) internal successors, (73), 71 states have internal predecessors, (73), 20 states have call successors, (20), 13 states have call predecessors, (20), 11 states have return successors, (63), 19 states have call predecessors, (63), 20 states have call successors, (63) [2025-01-09 04:05:13,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 156 transitions. [2025-01-09 04:05:13,358 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 156 transitions. Word has length 923 [2025-01-09 04:05:13,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:13,359 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 156 transitions. [2025-01-09 04:05:13,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 21 states have internal predecessors, (65), 17 states have call successors, (20), 1 states have call predecessors, (20), 9 states have return successors, (26), 11 states have call predecessors, (26), 17 states have call successors, (26) [2025-01-09 04:05:13,359 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 156 transitions. [2025-01-09 04:05:13,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1278 [2025-01-09 04:05:13,367 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:13,367 INFO L218 NwaCegarLoop]: trace histogram [187, 187, 151, 93, 93, 93, 93, 93, 93, 93, 58, 36, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:13,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-09 04:05:13,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:13,568 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:13,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:13,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1689267575, now seen corresponding path program 13 times [2025-01-09 04:05:13,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:13,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676368758] [2025-01-09 04:05:13,568 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:05:13,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:13,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1277 statements into 1 equivalence classes. [2025-01-09 04:05:13,728 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1277 of 1277 statements. [2025-01-09 04:05:13,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:13,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 98001 backedges. 3051 proven. 10112 refuted. 0 times theorem prover too weak. 84838 trivial. 0 not checked. [2025-01-09 04:05:15,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:15,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676368758] [2025-01-09 04:05:15,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676368758] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:15,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503627687] [2025-01-09 04:05:15,306 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 04:05:15,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:15,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:15,307 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:15,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 04:05:15,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1277 statements into 1 equivalence classes. [2025-01-09 04:05:15,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1277 of 1277 statements. [2025-01-09 04:05:15,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:05:15,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:15,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 2854 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 04:05:15,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 98001 backedges. 1133 proven. 8809 refuted. 0 times theorem prover too weak. 88059 trivial. 0 not checked. [2025-01-09 04:05:15,841 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 98001 backedges. 1133 proven. 8935 refuted. 0 times theorem prover too weak. 87933 trivial. 0 not checked. [2025-01-09 04:05:20,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503627687] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:20,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:20,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 23] total 37 [2025-01-09 04:05:20,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273798975] [2025-01-09 04:05:20,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:20,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-01-09 04:05:20,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:20,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-01-09 04:05:20,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2025-01-09 04:05:20,998 INFO L87 Difference]: Start difference. First operand 104 states and 156 transitions. Second operand has 37 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 37 states have internal predecessors, (109), 32 states have call successors, (36), 1 states have call predecessors, (36), 19 states have return successors, (52), 21 states have call predecessors, (52), 32 states have call successors, (52) [2025-01-09 04:05:21,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:21,872 INFO L93 Difference]: Finished difference Result 291 states and 606 transitions. [2025-01-09 04:05:21,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-01-09 04:05:21,872 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 37 states have internal predecessors, (109), 32 states have call successors, (36), 1 states have call predecessors, (36), 19 states have return successors, (52), 21 states have call predecessors, (52), 32 states have call successors, (52) Word has length 1277 [2025-01-09 04:05:21,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:21,875 INFO L225 Difference]: With dead ends: 291 [2025-01-09 04:05:21,876 INFO L226 Difference]: Without dead ends: 190 [2025-01-09 04:05:21,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2622 GetRequests, 2536 SyntacticMatches, 10 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1625 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1330, Invalid=4676, Unknown=0, NotChecked=0, Total=6006 [2025-01-09 04:05:21,878 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 194 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:21,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 307 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 04:05:21,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2025-01-09 04:05:21,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 164. [2025-01-09 04:05:21,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 117 states have (on average 1.017094017094017) internal successors, (119), 115 states have internal predecessors, (119), 34 states have call successors, (34), 27 states have call predecessors, (34), 12 states have return successors, (105), 21 states have call predecessors, (105), 34 states have call successors, (105) [2025-01-09 04:05:21,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 258 transitions. [2025-01-09 04:05:21,891 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 258 transitions. Word has length 1277 [2025-01-09 04:05:21,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:21,891 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 258 transitions. [2025-01-09 04:05:21,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 3.1142857142857143) internal successors, (109), 