./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-12.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa3ed2bff1e00689dc57bff3bbe0e8e59870786f79090b55555fbd2dfd8e804d --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 02:13:20,950 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 02:13:20,998 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 02:13:21,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 02:13:21,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 02:13:21,025 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 02:13:21,027 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 02:13:21,027 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 02:13:21,027 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 02:13:21,028 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 02:13:21,028 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 02:13:21,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 02:13:21,028 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 02:13:21,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 02:13:21,029 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 02:13:21,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 02:13:21,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 02:13:21,029 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 02:13:21,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 02:13:21,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 02:13:21,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 02:13:21,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 02:13:21,030 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 02:13:21,030 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 02:13:21,030 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 02:13:21,030 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 02:13:21,030 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 02:13:21,030 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 02:13:21,030 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 02:13:21,030 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 02:13:21,030 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 02:13:21,031 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 02:13:21,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:13:21,031 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 02:13:21,031 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 02:13:21,031 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 02:13:21,031 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 02:13:21,031 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 02:13:21,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 02:13:21,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 02:13:21,032 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 02:13:21,032 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 02:13:21,032 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 02:13:21,032 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 -> aa3ed2bff1e00689dc57bff3bbe0e8e59870786f79090b55555fbd2dfd8e804d [2025-02-06 02:13:21,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 02:13:21,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 02:13:21,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 02:13:21,298 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 02:13:21,299 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 02:13:21,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-12.i [2025-02-06 02:13:22,442 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c6248c0f1/188cc83403b04fc88102e4d772e43402/FLAGf258f33ae [2025-02-06 02:13:22,722 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 02:13:22,727 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-12.i [2025-02-06 02:13:22,738 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c6248c0f1/188cc83403b04fc88102e4d772e43402/FLAGf258f33ae [2025-02-06 02:13:23,019 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c6248c0f1/188cc83403b04fc88102e4d772e43402 [2025-02-06 02:13:23,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 02:13:23,025 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 02:13:23,026 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 02:13:23,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 02:13:23,030 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 02:13:23,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:13:23" (1/1) ... [2025-02-06 02:13:23,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c0d2b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:13:23, skipping insertion in model container [2025-02-06 02:13:23,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:13:23" (1/1) ... [2025-02-06 02:13:23,061 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 02:13:23,161 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/hardness-nfm22/hardness_operatoramount_amount250_file-12.i[916,929] [2025-02-06 02:13:23,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:13:23,307 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 02:13:23,315 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/hardness-nfm22/hardness_operatoramount_amount250_file-12.i[916,929] [2025-02-06 02:13:23,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:13:23,391 INFO L204 MainTranslator]: Completed translation [2025-02-06 02:13:23,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:13:23 WrapperNode [2025-02-06 02:13:23,392 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 02:13:23,394 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 02:13:23,394 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 02:13:23,394 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 02:13:23,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:13:23" (1/1) ... [2025-02-06 02:13:23,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:13:23" (1/1) ... [2025-02-06 02:13:23,455 INFO L138 Inliner]: procedures = 26, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 463 [2025-02-06 02:13:23,456 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 02:13:23,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 02:13:23,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 02:13:23,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 02:13:23,462 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:13:23" (1/1) ... [2025-02-06 02:13:23,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:13:23" (1/1) ... [2025-02-06 02:13:23,476 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:13:23" (1/1) ... [2025-02-06 02:13:23,510 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 02:13:23,511 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:13:23" (1/1) ... [2025-02-06 02:13:23,511 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:13:23" (1/1) ... [2025-02-06 02:13:23,530 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:13:23" (1/1) ... [2025-02-06 02:13:23,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:13:23" (1/1) ... [2025-02-06 02:13:23,544 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:13:23" (1/1) ... [2025-02-06 02:13:23,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:13:23" (1/1) ... [2025-02-06 02:13:23,564 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 02:13:23,564 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 02:13:23,564 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 02:13:23,564 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 02:13:23,565 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:13:23" (1/1) ... [2025-02-06 02:13:23,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:13:23,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:13:23,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 02:13:23,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 02:13:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 02:13:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 02:13:23,614 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 02:13:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 02:13:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 02:13:23,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 02:13:23,705 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 02:13:23,707 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 02:13:24,269 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L351: havoc property_#t~ite43#1;havoc property_#t~ite42#1;havoc property_#t~bitwise39#1;havoc property_#t~ite41#1;havoc property_#t~bitwise40#1;havoc property_#t~short44#1;havoc property_#t~ite49#1;havoc property_#t~ite48#1;havoc property_#t~bitwise45#1;havoc property_#t~ite47#1;havoc property_#t~bitwise46#1;havoc property_#t~short50#1; [2025-02-06 02:13:24,333 INFO L? ?]: Removed 71 outVars from TransFormulas that were not future-live. [2025-02-06 02:13:24,333 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 02:13:24,386 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 02:13:24,386 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 02:13:24,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:13:24 BoogieIcfgContainer [2025-02-06 02:13:24,387 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 02:13:24,388 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 02:13:24,388 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 02:13:24,392 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 02:13:24,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:13:23" (1/3) ... [2025-02-06 02:13:24,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106d156f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:13:24, skipping insertion in model container [2025-02-06 02:13:24,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:13:23" (2/3) ... [2025-02-06 02:13:24,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106d156f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:13:24, skipping insertion in model container [2025-02-06 02:13:24,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:13:24" (3/3) ... [2025-02-06 02:13:24,394 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-12.i [2025-02-06 02:13:24,404 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 02:13:24,407 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-12.i that has 2 procedures, 187 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 02:13:24,451 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 02:13:24,460 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;@51adc1f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 02:13:24,461 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 02:13:24,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 135 states have (on average 1.4666666666666666) internal successors, (198), 136 states have internal predecessors, (198), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-02-06 02:13:24,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2025-02-06 02:13:24,481 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:13:24,481 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:13:24,482 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:13:24,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:13:24,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1948502216, now seen corresponding path program 1 times [2025-02-06 02:13:24,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:13:24,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140038380] [2025-02-06 02:13:24,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:13:24,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:13:24,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-02-06 02:13:24,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-02-06 02:13:24,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:13:24,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:13:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-02-06 02:13:25,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:13:25,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140038380] [2025-02-06 02:13:25,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140038380] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:13:25,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:13:25,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:13:25,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633091377] [2025-02-06 02:13:25,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:13:25,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:13:25,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:13:25,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:13:25,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:13:25,790 INFO L87 Difference]: Start difference. First operand has 187 states, 135 states have (on average 1.4666666666666666) internal successors, (198), 136 states have internal predecessors, (198), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-06 02:13:26,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:13:26,093 INFO L93 Difference]: Finished difference Result 513 states and 920 transitions. [2025-02-06 02:13:26,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:13:26,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 317 [2025-02-06 02:13:26,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:13:26,102 INFO L225 Difference]: With dead ends: 513 [2025-02-06 02:13:26,102 INFO L226 Difference]: Without dead ends: 329 [2025-02-06 02:13:26,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:13:26,108 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 171 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:13:26,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 643 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 02:13:26,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2025-02-06 02:13:26,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 326. [2025-02-06 02:13:26,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 225 states have (on average 1.4177777777777778) internal successors, (319), 225 states have internal predecessors, (319), 98 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2025-02-06 02:13:26,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 515 transitions. [2025-02-06 02:13:26,205 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 515 transitions. Word has length 317 [2025-02-06 02:13:26,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:13:26,207 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 515 transitions. [2025-02-06 02:13:26,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-06 02:13:26,207 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 515 transitions. [2025-02-06 02:13:26,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2025-02-06 02:13:26,215 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:13:26,215 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:13:26,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 02:13:26,216 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:13:26,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:13:26,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1320973081, now seen corresponding path program 1 times [2025-02-06 02:13:26,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:13:26,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864221523] [2025-02-06 02:13:26,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:13:26,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:13:26,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-02-06 02:13:26,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-02-06 02:13:26,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:13:26,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:13:27,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-02-06 02:13:27,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:13:27,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864221523] [2025-02-06 02:13:27,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864221523] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:13:27,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:13:27,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 02:13:27,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207728787] [2025-02-06 02:13:27,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:13:27,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 02:13:27,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:13:27,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 02:13:27,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:13:27,304 INFO L87 Difference]: Start difference. First operand 326 states and 515 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-06 02:13:27,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:13:27,574 INFO L93 Difference]: Finished difference Result 1011 states and 1577 transitions. [2025-02-06 02:13:27,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 02:13:27,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 317 [2025-02-06 02:13:27,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:13:27,581 INFO L225 Difference]: With dead ends: 1011 [2025-02-06 02:13:27,582 INFO L226 Difference]: Without dead ends: 688 [2025-02-06 02:13:27,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:13:27,586 INFO L435 NwaCegarLoop]: 283 mSDtfsCounter, 254 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:13:27,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 799 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 02:13:27,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2025-02-06 02:13:27,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 554. [2025-02-06 02:13:27,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 419 states have (on average 1.4439140811455846) internal successors, (605), 421 states have internal predecessors, (605), 130 states have call successors, (130), 4 states have call predecessors, (130), 4 states have return successors, (130), 128 states have call predecessors, (130), 130 states have call successors, (130) [2025-02-06 02:13:27,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 865 transitions. [2025-02-06 02:13:27,632 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 865 transitions. Word has length 317 [2025-02-06 02:13:27,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:13:27,633 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 865 transitions. [2025-02-06 02:13:27,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-02-06 02:13:27,633 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 865 transitions. [2025-02-06 02:13:27,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2025-02-06 02:13:27,636 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:13:27,636 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:13:27,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 02:13:27,638 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:13:27,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:13:27,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1258900936, now seen corresponding path program 1 times [2025-02-06 02:13:27,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:13:27,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030771589] [2025-02-06 02:13:27,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:13:27,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:13:27,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-02-06 02:13:28,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-02-06 02:13:28,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:13:28,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:13:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 27 proven. 117 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2025-02-06 02:13:28,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:13:28,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030771589] [2025-02-06 02:13:28,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030771589] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:13:28,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182243713] [2025-02-06 02:13:28,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:13:28,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:13:28,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:13:28,554 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:13:28,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 02:13:28,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-02-06 02:13:28,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-02-06 02:13:28,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:13:28,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:13:28,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 02:13:28,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:13:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2128 proven. 96 refuted. 0 times theorem prover too weak. 2480 trivial. 0 not checked. [2025-02-06 02:13:29,202 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:13:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2025-02-06 02:13:29,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182243713] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:13:29,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:13:29,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 14 [2025-02-06 02:13:29,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949080405] [2025-02-06 02:13:29,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:13:29,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 02:13:29,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:13:29,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 02:13:29,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-02-06 02:13:29,610 INFO L87 Difference]: Start difference. First operand 554 states and 865 transitions. Second operand has 14 states, 14 states have (on average 9.928571428571429) internal successors, (139), 14 states have internal predecessors, (139), 4 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) [2025-02-06 02:13:31,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:13:31,518 INFO L93 Difference]: Finished difference Result 1512 states and 2337 transitions. [2025-02-06 02:13:31,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-02-06 02:13:31,519 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.928571428571429) internal successors, (139), 14 states have internal predecessors, (139), 4 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) Word has length 317 [2025-02-06 02:13:31,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:13:31,525 INFO L225 Difference]: With dead ends: 1512 [2025-02-06 02:13:31,525 INFO L226 Difference]: Without dead ends: 961 [2025-02-06 02:13:31,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 632 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=1922, Unknown=0, NotChecked=0, Total=2450 [2025-02-06 02:13:31,527 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 1758 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1776 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-06 02:13:31,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1776 Valid, 2300 Invalid, 2167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 1523 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-06 02:13:31,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2025-02-06 02:13:31,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 685. [2025-02-06 02:13:31,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 512 states have (on average 1.4140625) internal successors, (724), 513 states have internal predecessors, (724), 163 states have call successors, (163), 9 states have call predecessors, (163), 9 states have return successors, (163), 162 states have call predecessors, (163), 163 states have call successors, (163) [2025-02-06 02:13:31,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1050 transitions. [2025-02-06 02:13:31,588 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1050 transitions. Word has length 317 [2025-02-06 02:13:31,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:13:31,588 INFO L471 AbstractCegarLoop]: Abstraction has 685 states and 1050 transitions. [2025-02-06 02:13:31,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.928571428571429) internal successors, (139), 14 states have internal predecessors, (139), 4 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) [2025-02-06 02:13:31,588 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1050 transitions. [2025-02-06 02:13:31,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2025-02-06 02:13:31,591 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:13:31,591 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:13:31,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 02:13:31,795 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 [2025-02-06 02:13:31,795 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:13:31,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:13:31,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1047648201, now seen corresponding path program 1 times [2025-02-06 02:13:31,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:13:31,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133063940] [2025-02-06 02:13:31,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:13:31,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:13:31,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 319 statements into 1 equivalence classes. [2025-02-06 02:13:31,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 319 of 319 statements. [2025-02-06 02:13:31,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:13:31,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:13:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-02-06 02:13:32,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:13:32,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133063940] [2025-02-06 02:13:32,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133063940] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:13:32,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:13:32,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 02:13:32,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965390] [2025-02-06 02:13:32,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:13:32,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 02:13:32,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:13:32,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 02:13:32,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 02:13:32,062 INFO L87 Difference]: Start difference. First operand 685 states and 1050 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2025-02-06 02:13:32,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:13:32,381 INFO L93 Difference]: Finished difference Result 2020 states and 3116 transitions. [2025-02-06 02:13:32,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 02:13:32,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 319 [2025-02-06 02:13:32,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:13:32,390 INFO L225 Difference]: With dead ends: 2020 [2025-02-06 02:13:32,390 INFO L226 Difference]: Without dead ends: 1449 [2025-02-06 02:13:32,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-02-06 02:13:32,393 INFO L435 NwaCegarLoop]: 377 mSDtfsCounter, 376 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:13:32,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 1409 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 02:13:32,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2025-02-06 02:13:32,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1183. [2025-02-06 02:13:32,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 891 states have (on average 1.4197530864197532) internal successors, (1265), 893 states have internal predecessors, (1265), 277 states have call successors, (277), 14 states have call predecessors, (277), 14 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) [2025-02-06 02:13:32,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1819 transitions. [2025-02-06 02:13:32,497 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1819 transitions. Word has length 319 [2025-02-06 02:13:32,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:13:32,500 INFO L471 AbstractCegarLoop]: Abstraction has 1183 states and 1819 transitions. [2025-02-06 02:13:32,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2025-02-06 02:13:32,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1819 transitions. [2025-02-06 02:13:32,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2025-02-06 02:13:32,505 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:13:32,506 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:13:32,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 02:13:32,506 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:13:32,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:13:32,506 INFO L85 PathProgramCache]: Analyzing trace with hash 717882440, now seen corresponding path program 1 times [2025-02-06 02:13:32,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:13:32,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256099447] [2025-02-06 02:13:32,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:13:32,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:13:32,531 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 319 statements into 1 equivalence classes. [2025-02-06 02:13:32,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 319 of 319 statements. [2025-02-06 02:13:32,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:13:32,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:13:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2025-02-06 02:13:33,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:13:33,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256099447] [2025-02-06 02:13:33,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256099447] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:13:33,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144935757] [2025-02-06 02:13:33,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:13:33,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:13:33,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:13:33,200 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:13:33,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 02:13:33,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 319 statements into 1 equivalence classes. [2025-02-06 02:13:33,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 319 of 319 statements. [2025-02-06 02:13:33,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:13:33,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:13:33,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 02:13:33,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:13:33,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2162 proven. 186 refuted. 0 times theorem prover too weak. 2356 trivial. 0 not checked. [2025-02-06 02:13:33,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:13:34,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2025-02-06 02:13:34,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144935757] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:13:34,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:13:34,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 6] total 13 [2025-02-06 02:13:34,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012055568] [2025-02-06 02:13:34,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:13:34,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 02:13:34,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:13:34,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 02:13:34,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2025-02-06 02:13:34,027 INFO L87 Difference]: Start difference. First operand 1183 states and 1819 transitions. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 3 states have call successors, (81), 3 states have call predecessors, (81), 5 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) [2025-02-06 02:13:34,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:13:34,445 INFO L93 Difference]: Finished difference Result 2173 states and 3323 transitions. [2025-02-06 02:13:34,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 02:13:34,447 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 3 states have call successors, (81), 3 states have call predecessors, (81), 5 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) Word has length 319 [2025-02-06 02:13:34,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:13:34,453 INFO L225 Difference]: With dead ends: 2173 [2025-02-06 02:13:34,455 INFO L226 Difference]: Without dead ends: 1221 [2025-02-06 02:13:34,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 629 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2025-02-06 02:13:34,457 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 370 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 02:13:34,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 1045 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 02:13:34,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2025-02-06 02:13:34,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1203. [2025-02-06 02:13:34,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 906 states have (on average 1.4061810154525387) internal successors, (1274), 908 states have internal predecessors, (1274), 277 states have call successors, (277), 19 states have call predecessors, (277), 19 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) [2025-02-06 02:13:34,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1828 transitions. [2025-02-06 02:13:34,529 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1828 transitions. Word has length 319 [2025-02-06 02:13:34,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:13:34,529 INFO L471 AbstractCegarLoop]: Abstraction has 1203 states and 1828 transitions. [2025-02-06 02:13:34,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 3 states have call successors, (81), 3 states have call predecessors, (81), 5 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) [2025-02-06 02:13:34,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1828 transitions. [2025-02-06 02:13:34,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2025-02-06 02:13:34,533 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:13:34,533 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:13:34,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 02:13:34,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:13:34,734 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:13:34,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:13:34,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1297250605, now seen corresponding path program 1 times [2025-02-06 02:13:34,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:13:34,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652817225] [2025-02-06 02:13:34,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:13:34,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:13:34,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 320 statements into 1 equivalence classes. [2025-02-06 02:13:35,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 320 of 320 statements. [2025-02-06 02:13:35,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:13:35,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:13:35,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2025-02-06 02:13:35,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:13:35,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652817225] [2025-02-06 02:13:35,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652817225] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:13:35,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115943857] [2025-02-06 02:13:35,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:13:35,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:13:35,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:13:35,383 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:13:35,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 02:13:35,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 320 statements into 1 equivalence classes. [2025-02-06 02:13:35,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 320 of 320 statements. [2025-02-06 02:13:35,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:13:35,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:13:35,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-02-06 02:13:35,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:13:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 3106 proven. 405 refuted. 0 times theorem prover too weak. 1193 trivial. 0 not checked. [2025-02-06 02:13:37,776 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:13:38,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 402 proven. 288 refuted. 0 times theorem prover too weak. 4014 trivial. 0 not checked. [2025-02-06 02:13:38,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115943857] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:13:38,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:13:38,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 26, 19] total 46 [2025-02-06 02:13:38,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001210082] [2025-02-06 02:13:38,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:13:38,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-02-06 02:13:38,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:13:38,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-02-06 02:13:38,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=1484, Unknown=0, NotChecked=0, Total=2070 [2025-02-06 02:13:38,725 INFO L87 Difference]: Start difference. First operand 1203 states and 1828 transitions. Second operand has 46 states, 44 states have (on average 4.818181818181818) internal successors, (212), 41 states have internal predecessors, (212), 14 states have call successors, (110), 8 states have call predecessors, (110), 15 states have return successors, (112), 14 states have call predecessors, (112), 14 states have call successors, (112) [2025-02-06 02:13:41,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:13:41,548 INFO L93 Difference]: Finished difference Result 3715 states and 5351 transitions. [2025-02-06 02:13:41,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2025-02-06 02:13:41,549 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 4.818181818181818) internal successors, (212), 41 states have internal predecessors, (212), 14 states have call successors, (110), 8 states have call predecessors, (110), 15 states have return successors, (112), 14 states have call predecessors, (112), 14 states have call successors, (112) Word has length 320 [2025-02-06 02:13:41,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:13:41,563 INFO L225 Difference]: With dead ends: 3715 [2025-02-06 02:13:41,563 INFO L226 Difference]: Without dead ends: 3207 [2025-02-06 02:13:41,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 609 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3042 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2553, Invalid=7953, Unknown=0, NotChecked=0, Total=10506 [2025-02-06 02:13:41,568 INFO L435 NwaCegarLoop]: 317 mSDtfsCounter, 1088 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 2588 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 3151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 2588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-06 02:13:41,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 2408 Invalid, 3151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 2588 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-06 02:13:41,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3207 states. [2025-02-06 02:13:41,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3207 to 1669. [2025-02-06 02:13:41,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1271 states have (on average 1.3556254917387884) internal successors, (1723), 1275 states have internal predecessors, (1723), 329 states have call successors, (329), 68 states have call predecessors, (329), 68 states have return successors, (329), 325 states have call predecessors, (329), 329 states have call successors, (329) [2025-02-06 02:13:41,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2381 transitions. [2025-02-06 02:13:41,695 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2381 transitions. Word has length 320 [2025-02-06 02:13:41,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:13:41,696 INFO L471 AbstractCegarLoop]: Abstraction has 1669 states and 2381 transitions. [2025-02-06 02:13:41,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 4.818181818181818) internal successors, (212), 41 states have internal predecessors, (212), 14 states have call successors, (110), 8 states have call predecessors, (110), 15 states have return successors, (112), 14 states have call predecessors, (112), 14 states have call successors, (112) [2025-02-06 02:13:41,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2381 transitions. [2025-02-06 02:13:41,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2025-02-06 02:13:41,698 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:13:41,699 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:13:41,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 02:13:41,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:13:41,903 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:13:41,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:13:41,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1774435650, now seen corresponding path program 1 times [2025-02-06 02:13:41,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:13:41,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670134827] [2025-02-06 02:13:41,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:13:41,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:13:41,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 321 statements into 1 equivalence classes. [2025-02-06 02:13:42,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 321 of 321 statements. [2025-02-06 02:13:42,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:13:42,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:13:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 417 proven. 465 refuted. 0 times theorem prover too weak. 3822 trivial. 0 not checked. [2025-02-06 02:13:43,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:13:43,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670134827] [2025-02-06 02:13:43,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670134827] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:13:43,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565085312] [2025-02-06 02:13:43,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:13:43,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:13:43,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:13:43,753 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:13:43,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 02:13:43,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 321 statements into 1 equivalence classes. [2025-02-06 02:13:44,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 321 of 321 statements. [2025-02-06 02:13:44,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:13:44,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:13:44,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 60 conjuncts are in the unsatisfiable core [2025-02-06 02:13:44,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:13:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2831 proven. 648 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2025-02-06 02:13:47,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:14:01,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565085312] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:14:01,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 02:14:01,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 26] total 38 [2025-02-06 02:14:01,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518935387] [2025-02-06 02:14:01,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 02:14:01,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-02-06 02:14:01,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:14:01,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-02-06 02:14:01,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=1800, Unknown=3, NotChecked=0, Total=2162 [2025-02-06 02:14:01,590 INFO L87 Difference]: Start difference. First operand 1669 states and 2381 transitions. Second operand has 38 states, 35 states have (on average 3.942857142857143) internal successors, (138), 32 states have internal predecessors, (138), 15 states have call successors, (98), 9 states have call predecessors, (98), 12 states have return successors, (98), 15 states have call predecessors, (98), 15 states have call successors, (98)