./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.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-24.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 11fbe230916924754384b4d5f209e2f8e8933dc585a70287035d014e0032f60d --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 02:14:58,447 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 02:14:58,502 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 02:14:58,508 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 02:14:58,508 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 02:14:58,527 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 02:14:58,529 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 02:14:58,529 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 02:14:58,529 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 02:14:58,529 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 02:14:58,529 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 02:14:58,530 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 02:14:58,530 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 02:14:58,530 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 02:14:58,531 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 02:14:58,531 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:14:58,531 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 02:14:58,531 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 02:14:58,532 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 02:14:58,532 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 02:14:58,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 02:14:58,532 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 02:14:58,532 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 02:14:58,532 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 02:14:58,532 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 02:14:58,532 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 -> 11fbe230916924754384b4d5f209e2f8e8933dc585a70287035d014e0032f60d [2025-02-06 02:14:58,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 02:14:58,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 02:14:58,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 02:14:58,761 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 02:14:58,761 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 02:14:58,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i [2025-02-06 02:14:59,857 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5792ee0b6/509a9faf9fb04fcd974b0e261d1e384f/FLAGeab4c3037 [2025-02-06 02:15:00,114 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 02:15:00,118 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i [2025-02-06 02:15:00,125 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5792ee0b6/509a9faf9fb04fcd974b0e261d1e384f/FLAGeab4c3037 [2025-02-06 02:15:00,134 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5792ee0b6/509a9faf9fb04fcd974b0e261d1e384f [2025-02-06 02:15:00,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 02:15:00,136 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 02:15:00,137 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 02:15:00,137 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 02:15:00,140 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 02:15:00,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:15:00" (1/1) ... [2025-02-06 02:15:00,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@655b42f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:00, skipping insertion in model container [2025-02-06 02:15:00,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:15:00" (1/1) ... [2025-02-06 02:15:00,165 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 02:15:00,264 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-24.i[916,929] [2025-02-06 02:15:00,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:15:00,389 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 02:15:00,398 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-24.i[916,929] [2025-02-06 02:15:00,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:15:00,462 INFO L204 MainTranslator]: Completed translation [2025-02-06 02:15:00,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:00 WrapperNode [2025-02-06 02:15:00,463 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 02:15:00,464 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 02:15:00,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 02:15:00,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 02:15:00,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:00" (1/1) ... [2025-02-06 02:15:00,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:00" (1/1) ... [2025-02-06 02:15:00,506 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 429 [2025-02-06 02:15:00,506 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 02:15:00,507 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 02:15:00,507 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 02:15:00,507 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 02:15:00,514 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:00" (1/1) ... [2025-02-06 02:15:00,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:00" (1/1) ... [2025-02-06 02:15:00,522 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:00" (1/1) ... [2025-02-06 02:15:00,549 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 02:15:00,549 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:00" (1/1) ... [2025-02-06 02:15:00,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:00" (1/1) ... [2025-02-06 02:15:00,562 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:00" (1/1) ... [2025-02-06 02:15:00,564 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:00" (1/1) ... [2025-02-06 02:15:00,567 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:00" (1/1) ... [2025-02-06 02:15:00,570 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:00" (1/1) ... [2025-02-06 02:15:00,577 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 02:15:00,579 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 02:15:00,579 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 02:15:00,579 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 02:15:00,579 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:00" (1/1) ... [2025-02-06 02:15:00,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:15:00,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:15:00,604 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 02:15:00,607 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 02:15:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 02:15:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 02:15:00,624 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 02:15:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 02:15:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 02:15:00,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 02:15:00,706 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 02:15:00,707 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 02:15:01,168 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L371: havoc property_#t~ite35#1;havoc property_#t~bitwise34#1;havoc property_#t~short36#1;havoc property_#t~ite38#1;havoc property_#t~bitwise37#1;havoc property_#t~short39#1;havoc property_#t~ite41#1;havoc property_#t~bitwise40#1;havoc property_#t~short42#1; [2025-02-06 02:15:01,228 INFO L? ?]: Removed 63 outVars from TransFormulas that were not future-live. [2025-02-06 02:15:01,230 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 02:15:01,246 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 02:15:01,248 INFO L337 CfgBuilder]: Removed 2 assume(true) statements. [2025-02-06 02:15:01,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:15:01 BoogieIcfgContainer [2025-02-06 02:15:01,248 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 02:15:01,250 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 02:15:01,250 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 02:15:01,253 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 02:15:01,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:15:00" (1/3) ... [2025-02-06 02:15:01,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3626d62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:15:01, skipping insertion in model container [2025-02-06 02:15:01,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:00" (2/3) ... [2025-02-06 02:15:01,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3626d62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:15:01, skipping insertion in model container [2025-02-06 02:15:01,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:15:01" (3/3) ... [2025-02-06 02:15:01,256 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-24.i [2025-02-06 02:15:01,266 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 02:15:01,269 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-24.i that has 2 procedures, 181 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 02:15:01,319 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 02:15:01,327 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;@760e1cf7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 02:15:01,328 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 02:15:01,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 134 states have (on average 1.5149253731343284) internal successors, (203), 135 states have internal predecessors, (203), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-02-06 02:15:01,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2025-02-06 02:15:01,346 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:01,346 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:01,347 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:01,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:01,350 INFO L85 PathProgramCache]: Analyzing trace with hash 396823663, now seen corresponding path program 1 times [2025-02-06 02:15:01,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:01,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599125064] [2025-02-06 02:15:01,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:01,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:01,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 298 statements into 1 equivalence classes. [2025-02-06 02:15:01,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 298 of 298 statements. [2025-02-06 02:15:01,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:01,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:01,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2025-02-06 02:15:01,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:01,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599125064] [2025-02-06 02:15:01,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599125064] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:15:01,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522544765] [2025-02-06 02:15:01,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:01,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:15:01,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:15:01,708 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 02:15:01,710 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 02:15:01,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 298 statements into 1 equivalence classes. [2025-02-06 02:15:01,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 298 of 298 statements. [2025-02-06 02:15:01,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:01,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:01,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 02:15:01,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:15:01,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2025-02-06 02:15:01,946 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 02:15:01,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522544765] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:15:01,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:15:01,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 02:15:01,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390356233] [2025-02-06 02:15:01,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:15:01,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 02:15:01,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:01,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 02:15:01,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:15:01,974 INFO L87 Difference]: Start difference. First operand has 181 states, 134 states have (on average 1.5149253731343284) internal successors, (203), 135 states have internal predecessors, (203), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2025-02-06 02:15:02,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:02,011 INFO L93 Difference]: Finished difference Result 356 states and 621 transitions. [2025-02-06 02:15:02,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 02:15:02,013 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) Word has length 298 [2025-02-06 02:15:02,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:02,018 INFO L225 Difference]: With dead ends: 356 [2025-02-06 02:15:02,018 INFO L226 Difference]: Without dead ends: 178 [2025-02-06 02:15:02,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:15:02,024 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:02,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:15:02,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-02-06 02:15:02,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2025-02-06 02:15:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 132 states have (on average 1.5) internal successors, (198), 132 states have internal predecessors, (198), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-02-06 02:15:02,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 286 transitions. [2025-02-06 02:15:02,067 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 286 transitions. Word has length 298 [2025-02-06 02:15:02,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:02,068 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 286 transitions. [2025-02-06 02:15:02,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2025-02-06 02:15:02,068 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 286 transitions. [2025-02-06 02:15:02,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2025-02-06 02:15:02,071 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:02,071 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:02,080 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 02:15:02,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-06 02:15:02,272 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:02,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash 24568551, now seen corresponding path program 1 times [2025-02-06 02:15:02,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:02,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20730139] [2025-02-06 02:15:02,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:02,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:02,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 298 statements into 1 equivalence classes. [2025-02-06 02:15:02,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 298 of 298 statements. [2025-02-06 02:15:02,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:02,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-02-06 02:15:02,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:02,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20730139] [2025-02-06 02:15:02,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20730139] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:15:02,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:15:02,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:15:02,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694446010] [2025-02-06 02:15:02,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:15:02,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:15:02,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:02,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:15:02,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:15:02,677 INFO L87 Difference]: Start difference. First operand 178 states and 286 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-02-06 02:15:02,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:02,889 INFO L93 Difference]: Finished difference Result 529 states and 853 transitions. [2025-02-06 02:15:02,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:15:02,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 298 [2025-02-06 02:15:02,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:02,894 INFO L225 Difference]: With dead ends: 529 [2025-02-06 02:15:02,895 INFO L226 Difference]: Without dead ends: 354 [2025-02-06 02:15:02,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:15:02,896 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 219 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:02,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 809 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 02:15:02,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2025-02-06 02:15:02,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 263. [2025-02-06 02:15:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 172 states have (on average 1.4127906976744187) internal successors, (243), 172 states have internal predecessors, (243), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2025-02-06 02:15:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 419 transitions. [2025-02-06 02:15:02,952 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 419 transitions. Word has length 298 [2025-02-06 02:15:02,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:02,954 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 419 transitions. [2025-02-06 02:15:02,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-02-06 02:15:02,954 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 419 transitions. [2025-02-06 02:15:02,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2025-02-06 02:15:02,956 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:02,956 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:02,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 02:15:02,957 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:02,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:02,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1587446251, now seen corresponding path program 1 times [2025-02-06 02:15:02,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:02,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003022011] [2025-02-06 02:15:02,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:02,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:02,980 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 299 statements into 1 equivalence classes. [2025-02-06 02:15:03,012 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 299 of 299 statements. [2025-02-06 02:15:03,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:03,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:03,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-02-06 02:15:03,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:03,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003022011] [2025-02-06 02:15:03,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003022011] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:15:03,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:15:03,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:15:03,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270670930] [2025-02-06 02:15:03,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:15:03,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:15:03,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:03,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:15:03,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:15:03,150 INFO L87 Difference]: Start difference. First operand 263 states and 419 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-02-06 02:15:03,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:03,275 INFO L93 Difference]: Finished difference Result 597 states and 955 transitions. [2025-02-06 02:15:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:15:03,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 299 [2025-02-06 02:15:03,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:03,280 INFO L225 Difference]: With dead ends: 597 [2025-02-06 02:15:03,281 INFO L226 Difference]: Without dead ends: 422 [2025-02-06 02:15:03,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:15:03,282 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 250 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:03,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 663 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:15:03,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2025-02-06 02:15:03,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 318. [2025-02-06 02:15:03,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 227 states have (on average 1.4361233480176212) internal successors, (326), 227 states have internal predecessors, (326), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2025-02-06 02:15:03,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 502 transitions. [2025-02-06 02:15:03,318 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 502 transitions. Word has length 299 [2025-02-06 02:15:03,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:03,319 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 502 transitions. [2025-02-06 02:15:03,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-02-06 02:15:03,320 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 502 transitions. [2025-02-06 02:15:03,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2025-02-06 02:15:03,322 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:03,323 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:03,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 02:15:03,323 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:03,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:03,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1971233418, now seen corresponding path program 1 times [2025-02-06 02:15:03,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:03,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753137150] [2025-02-06 02:15:03,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:03,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:03,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 299 statements into 1 equivalence classes. [2025-02-06 02:15:03,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 299 of 299 statements. [2025-02-06 02:15:03,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:03,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:03,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-02-06 02:15:03,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:03,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753137150] [2025-02-06 02:15:03,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753137150] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:15:03,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:15:03,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:15:03,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95924672] [2025-02-06 02:15:03,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:15:03,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:15:03,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:03,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:15:03,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:15:03,494 INFO L87 Difference]: Start difference. First operand 318 states and 502 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-02-06 02:15:03,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:03,596 INFO L93 Difference]: Finished difference Result 652 states and 1028 transitions. [2025-02-06 02:15:03,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:15:03,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 299 [2025-02-06 02:15:03,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:03,600 INFO L225 Difference]: With dead ends: 652 [2025-02-06 02:15:03,600 INFO L226 Difference]: Without dead ends: 422 [2025-02-06 02:15:03,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:15:03,601 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 248 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:03,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 488 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:15:03,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2025-02-06 02:15:03,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 318. [2025-02-06 02:15:03,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 227 states have (on average 1.3920704845814977) internal successors, (316), 227 states have internal predecessors, (316), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2025-02-06 02:15:03,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 492 transitions. [2025-02-06 02:15:03,638 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 492 transitions. Word has length 299 [2025-02-06 02:15:03,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:03,639 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 492 transitions. [2025-02-06 02:15:03,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-02-06 02:15:03,639 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 492 transitions. [2025-02-06 02:15:03,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-02-06 02:15:03,642 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:03,642 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:03,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 02:15:03,642 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:03,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:03,643 INFO L85 PathProgramCache]: Analyzing trace with hash 369026821, now seen corresponding path program 1 times [2025-02-06 02:15:03,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:03,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190879637] [2025-02-06 02:15:03,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:03,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:03,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-02-06 02:15:03,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-02-06 02:15:03,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:03,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:03,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-02-06 02:15:03,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:03,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190879637] [2025-02-06 02:15:03,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190879637] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:15:03,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:15:03,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:15:03,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481348097] [2025-02-06 02:15:03,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:15:03,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:15:03,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:03,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:15:03,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:15:03,888 INFO L87 Difference]: Start difference. First operand 318 states and 492 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-02-06 02:15:03,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:03,965 INFO L93 Difference]: Finished difference Result 779 states and 1205 transitions. [2025-02-06 02:15:03,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:15:03,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 300 [2025-02-06 02:15:03,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:03,970 INFO L225 Difference]: With dead ends: 779 [2025-02-06 02:15:03,970 INFO L226 Difference]: Without dead ends: 549 [2025-02-06 02:15:03,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:15:03,971 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 187 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:03,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 523 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:15:03,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2025-02-06 02:15:04,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 545. [2025-02-06 02:15:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 409 states have (on average 1.41320293398533) internal successors, (578), 409 states have internal predecessors, (578), 132 states have call successors, (132), 3 states have call predecessors, (132), 3 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2025-02-06 02:15:04,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 842 transitions. [2025-02-06 02:15:04,008 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 842 transitions. Word has length 300 [2025-02-06 02:15:04,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:04,010 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 842 transitions. [2025-02-06 02:15:04,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-02-06 02:15:04,010 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 842 transitions. [2025-02-06 02:15:04,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-02-06 02:15:04,013 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:04,013 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:04,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 02:15:04,015 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:04,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:04,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1394518820, now seen corresponding path program 1 times [2025-02-06 02:15:04,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:04,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307460507] [2025-02-06 02:15:04,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:04,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:04,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-02-06 02:15:04,242 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-02-06 02:15:04,242 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:04,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-02-06 02:15:04,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:04,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307460507] [2025-02-06 02:15:04,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307460507] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:15:04,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:15:04,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 02:15:04,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831539362] [2025-02-06 02:15:04,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:15:04,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 02:15:04,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:04,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 02:15:04,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:15:04,992 INFO L87 Difference]: Start difference. First operand 545 states and 842 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2025-02-06 02:15:05,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:05,278 INFO L93 Difference]: Finished difference Result 1457 states and 2252 transitions. [2025-02-06 02:15:05,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:15:05,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 300 [2025-02-06 02:15:05,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:05,284 INFO L225 Difference]: With dead ends: 1457 [2025-02-06 02:15:05,284 INFO L226 Difference]: Without dead ends: 1001 [2025-02-06 02:15:05,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-06 02:15:05,285 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 228 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:05,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 946 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 02:15:05,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2025-02-06 02:15:05,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 997. [2025-02-06 02:15:05,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 771 states have (on average 1.4215304798962387) internal successors, (1096), 771 states have internal predecessors, (1096), 220 states have call successors, (220), 5 states have call predecessors, (220), 5 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2025-02-06 02:15:05,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1536 transitions. [2025-02-06 02:15:05,367 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1536 transitions. Word has length 300 [2025-02-06 02:15:05,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:05,368 INFO L471 AbstractCegarLoop]: Abstraction has 997 states and 1536 transitions. [2025-02-06 02:15:05,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2025-02-06 02:15:05,368 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1536 transitions. [2025-02-06 02:15:05,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-02-06 02:15:05,372 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:05,372 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:05,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 02:15:05,372 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:05,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:05,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1425538627, now seen corresponding path program 1 times [2025-02-06 02:15:05,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:05,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796786852] [2025-02-06 02:15:05,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:05,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:05,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-02-06 02:15:05,697 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-02-06 02:15:05,697 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:05,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:05,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 39 proven. 90 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-02-06 02:15:05,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:05,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796786852] [2025-02-06 02:15:05,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796786852] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:15:05,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488990269] [2025-02-06 02:15:05,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:05,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:15:05,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:15:05,972 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 02:15:05,973 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 02:15:06,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-02-06 02:15:06,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-02-06 02:15:06,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:06,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:06,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 02:15:06,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:15:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1629 proven. 90 refuted. 0 times theorem prover too weak. 2065 trivial. 0 not checked. [2025-02-06 02:15:06,831 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:15:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 39 proven. 90 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-02-06 02:15:07,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488990269] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:15:07,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:15:07,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 16 [2025-02-06 02:15:07,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357296464] [2025-02-06 02:15:07,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:15:07,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 02:15:07,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:07,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 02:15:07,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2025-02-06 02:15:07,159 INFO L87 Difference]: Start difference. First operand 997 states and 1536 transitions. Second operand has 16 states, 15 states have (on average 11.2) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 6 states have call successors, (132) [2025-02-06 02:15:08,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:08,132 INFO L93 Difference]: Finished difference Result 2845 states and 4346 transitions. [2025-02-06 02:15:08,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 02:15:08,133 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 11.2) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 6 states have call successors, (132) Word has length 300 [2025-02-06 02:15:08,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:08,141 INFO L225 Difference]: With dead ends: 2845 [2025-02-06 02:15:08,141 INFO L226 Difference]: Without dead ends: 1937 [2025-02-06 02:15:08,143 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2025-02-06 02:15:08,143 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 885 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:08,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 2106 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-06 02:15:08,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2025-02-06 02:15:08,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1013. [2025-02-06 02:15:08,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 786 states have (on average 1.4236641221374047) internal successors, (1119), 786 states have internal predecessors, (1119), 220 states have call successors, (220), 6 states have call predecessors, (220), 6 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2025-02-06 02:15:08,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1559 transitions. [2025-02-06 02:15:08,205 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1559 transitions. Word has length 300 [2025-02-06 02:15:08,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:08,205 INFO L471 AbstractCegarLoop]: Abstraction has 1013 states and 1559 transitions. [2025-02-06 02:15:08,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 11.2) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 6 states have call successors, (132) [2025-02-06 02:15:08,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1559 transitions. [2025-02-06 02:15:08,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-02-06 02:15:08,208 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:08,209 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:08,216 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 02:15:08,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:15:08,410 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:08,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:08,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1407848670, now seen corresponding path program 1 times [2025-02-06 02:15:08,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:08,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612321886] [2025-02-06 02:15:08,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:08,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:08,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-02-06 02:15:08,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-02-06 02:15:08,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:08,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:09,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 51 proven. 78 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-02-06 02:15:09,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:09,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612321886] [2025-02-06 02:15:09,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612321886] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:15:09,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169998110] [2025-02-06 02:15:09,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:09,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:15:09,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:15:09,347 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 02:15:09,349 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 02:15:09,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-02-06 02:15:09,539 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-02-06 02:15:09,539 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:09,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:09,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-06 02:15:09,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:15:10,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2056 proven. 174 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2025-02-06 02:15:10,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:15:11,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 306 proven. 192 refuted. 0 times theorem prover too weak. 3286 trivial. 0 not checked. [2025-02-06 02:15:11,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169998110] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:15:11,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:15:11,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17, 17] total 38 [2025-02-06 02:15:11,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796642065] [2025-02-06 02:15:11,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:15:11,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-02-06 02:15:11,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:11,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-02-06 02:15:11,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1179, Unknown=0, NotChecked=0, Total=1406 [2025-02-06 02:15:11,506 INFO L87 Difference]: Start difference. First operand 1013 states and 1559 transitions. Second operand has 38 states, 35 states have (on average 5.885714285714286) internal successors, (206), 34 states have internal predecessors, (206), 13 states have call successors, (118), 5 states have call predecessors, (118), 11 states have return successors, (119), 12 states have call predecessors, (119), 13 states have call successors, (119) [2025-02-06 02:15:18,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:18,843 INFO L93 Difference]: Finished difference Result 6125 states and 8981 transitions. [2025-02-06 02:15:18,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2025-02-06 02:15:18,845 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 5.885714285714286) internal successors, (206), 34 states have internal predecessors, (206), 13 states have call successors, (118), 5 states have call predecessors, (118), 11 states have return successors, (119), 12 states have call predecessors, (119), 13 states have call successors, (119) Word has length 300 [2025-02-06 02:15:18,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:18,866 INFO L225 Difference]: With dead ends: 6125 [2025-02-06 02:15:18,867 INFO L226 Difference]: Without dead ends: 5217 [2025-02-06 02:15:18,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 585 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12522 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4921, Invalid=29119, Unknown=0, NotChecked=0, Total=34040 [2025-02-06 02:15:18,876 INFO L435 NwaCegarLoop]: 420 mSDtfsCounter, 5084 mSDsluCounter, 4128 mSDsCounter, 0 mSdLazyCounter, 4992 mSolverCounterSat, 1512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5097 SdHoareTripleChecker+Valid, 4548 SdHoareTripleChecker+Invalid, 6504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1512 IncrementalHoareTripleChecker+Valid, 4992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:18,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5097 Valid, 4548 Invalid, 6504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1512 Valid, 4992 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-02-06 02:15:18,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5217 states. [2025-02-06 02:15:19,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5217 to 2711. [2025-02-06 02:15:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2184 states have (on average 1.3896520146520146) internal successors, (3035), 2188 states have internal predecessors, (3035), 464 states have call successors, (464), 62 states have call predecessors, (464), 62 states have return successors, (464), 460 states have call predecessors, (464), 464 states have call successors, (464) [2025-02-06 02:15:19,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3963 transitions. [2025-02-06 02:15:19,073 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3963 transitions. Word has length 300 [2025-02-06 02:15:19,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:19,074 INFO L471 AbstractCegarLoop]: Abstraction has 2711 states and 3963 transitions. [2025-02-06 02:15:19,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 5.885714285714286) internal successors, (206), 34 states have internal predecessors, (206), 13 states have call successors, (118), 5 states have call predecessors, (118), 11 states have return successors, (119), 12 states have call predecessors, (119), 13 states have call successors, (119) [2025-02-06 02:15:19,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3963 transitions. [2025-02-06 02:15:19,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-02-06 02:15:19,077 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:19,077 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:19,085 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 02:15:19,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:15:19,278 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:19,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:19,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1232975686, now seen corresponding path program 1 times [2025-02-06 02:15:19,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:19,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859030782] [2025-02-06 02:15:19,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:19,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:19,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-02-06 02:15:19,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-02-06 02:15:19,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:19,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:19,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-02-06 02:15:19,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:19,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859030782] [2025-02-06 02:15:19,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859030782] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:15:19,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:15:19,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:15:19,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560214775] [2025-02-06 02:15:19,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:15:19,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:15:19,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:19,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:15:19,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:15:19,430 INFO L87 Difference]: Start difference. First operand 2711 states and 3963 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-02-06 02:15:19,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:19,581 INFO L93 Difference]: Finished difference Result 5411 states and 7934 transitions. [2025-02-06 02:15:19,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:15:19,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 300 [2025-02-06 02:15:19,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:19,596 INFO L225 Difference]: With dead ends: 5411 [2025-02-06 02:15:19,596 INFO L226 Difference]: Without dead ends: 3139 [2025-02-06 02:15:19,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:15:19,603 INFO L435 NwaCegarLoop]: 273 mSDtfsCounter, 58 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:19,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 525 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:15:19,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2025-02-06 02:15:19,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 2711. [2025-02-06 02:15:19,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2184 states have (on average 1.3823260073260073) internal successors, (3019), 2188 states have internal predecessors, (3019), 464 states have call successors, (464), 62 states have call predecessors, (464), 62 states have return successors, (464), 460 states have call predecessors, (464), 464 states have call successors, (464) [2025-02-06 02:15:19,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3947 transitions. [2025-02-06 02:15:19,765 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3947 transitions. Word has length 300 [2025-02-06 02:15:19,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:19,766 INFO L471 AbstractCegarLoop]: Abstraction has 2711 states and 3947 transitions. [2025-02-06 02:15:19,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-02-06 02:15:19,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3947 transitions. [2025-02-06 02:15:19,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2025-02-06 02:15:19,768 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:19,768 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:19,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 02:15:19,769 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:19,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:19,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1985785321, now seen corresponding path program 1 times [2025-02-06 02:15:19,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:19,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108584437] [2025-02-06 02:15:19,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:19,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:19,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 301 statements into 1 equivalence classes. [2025-02-06 02:15:19,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 301 of 301 statements. [2025-02-06 02:15:19,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:19,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-02-06 02:15:20,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:20,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108584437] [2025-02-06 02:15:20,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108584437] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:15:20,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:15:20,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:15:20,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307676581] [2025-02-06 02:15:20,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:15:20,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:15:20,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:20,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:15:20,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:15:20,186 INFO L87 Difference]: Start difference. First operand 2711 states and 3947 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-02-06 02:15:20,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:20,407 INFO L93 Difference]: Finished difference Result 4963 states and 7210 transitions. [2025-02-06 02:15:20,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:15:20,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 301 [2025-02-06 02:15:20,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:20,420 INFO L225 Difference]: With dead ends: 4963 [2025-02-06 02:15:20,421 INFO L226 Difference]: Without dead ends: 2783 [2025-02-06 02:15:20,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:15:20,426 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 3 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:20,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 740 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:15:20,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2025-02-06 02:15:20,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2735. [2025-02-06 02:15:20,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 2208 states have (on average 1.3781702898550725) internal successors, (3043), 2212 states have internal predecessors, (3043), 464 states have call successors, (464), 62 states have call predecessors, (464), 62 states have return successors, (464), 460 states have call predecessors, (464), 464 states have call successors, (464) [2025-02-06 02:15:20,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 3971 transitions. [2025-02-06 02:15:20,656 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 3971 transitions. Word has length 301 [2025-02-06 02:15:20,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:20,657 INFO L471 AbstractCegarLoop]: Abstraction has 2735 states and 3971 transitions. [2025-02-06 02:15:20,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-02-06 02:15:20,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 3971 transitions. [2025-02-06 02:15:20,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2025-02-06 02:15:20,661 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:20,661 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:20,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 02:15:20,662 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:20,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:20,662 INFO L85 PathProgramCache]: Analyzing trace with hash 512230616, now seen corresponding path program 1 times [2025-02-06 02:15:20,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:20,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329660246] [2025-02-06 02:15:20,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:20,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:20,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 301 statements into 1 equivalence classes. [2025-02-06 02:15:20,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 301 of 301 statements. [2025-02-06 02:15:20,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:20,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-02-06 02:15:21,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:21,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329660246] [2025-02-06 02:15:21,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329660246] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:15:21,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:15:21,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 02:15:21,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251349797] [2025-02-06 02:15:21,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:15:21,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 02:15:21,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:21,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 02:15:21,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:15:21,124 INFO L87 Difference]: Start difference. First operand 2735 states and 3971 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-02-06 02:15:21,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:21,490 INFO L93 Difference]: Finished difference Result 6233 states and 9038 transitions. [2025-02-06 02:15:21,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 02:15:21,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 301 [2025-02-06 02:15:21,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:21,504 INFO L225 Difference]: With dead ends: 6233 [2025-02-06 02:15:21,505 INFO L226 Difference]: Without dead ends: 3881 [2025-02-06 02:15:21,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 02:15:21,511 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 93 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:21,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1050 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 02:15:21,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3881 states. [2025-02-06 02:15:21,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3881 to 3739. [2025-02-06 02:15:21,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3739 states, 3139 states have (on average 1.3787830519273654) internal successors, (4328), 3155 states have internal predecessors, (4328), 524 states have call successors, (524), 75 states have call predecessors, (524), 75 states have return successors, (524), 508 states have call predecessors, (524), 524 states have call successors, (524) [2025-02-06 02:15:21,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3739 states to 3739 states and 5376 transitions. [2025-02-06 02:15:21,709 INFO L78 Accepts]: Start accepts. Automaton has 3739 states and 5376 transitions. Word has length 301 [2025-02-06 02:15:21,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:21,710 INFO L471 AbstractCegarLoop]: Abstraction has 3739 states and 5376 transitions. [2025-02-06 02:15:21,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-02-06 02:15:21,714 INFO L276 IsEmpty]: Start isEmpty. Operand 3739 states and 5376 transitions. [2025-02-06 02:15:21,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-02-06 02:15:21,719 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:21,719 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:21,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 02:15:21,720 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:21,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:21,720 INFO L85 PathProgramCache]: Analyzing trace with hash -487503666, now seen corresponding path program 1 times [2025-02-06 02:15:21,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:21,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623543332] [2025-02-06 02:15:21,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:21,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:21,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-02-06 02:15:21,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-02-06 02:15:21,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:21,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-02-06 02:15:22,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:22,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623543332] [2025-02-06 02:15:22,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623543332] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:15:22,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:15:22,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 02:15:22,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917158756] [2025-02-06 02:15:22,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:15:22,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 02:15:22,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:22,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 02:15:22,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 02:15:22,302 INFO L87 Difference]: Start difference. First operand 3739 states and 5376 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2025-02-06 02:15:22,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:22,823 INFO L93 Difference]: Finished difference Result 7421 states and 10719 transitions. [2025-02-06 02:15:22,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 02:15:22,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 302 [2025-02-06 02:15:22,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:22,846 INFO L225 Difference]: With dead ends: 7421 [2025-02-06 02:15:22,846 INFO L226 Difference]: Without dead ends: 4897 [2025-02-06 02:15:22,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-02-06 02:15:22,852 INFO L435 NwaCegarLoop]: 332 mSDtfsCounter, 526 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:22,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 1340 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 02:15:22,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4897 states. [2025-02-06 02:15:23,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4897 to 3739. [2025-02-06 02:15:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3739 states, 3139 states have (on average 1.3781459063395987) internal successors, (4326), 3155 states have internal predecessors, (4326), 524 states have call successors, (524), 75 states have call predecessors, (524), 75 states have return successors, (524), 508 states have call predecessors, (524), 524 states have call successors, (524) [2025-02-06 02:15:23,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3739 states to 3739 states and 5374 transitions. [2025-02-06 02:15:23,152 INFO L78 Accepts]: Start accepts. Automaton has 3739 states and 5374 transitions. Word has length 302 [2025-02-06 02:15:23,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:23,153 INFO L471 AbstractCegarLoop]: Abstraction has 3739 states and 5374 transitions. [2025-02-06 02:15:23,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2025-02-06 02:15:23,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3739 states and 5374 transitions. [2025-02-06 02:15:23,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-02-06 02:15:23,158 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:23,158 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:23,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 02:15:23,159 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:23,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:23,159 INFO L85 PathProgramCache]: Analyzing trace with hash 2106723151, now seen corresponding path program 1 times [2025-02-06 02:15:23,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:23,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012945708] [2025-02-06 02:15:23,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:23,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:23,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-02-06 02:15:23,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-02-06 02:15:23,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:23,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:24,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-02-06 02:15:24,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:24,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012945708] [2025-02-06 02:15:24,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012945708] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:15:24,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:15:24,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 02:15:24,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744090033] [2025-02-06 02:15:24,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:15:24,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 02:15:24,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:24,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 02:15:24,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 02:15:24,194 INFO L87 Difference]: Start difference. First operand 3739 states and 5374 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2025-02-06 02:15:25,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:25,590 INFO L93 Difference]: Finished difference Result 8297 states and 11989 transitions. [2025-02-06 02:15:25,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 02:15:25,591 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 302 [2025-02-06 02:15:25,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:25,608 INFO L225 Difference]: With dead ends: 8297 [2025-02-06 02:15:25,608 INFO L226 Difference]: Without dead ends: 5781 [2025-02-06 02:15:25,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2025-02-06 02:15:25,614 INFO L435 NwaCegarLoop]: 331 mSDtfsCounter, 1184 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:25,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 1789 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-06 02:15:25,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5781 states. [2025-02-06 02:15:25,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5781 to 4145. [2025-02-06 02:15:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 3542 states have (on average 1.3893280632411067) internal successors, (4921), 3558 states have internal predecessors, (4921), 524 states have call successors, (524), 78 states have call predecessors, (524), 78 states have return successors, (524), 508 states have call predecessors, (524), 524 states have call successors, (524) [2025-02-06 02:15:25,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 5969 transitions. [2025-02-06 02:15:25,862 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 5969 transitions. Word has length 302 [2025-02-06 02:15:25,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:25,863 INFO L471 AbstractCegarLoop]: Abstraction has 4145 states and 5969 transitions. [2025-02-06 02:15:25,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2025-02-06 02:15:25,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 5969 transitions. [2025-02-06 02:15:25,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-02-06 02:15:25,867 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:25,868 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:25,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 02:15:25,868 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:25,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:25,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1658026512, now seen corresponding path program 1 times [2025-02-06 02:15:25,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:25,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104674326] [2025-02-06 02:15:25,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:25,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:25,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-02-06 02:15:25,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-02-06 02:15:25,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:25,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-02-06 02:15:26,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:26,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104674326] [2025-02-06 02:15:26,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104674326] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:15:26,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:15:26,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 02:15:26,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719946452] [2025-02-06 02:15:26,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:15:26,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 02:15:26,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:26,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 02:15:26,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 02:15:26,857 INFO L87 Difference]: Start difference. First operand 4145 states and 5969 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2025-02-06 02:15:27,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:27,484 INFO L93 Difference]: Finished difference Result 7531 states and 10900 transitions. [2025-02-06 02:15:27,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 02:15:27,488 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 302 [2025-02-06 02:15:27,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:27,503 INFO L225 Difference]: With dead ends: 7531 [2025-02-06 02:15:27,503 INFO L226 Difference]: Without dead ends: 5015 [2025-02-06 02:15:27,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-02-06 02:15:27,508 INFO L435 NwaCegarLoop]: 363 mSDtfsCounter, 532 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:27,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1368 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 02:15:27,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5015 states. [2025-02-06 02:15:27,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5015 to 4141. [2025-02-06 02:15:27,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4141 states, 3538 states have (on average 1.3892029395138497) internal successors, (4915), 3554 states have internal predecessors, (4915), 524 states have call successors, (524), 78 states have call predecessors, (524), 78 states have return successors, (524), 508 states have call predecessors, (524), 524 states have call successors, (524) [2025-02-06 02:15:27,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4141 states to 4141 states and 5963 transitions. [2025-02-06 02:15:27,710 INFO L78 Accepts]: Start accepts. Automaton has 4141 states and 5963 transitions. Word has length 302 [2025-02-06 02:15:27,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:27,711 INFO L471 AbstractCegarLoop]: Abstraction has 4141 states and 5963 transitions. [2025-02-06 02:15:27,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2025-02-06 02:15:27,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4141 states and 5963 transitions. [2025-02-06 02:15:27,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-02-06 02:15:27,714 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:27,714 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:27,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 02:15:27,714 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:27,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:27,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1009912967, now seen corresponding path program 1 times [2025-02-06 02:15:27,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:27,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853827477] [2025-02-06 02:15:27,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:27,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:27,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-02-06 02:15:27,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-02-06 02:15:27,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:27,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 99 proven. 30 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-02-06 02:15:28,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:28,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853827477] [2025-02-06 02:15:28,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853827477] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:15:28,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401428889] [2025-02-06 02:15:28,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:28,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:15:28,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:15:28,309 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 02:15:28,311 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 02:15:28,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-02-06 02:15:28,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-02-06 02:15:28,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:28,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:28,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 02:15:28,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:15:28,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1429 proven. 30 refuted. 0 times theorem prover too weak. 2325 trivial. 0 not checked. [2025-02-06 02:15:28,661 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:15:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 99 proven. 30 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-02-06 02:15:28,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401428889] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:15:28,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:15:28,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-02-06 02:15:28,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209093119] [2025-02-06 02:15:28,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:15:28,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 02:15:28,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:28,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 02:15:28,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-06 02:15:28,868 INFO L87 Difference]: Start difference. First operand 4141 states and 5963 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2025-02-06 02:15:29,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:29,636 INFO L93 Difference]: Finished difference Result 10122 states and 14453 transitions. [2025-02-06 02:15:29,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 02:15:29,637 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 302 [2025-02-06 02:15:29,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:29,653 INFO L225 Difference]: With dead ends: 10122 [2025-02-06 02:15:29,653 INFO L226 Difference]: Without dead ends: 6303 [2025-02-06 02:15:29,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 602 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2025-02-06 02:15:29,660 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 1166 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:29,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 735 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 02:15:29,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2025-02-06 02:15:29,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 3155. [2025-02-06 02:15:29,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3155 states, 2543 states have (on average 1.3389697208022022) internal successors, (3405), 2559 states have internal predecessors, (3405), 524 states have call successors, (524), 87 states have call predecessors, (524), 87 states have return successors, (524), 508 states have call predecessors, (524), 524 states have call successors, (524) [2025-02-06 02:15:29,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3155 states to 3155 states and 4453 transitions. [2025-02-06 02:15:29,924 INFO L78 Accepts]: Start accepts. Automaton has 3155 states and 4453 transitions. Word has length 302 [2025-02-06 02:15:29,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:29,924 INFO L471 AbstractCegarLoop]: Abstraction has 3155 states and 4453 transitions. [2025-02-06 02:15:29,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2025-02-06 02:15:29,925 INFO L276 IsEmpty]: Start isEmpty. Operand 3155 states and 4453 transitions. [2025-02-06 02:15:29,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-02-06 02:15:29,927 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:29,927 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:29,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 02:15:30,127 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,SelfDestructingSolverStorable14 [2025-02-06 02:15:30,127 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:30,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:30,128 INFO L85 PathProgramCache]: Analyzing trace with hash 499941334, now seen corresponding path program 1 times [2025-02-06 02:15:30,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:30,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056428278] [2025-02-06 02:15:30,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:30,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:30,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-02-06 02:15:30,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-02-06 02:15:30,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:30,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 90 proven. 39 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-02-06 02:15:30,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:30,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056428278] [2025-02-06 02:15:30,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056428278] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:15:30,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902847740] [2025-02-06 02:15:30,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:30,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:15:30,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:15:30,832 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:15:30,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 02:15:30,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-02-06 02:15:31,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-02-06 02:15:31,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:31,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:31,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-06 02:15:31,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:15:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2508 proven. 183 refuted. 0 times theorem prover too weak. 1093 trivial. 0 not checked. [2025-02-06 02:15:32,252 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:15:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 186 proven. 192 refuted. 0 times theorem prover too weak. 3406 trivial. 0 not checked. [2025-02-06 02:15:32,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902847740] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:15:32,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:15:32,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 15] total 36 [2025-02-06 02:15:32,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289608883] [2025-02-06 02:15:32,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:15:32,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-06 02:15:32,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:32,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-06 02:15:32,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1003, Unknown=0, NotChecked=0, Total=1260 [2025-02-06 02:15:32,856 INFO L87 Difference]: Start difference. First operand 3155 states and 4453 transitions. Second operand has 36 states, 33 states have (on average 5.848484848484849) internal successors, (193), 34 states have internal predecessors, (193), 14 states have call successors, (132), 6 states have call predecessors, (132), 11 states have return successors, (132), 11 states have call predecessors, (132), 14 states have call successors, (132) [2025-02-06 02:15:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:34,358 INFO L93 Difference]: Finished difference Result 6727 states and 9467 transitions. [2025-02-06 02:15:34,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-06 02:15:34,359 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 5.848484848484849) internal successors, (193), 34 states have internal predecessors, (193), 14 states have call successors, (132), 6 states have call predecessors, (132), 11 states have return successors, (132), 11 states have call predecessors, (132), 14 states have call successors, (132) Word has length 302 [2025-02-06 02:15:34,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:34,367 INFO L225 Difference]: With dead ends: 6727 [2025-02-06 02:15:34,368 INFO L226 Difference]: Without dead ends: 3713 [2025-02-06 02:15:34,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=865, Invalid=2557, Unknown=0, NotChecked=0, Total=3422 [2025-02-06 02:15:34,372 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 1430 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:34,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 1653 Invalid, 2100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-06 02:15:34,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2025-02-06 02:15:34,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3163. [2025-02-06 02:15:34,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3163 states, 2549 states have (on average 1.3366025892506865) internal successors, (3407), 2565 states have internal predecessors, (3407), 524 states have call successors, (524), 89 states have call predecessors, (524), 89 states have return successors, (524), 508 states have call predecessors, (524), 524 states have call successors, (524) [2025-02-06 02:15:34,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 4455 transitions. [2025-02-06 02:15:34,647 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 4455 transitions. Word has length 302 [2025-02-06 02:15:34,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:34,647 INFO L471 AbstractCegarLoop]: Abstraction has 3163 states and 4455 transitions. [2025-02-06 02:15:34,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 5.848484848484849) internal successors, (193), 34 states have internal predecessors, (193), 14 states have call successors, (132), 6 states have call predecessors, (132), 11 states have return successors, (132), 11 states have call predecessors, (132), 14 states have call successors, (132) [2025-02-06 02:15:34,648 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 4455 transitions. [2025-02-06 02:15:34,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-02-06 02:15:34,650 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:34,650 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:34,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 02:15:34,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-06 02:15:34,851 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:34,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:34,851 INFO L85 PathProgramCache]: Analyzing trace with hash -524752587, now seen corresponding path program 1 times [2025-02-06 02:15:34,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:34,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421671460] [2025-02-06 02:15:34,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:34,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:34,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-02-06 02:15:35,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-02-06 02:15:35,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:35,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:35,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 81 proven. 171 refuted. 0 times theorem prover too weak. 3532 trivial. 0 not checked. [2025-02-06 02:15:35,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:35,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421671460] [2025-02-06 02:15:35,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421671460] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:15:35,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529184411] [2025-02-06 02:15:35,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:35,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:15:35,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:15:35,621 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:15:35,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 02:15:35,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-02-06 02:15:35,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-02-06 02:15:35,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:35,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:35,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 02:15:35,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:15:36,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1695 proven. 252 refuted. 0 times theorem prover too weak. 1837 trivial. 0 not checked. [2025-02-06 02:15:36,965 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:15:37,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529184411] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:15:37,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 02:15:37,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 23 [2025-02-06 02:15:37,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736478879] [2025-02-06 02:15:37,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 02:15:37,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 02:15:37,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:37,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 02:15:37,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=910, Unknown=0, NotChecked=0, Total=1122 [2025-02-06 02:15:37,834 INFO L87 Difference]: Start difference. First operand 3163 states and 4455 transitions. Second operand has 23 states, 22 states have (on average 7.409090909090909) internal successors, (163), 22 states have internal predecessors, (163), 7 states have call successors, (88), 5 states have call predecessors, (88), 7 states have return successors, (88), 6 states have call predecessors, (88), 7 states have call successors, (88) [2025-02-06 02:15:39,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:39,433 INFO L93 Difference]: Finished difference Result 10079 states and 14023 transitions. [2025-02-06 02:15:39,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-06 02:15:39,434 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 7.409090909090909) internal successors, (163), 22 states have internal predecessors, (163), 7 states have call successors, (88), 5 states have call predecessors, (88), 7 states have return successors, (88), 6 states have call predecessors, (88), 7 states have call successors, (88) Word has length 302 [2025-02-06 02:15:39,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:39,452 INFO L225 Difference]: With dead ends: 10079 [2025-02-06 02:15:39,453 INFO L226 Difference]: Without dead ends: 7521 [2025-02-06 02:15:39,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=662, Invalid=2200, Unknown=0, NotChecked=0, Total=2862 [2025-02-06 02:15:39,459 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 766 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:39,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 2487 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-06 02:15:39,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7521 states. [2025-02-06 02:15:39,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7521 to 6699. [2025-02-06 02:15:40,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 5356 states have (on average 1.315160567587752) internal successors, (7044), 5404 states have internal predecessors, (7044), 1148 states have call successors, (1148), 194 states have call predecessors, (1148), 194 states have return successors, (1148), 1100 states have call predecessors, (1148), 1148 states have call successors, (1148) [2025-02-06 02:15:40,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9340 transitions. [2025-02-06 02:15:40,024 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9340 transitions. Word has length 302 [2025-02-06 02:15:40,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:40,025 INFO L471 AbstractCegarLoop]: Abstraction has 6699 states and 9340 transitions. [2025-02-06 02:15:40,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 7.409090909090909) internal successors, (163), 22 states have internal predecessors, (163), 7 states have call successors, (88), 5 states have call predecessors, (88), 7 states have return successors, (88), 6 states have call predecessors, (88), 7 states have call successors, (88) [2025-02-06 02:15:40,026 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9340 transitions. [2025-02-06 02:15:40,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-02-06 02:15:40,028 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:40,029 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:40,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 02:15:40,229 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,SelfDestructingSolverStorable16 [2025-02-06 02:15:40,230 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:40,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:40,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1973263350, now seen corresponding path program 1 times [2025-02-06 02:15:40,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:40,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099849632] [2025-02-06 02:15:40,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:40,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:40,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-02-06 02:15:40,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-02-06 02:15:40,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:40,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:43,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 225 proven. 255 refuted. 0 times theorem prover too weak. 3304 trivial. 0 not checked. [2025-02-06 02:15:43,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:43,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099849632] [2025-02-06 02:15:43,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099849632] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:15:43,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909133779] [2025-02-06 02:15:43,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:43,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:15:43,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:15:43,420 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:15:43,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 02:15:43,544 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-02-06 02:15:43,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-02-06 02:15:43,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:43,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:43,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 84 conjuncts are in the unsatisfiable core [2025-02-06 02:15:43,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:15:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2180 proven. 507 refuted. 0 times theorem prover too weak. 1097 trivial. 0 not checked. [2025-02-06 02:15:47,493 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:15:50,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909133779] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:15:50,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 02:15:50,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 38] total 56 [2025-02-06 02:15:50,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690467149] [2025-02-06 02:15:50,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 02:15:50,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-02-06 02:15:50,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:50,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-02-06 02:15:50,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=585, Invalid=3837, Unknown=0, NotChecked=0, Total=4422 [2025-02-06 02:15:50,201 INFO L87 Difference]: Start difference. First operand 6699 states and 9340 transitions. Second operand has 56 states, 52 states have (on average 3.7115384615384617) internal successors, (193), 50 states have internal predecessors, (193), 20 states have call successors, (88), 11 states have call predecessors, (88), 15 states have return successors, (88), 16 states have call predecessors, (88), 20 states have call successors, (88) [2025-02-06 02:15:55,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:55,842 INFO L93 Difference]: Finished difference Result 13647 states and 18924 transitions. [2025-02-06 02:15:55,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2025-02-06 02:15:55,842 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 52 states have (on average 3.7115384615384617) internal successors, (193), 50 states have internal predecessors, (193), 20 states have call successors, (88), 11 states have call predecessors, (88), 15 states have return successors, (88), 16 states have call predecessors, (88), 20 states have call successors, (88) Word has length 302 [2025-02-06 02:15:55,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:55,861 INFO L225 Difference]: With dead ends: 13647 [2025-02-06 02:15:55,861 INFO L226 Difference]: Without dead ends: 7481 [2025-02-06 02:15:55,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3992 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2488, Invalid=13514, Unknown=0, NotChecked=0, Total=16002 [2025-02-06 02:15:55,873 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 2974 mSDsluCounter, 3762 mSDsCounter, 0 mSdLazyCounter, 4600 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2974 SdHoareTripleChecker+Valid, 3930 SdHoareTripleChecker+Invalid, 5096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 4600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-02-06 02:15:55,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2974 Valid, 3930 Invalid, 5096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 4600 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-02-06 02:15:55,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7481 states. [2025-02-06 02:15:56,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7481 to 6647. [2025-02-06 02:15:56,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6647 states, 5301 states have (on average 1.309375589511413) internal successors, (6941), 5349 states have internal predecessors, (6941), 1148 states have call successors, (1148), 197 states have call predecessors, (1148), 197 states have return successors, (1148), 1100 states have call predecessors, (1148), 1148 states have call successors, (1148) [2025-02-06 02:15:56,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6647 states to 6647 states and 9237 transitions. [2025-02-06 02:15:56,514 INFO L78 Accepts]: Start accepts. Automaton has 6647 states and 9237 transitions. Word has length 302 [2025-02-06 02:15:56,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:56,515 INFO L471 AbstractCegarLoop]: Abstraction has 6647 states and 9237 transitions. [2025-02-06 02:15:56,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 52 states have (on average 3.7115384615384617) internal successors, (193), 50 states have internal predecessors, (193), 20 states have call successors, (88), 11 states have call predecessors, (88), 15 states have return successors, (88), 16 states have call predecessors, (88), 20 states have call successors, (88) [2025-02-06 02:15:56,516 INFO L276 IsEmpty]: Start isEmpty. Operand 6647 states and 9237 transitions. [2025-02-06 02:15:56,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-02-06 02:15:56,518 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:56,518 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:56,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 02:15:56,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:15:56,719 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:56,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:56,720 INFO L85 PathProgramCache]: Analyzing trace with hash 828557110, now seen corresponding path program 1 times [2025-02-06 02:15:56,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:56,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187634024] [2025-02-06 02:15:56,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:56,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:56,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-02-06 02:15:56,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-02-06 02:15:56,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:56,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 02:15:56,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702386498] [2025-02-06 02:15:56,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:56,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:15:56,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:15:56,945 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:15:56,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 02:15:57,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-02-06 02:15:57,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-02-06 02:15:57,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:57,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:57,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-06 02:15:57,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:15:57,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2056 proven. 174 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2025-02-06 02:15:57,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:16:19,344 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (+ c_~var_1_21~0 c_~var_1_52~0) 256))) (and (<= .cse0 127) (forall ((v_z_63 Int)) (or (< v_z_63 (+ .cse0 1)) (< (div 10 v_z_63) 1) (< v_z_63 2))))) is different from false [2025-02-06 02:16:19,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:19,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187634024] [2025-02-06 02:16:19,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 02:16:19,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702386498] [2025-02-06 02:16:19,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702386498] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:16:19,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:16:19,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2025-02-06 02:16:19,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507776424] [2025-02-06 02:16:19,459 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-06 02:16:19,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-06 02:16:19,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:19,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-06 02:16:19,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=737, Unknown=5, NotChecked=56, Total=930 [2025-02-06 02:16:19,460 INFO L87 Difference]: Start difference. First operand 6647 states and 9237 transitions. Second operand has 22 states, 22 states have (on average 4.681818181818182) internal successors, (103), 20 states have internal predecessors, (103), 5 states have call successors, (44), 5 states have call predecessors, (44), 7 states have return successors, (44), 5 states have call predecessors, (44), 5 states have call successors, (44)