37 states have internal predecessors, (109), 32 states have call successors, (36), 1 states have call predecessors, (36), 19 states have return successors, (52), 21 states have call predecessors, (52), 32 states have call successors, (52) [2025-01-09 04:05:21,892 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 258 transitions. [2025-01-09 04:05:21,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3566 [2025-01-09 04:05:21,936 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:21,937 INFO L218 NwaCegarLoop]: trace histogram [523, 523, 423, 261, 261, 261, 261, 261, 261, 261, 162, 100, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:21,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-09 04:05:22,137 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,SelfDestructingSolverStorable15 [2025-01-09 04:05:22,138 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:22,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:22,140 INFO L85 PathProgramCache]: Analyzing trace with hash 522526173, now seen corresponding path program 14 times [2025-01-09 04:05:22,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:22,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031210977] [2025-01-09 04:05:22,140 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:05:22,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:22,187 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 3565 statements into 2 equivalence classes. [2025-01-09 04:05:23,060 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 3565 of 3565 statements. [2025-01-09 04:05:23,061 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:05:23,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 770985 backedges. 2597 proven. 29116 refuted. 0 times theorem prover too weak. 739272 trivial. 0 not checked. [2025-01-09 04:05:30,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:30,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031210977] [2025-01-09 04:05:30,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031210977] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:30,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220778029] [2025-01-09 04:05:30,844 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 04:05:30,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:30,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:30,846 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:30,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 04:05:31,199 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 3565 statements into 2 equivalence classes. [2025-01-09 04:05:31,800 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 3565 of 3565 statements. [2025-01-09 04:05:31,800 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 04:05:31,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:31,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 7934 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 04:05:31,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 770985 backedges. 2597 proven. 29116 refuted. 0 times theorem prover too weak. 739272 trivial. 0 not checked. [2025-01-09 04:05:32,042 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:42,846 INFO L134 CoverageAnalysis]: Checked inductivity of 770985 backedges. 2597 proven. 29271 refuted. 0 times theorem prover too weak. 739117 trivial. 0 not checked. [2025-01-09 04:05:42,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220778029] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:42,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:42,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 25] total 27 [2025-01-09 04:05:42,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954179303] [2025-01-09 04:05:42,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:42,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-09 04:05:42,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:42,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-09 04:05:42,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2025-01-09 04:05:42,850 INFO L87 Difference]: Start difference. First operand 164 states and 258 transitions. Second operand has 27 states, 25 states have (on average 3.28) internal successors, (82), 27 states have internal predecessors, (82), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) [2025-01-09 04:05:42,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:42,984 INFO L93 Difference]: Finished difference Result 173 states and 284 transitions. [2025-01-09 04:05:42,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 04:05:42,988 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.28) internal successors, (82), 27 states have internal predecessors, (82), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) Word has length 3565 [2025-01-09 04:05:42,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:42,992 INFO L225 Difference]: With dead ends: 173 [2025-01-09 04:05:42,992 INFO L226 Difference]: Without dead ends: 169 [2025-01-09 04:05:42,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7163 GetRequests, 7117 SyntacticMatches, 11 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=424, Invalid=908, Unknown=0, NotChecked=0, Total=1332 [2025-01-09 04:05:42,993 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 69 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:42,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 121 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:42,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2025-01-09 04:05:43,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2025-01-09 04:05:43,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 118 states have internal predecessors, (122), 35 states have call successors, (35), 27 states have call predecessors, (35), 13 states have return successors, (118), 23 states have call predecessors, (118), 35 states have call successors, (118) [2025-01-09 04:05:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 275 transitions. [2025-01-09 04:05:43,004 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 275 transitions. Word has length 3565 [2025-01-09 04:05:43,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:43,004 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 275 transitions. [2025-01-09 04:05:43,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.28) internal successors, (82), 27 states have internal predecessors, (82), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) [2025-01-09 04:05:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 275 transitions. [2025-01-09 04:05:43,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3171 [2025-01-09 04:05:43,066 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:43,067 INFO L218 NwaCegarLoop]: trace histogram [465, 465, 376, 232, 232, 232, 232, 232, 232, 232, 144, 89, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:43,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-09 04:05:43,268 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,SelfDestructingSolverStorable16 [2025-01-09 04:05:43,268 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:43,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:43,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1169407108, now seen corresponding path program 15 times [2025-01-09 04:05:43,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:43,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748017808] [2025-01-09 04:05:43,270 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:05:43,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:43,312 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 3170 statements into 399 equivalence classes. [2025-01-09 04:05:43,365 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) and asserted 403 of 3170 statements. [2025-01-09 04:05:43,365 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2025-01-09 04:05:43,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 609204 backedges. 3400 proven. 27297 refuted. 0 times theorem prover too weak. 578507 trivial. 0 not checked. [2025-01-09 04:05:43,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:05:43,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748017808] [2025-01-09 04:05:43,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748017808] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 04:05:43,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496438335] [2025-01-09 04:05:43,705 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 04:05:43,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 04:05:43,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:05:43,707 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 04:05:43,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 04:05:44,066 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 3170 statements into 399 equivalence classes. [2025-01-09 04:05:44,151 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) and asserted 403 of 3170 statements. [2025-01-09 04:05:44,151 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2025-01-09 04:05:44,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:05:44,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-09 04:05:44,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 04:05:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 609204 backedges. 3400 proven. 27297 refuted. 0 times theorem prover too weak. 578507 trivial. 0 not checked. [2025-01-09 04:05:44,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 04:05:54,652 INFO L134 CoverageAnalysis]: Checked inductivity of 609204 backedges. 3400 proven. 27484 refuted. 0 times theorem prover too weak. 578320 trivial. 0 not checked. [2025-01-09 04:05:54,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496438335] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 04:05:54,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 04:05:54,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 27] total 29 [2025-01-09 04:05:54,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155443747] [2025-01-09 04:05:54,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 04:05:54,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 04:05:54,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:05:54,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 04:05:54,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2025-01-09 04:05:54,656 INFO L87 Difference]: Start difference. First operand 169 states and 275 transitions. Second operand has 29 states, 27 states have (on average 3.259259259259259) internal successors, (88), 29 states have internal predecessors, (88), 26 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (37), 13 states have call predecessors, (37), 26 states have call successors, (37) [2025-01-09 04:05:54,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:05:54,898 INFO L93 Difference]: Finished difference Result 178 states and 303 transitions. [2025-01-09 04:05:54,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 04:05:54,899 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 3.259259259259259) internal successors, (88), 29 states have internal predecessors, (88), 26 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (37), 13 states have call predecessors, (37), 26 states have call successors, (37) Word has length 3170 [2025-01-09 04:05:54,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:05:54,903 INFO L225 Difference]: With dead ends: 178 [2025-01-09 04:05:54,903 INFO L226 Difference]: Without dead ends: 174 [2025-01-09 04:05:54,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6376 GetRequests, 6326 SyntacticMatches, 12 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=498, Invalid=1062, Unknown=0, NotChecked=0, Total=1560 [2025-01-09 04:05:54,904 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 267 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 04:05:54,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 132 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 04:05:54,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2025-01-09 04:05:54,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2025-01-09 04:05:54,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 123 states have (on average 1.016260162601626) internal successors, (125), 121 states have internal predecessors, (125), 36 states have call successors, (36), 27 states have call predecessors, (36), 14 states have return successors, (133), 25 states have call predecessors, (133), 36 states have call successors, (133) [2025-01-09 04:05:54,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 294 transitions. [2025-01-09 04:05:54,917 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 294 transitions. Word has length 3170 [2025-01-09 04:05:54,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:05:54,918 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 294 transitions. [2025-01-09 04:05:54,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 3.259259259259259) internal successors, (88), 29 states have internal predecessors, (88), 26 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (37), 13 states have call predecessors, (37), 26 states have call successors, (37) [2025-01-09 04:05:54,918 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 294 transitions. [2025-01-09 04:05:55,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7774 [2025-01-09 04:05:55,168 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:05:55,169 INFO L218 NwaCegarLoop]: trace histogram [1141, 1141, 923, 570, 570, 570, 570, 570, 570, 570, 353, 218, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:05:55,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-09 04:05:55,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-09 04:05:55,370 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:05:55,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:05:55,372 INFO L85 PathProgramCache]: Analyzing trace with hash 419659052, now seen corresponding path program 16 times [2025-01-09 04:05:55,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:05:55,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062721203] [2025-01-09 04:05:55,372 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 04:05:55,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:05:55,467 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 7773 statements into 2 equivalence classes. [2025-01-09 04:05:57,575 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 6629 of 7773 statements. [2025-01-09 04:05:57,575 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 04:05:57,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat