./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-44.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-44.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 c4bbaaa17258129f6bb60f5a0d551610bd9b55c16f80d3fd4e62d867a6759bbe --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:17:46,518 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:17:46,579 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:17:46,584 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:17:46,584 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:17:46,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:17:46,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:17:46,618 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:17:46,618 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:17:46,619 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:17:46,619 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:17:46,620 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:17:46,620 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:17:46,621 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:17:46,621 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:17:46,621 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:17:46,622 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:17:46,622 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:17:46,622 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:17:46,623 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:17:46,623 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:17:46,624 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:17:46,624 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:17:46,625 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:17:46,625 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:17:46,625 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:17:46,626 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:17:46,626 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:17:46,626 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:17:46,627 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:17:46,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:17:46,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:17:46,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:17:46,628 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:17:46,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:17:46,629 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:17:46,629 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:17:46,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:17:46,630 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:17:46,630 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:17:46,630 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:17:46,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:17:46,631 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4bbaaa17258129f6bb60f5a0d551610bd9b55c16f80d3fd4e62d867a6759bbe [2024-11-22 13:17:46,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:17:46,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:17:46,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:17:46,951 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:17:46,952 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:17:46,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-44.i [2024-11-22 13:17:48,401 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:17:48,618 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:17:48,619 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-44.i [2024-11-22 13:17:48,635 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396f361ee/040029049b9a496d9ccca312cd2b2dd8/FLAG08c409d26 [2024-11-22 13:17:48,978 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396f361ee/040029049b9a496d9ccca312cd2b2dd8 [2024-11-22 13:17:48,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:17:48,982 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:17:48,985 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:17:48,985 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:17:48,991 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:17:48,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:17:48" (1/1) ... [2024-11-22 13:17:48,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ecd3b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:17:48, skipping insertion in model container [2024-11-22 13:17:48,992 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:17:48" (1/1) ... [2024-11-22 13:17:49,019 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:17:49,182 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-44.i[917,930] [2024-11-22 13:17:49,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:17:49,262 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:17:49,273 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-44.i[917,930] [2024-11-22 13:17:49,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:17:49,345 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:17:49,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:17:49 WrapperNode [2024-11-22 13:17:49,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:17:49,347 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:17:49,347 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:17:49,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:17:49,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:17:49" (1/1) ... [2024-11-22 13:17:49,375 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:17:49" (1/1) ... [2024-11-22 13:17:49,416 INFO L138 Inliner]: procedures = 30, calls = 164, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 500 [2024-11-22 13:17:49,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:17:49,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:17:49,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:17:49,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:17:49,427 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:17:49" (1/1) ... [2024-11-22 13:17:49,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:17:49" (1/1) ... [2024-11-22 13:17:49,433 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:17:49" (1/1) ... [2024-11-22 13:17:49,440 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-11-22 13:17:49,440 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:17:49" (1/1) ... [2024-11-22 13:17:49,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:17:49" (1/1) ... [2024-11-22 13:17:49,455 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:17:49" (1/1) ... [2024-11-22 13:17:49,460 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:17:49" (1/1) ... [2024-11-22 13:17:49,467 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:17:49" (1/1) ... [2024-11-22 13:17:49,469 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:17:49" (1/1) ... [2024-11-22 13:17:49,479 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:17:49,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:17:49,482 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:17:49,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:17:49,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:17:49" (1/1) ... [2024-11-22 13:17:49,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:17:49,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:17:49,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 13:17:49,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 13:17:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:17:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-11-22 13:17:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-22 13:17:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-22 13:17:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-22 13:17:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-22 13:17:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-22 13:17:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 13:17:49,585 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 13:17:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-22 13:17:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:17:49,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:17:49,731 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:17:49,734 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:17:50,424 INFO L? ?]: Removed 120 outVars from TransFormulas that were not future-live. [2024-11-22 13:17:50,425 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:17:50,445 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:17:50,445 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 13:17:50,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:17:50 BoogieIcfgContainer [2024-11-22 13:17:50,446 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:17:50,450 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:17:50,451 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:17:50,455 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:17:50,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:17:48" (1/3) ... [2024-11-22 13:17:50,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be893ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:17:50, skipping insertion in model container [2024-11-22 13:17:50,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:17:49" (2/3) ... [2024-11-22 13:17:50,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be893ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:17:50, skipping insertion in model container [2024-11-22 13:17:50,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:17:50" (3/3) ... [2024-11-22 13:17:50,459 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-44.i [2024-11-22 13:17:50,476 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:17:50,476 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:17:50,551 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:17:50,558 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;@18241e40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:17:50,558 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 13:17:50,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 94 states have (on average 1.3829787234042554) internal successors, (130), 95 states have internal predecessors, (130), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 13:17:50,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-22 13:17:50,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:17:50,585 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:17:50,585 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:17:50,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:17:50,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1924656963, now seen corresponding path program 1 times [2024-11-22 13:17:50,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:17:50,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701924954] [2024-11-22 13:17:50,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:17:50,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:17:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:17:51,128 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-22 13:17:51,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:17:51,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701924954] [2024-11-22 13:17:51,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701924954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:17:51,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240623569] [2024-11-22 13:17:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:17:51,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:17:51,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:17:51,138 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:17:51,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:17:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:17:51,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 13:17:51,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:17:51,490 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-22 13:17:51,491 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:17:51,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240623569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:17:51,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:17:51,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 13:17:51,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541033522] [2024-11-22 13:17:51,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:17:51,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 13:17:51,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:17:51,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 13:17:51,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 13:17:51,528 INFO L87 Difference]: Start difference. First operand has 118 states, 94 states have (on average 1.3829787234042554) internal successors, (130), 95 states have internal predecessors, (130), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-22 13:17:51,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:17:51,567 INFO L93 Difference]: Finished difference Result 229 states and 359 transitions. [2024-11-22 13:17:51,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 13:17:51,570 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) Word has length 159 [2024-11-22 13:17:51,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:17:51,577 INFO L225 Difference]: With dead ends: 229 [2024-11-22 13:17:51,577 INFO L226 Difference]: Without dead ends: 114 [2024-11-22 13:17:51,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 13:17:51,583 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:17:51,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 13:17:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-22 13:17:51,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-22 13:17:51,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 91 states have (on average 1.3516483516483517) internal successors, (123), 91 states have internal predecessors, (123), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 13:17:51,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 165 transitions. [2024-11-22 13:17:51,638 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 165 transitions. Word has length 159 [2024-11-22 13:17:51,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:17:51,640 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 165 transitions. [2024-11-22 13:17:51,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-22 13:17:51,640 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 165 transitions. [2024-11-22 13:17:51,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-22 13:17:51,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:17:51,646 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:17:51,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:17:51,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 13:17:51,847 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:17:51,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:17:51,848 INFO L85 PathProgramCache]: Analyzing trace with hash -781629009, now seen corresponding path program 1 times [2024-11-22 13:17:51,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:17:51,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540521237] [2024-11-22 13:17:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:17:51,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:17:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:17:52,400 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 13:17:52,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:17:52,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540521237] [2024-11-22 13:17:52,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540521237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:17:52,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:17:52,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:17:52,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946890060] [2024-11-22 13:17:52,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:17:52,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:17:52,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:17:52,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:17:52,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:17:52,408 INFO L87 Difference]: Start difference. First operand 114 states and 165 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-22 13:17:52,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:17:52,462 INFO L93 Difference]: Finished difference Result 227 states and 330 transitions. [2024-11-22 13:17:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:17:52,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 159 [2024-11-22 13:17:52,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:17:52,466 INFO L225 Difference]: With dead ends: 227 [2024-11-22 13:17:52,466 INFO L226 Difference]: Without dead ends: 116 [2024-11-22 13:17:52,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:17:52,471 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 0 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:17:52,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 478 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 13:17:52,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-22 13:17:52,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-11-22 13:17:52,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 93 states have (on average 1.3440860215053763) internal successors, (125), 93 states have internal predecessors, (125), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 13:17:52,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 167 transitions. [2024-11-22 13:17:52,494 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 167 transitions. Word has length 159 [2024-11-22 13:17:52,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:17:52,500 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 167 transitions. [2024-11-22 13:17:52,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-22 13:17:52,503 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 167 transitions. [2024-11-22 13:17:52,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-22 13:17:52,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:17:52,506 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:17:52,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:17:52,506 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:17:52,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:17:52,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1483228883, now seen corresponding path program 1 times [2024-11-22 13:17:52,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:17:52,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158700687] [2024-11-22 13:17:52,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:17:52,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:17:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:17:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 13:17:52,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:17:52,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158700687] [2024-11-22 13:17:52,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158700687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:17:52,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:17:52,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:17:52,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065103712] [2024-11-22 13:17:52,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:17:52,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:17:52,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:17:52,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:17:52,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:17:52,826 INFO L87 Difference]: Start difference. First operand 116 states and 167 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-22 13:17:52,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:17:52,866 INFO L93 Difference]: Finished difference Result 232 states and 335 transitions. [2024-11-22 13:17:52,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:17:52,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 159 [2024-11-22 13:17:52,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:17:52,868 INFO L225 Difference]: With dead ends: 232 [2024-11-22 13:17:52,868 INFO L226 Difference]: Without dead ends: 119 [2024-11-22 13:17:52,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:17:52,870 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 1 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:17:52,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 477 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 13:17:52,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-22 13:17:52,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2024-11-22 13:17:52,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 95 states have (on average 1.3368421052631578) internal successors, (127), 95 states have internal predecessors, (127), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 13:17:52,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 169 transitions. [2024-11-22 13:17:52,889 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 169 transitions. Word has length 159 [2024-11-22 13:17:52,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:17:52,891 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 169 transitions. [2024-11-22 13:17:52,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-22 13:17:52,892 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 169 transitions. [2024-11-22 13:17:52,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-22 13:17:52,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:17:52,898 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:17:52,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:17:52,898 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:17:52,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:17:52,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1481381841, now seen corresponding path program 1 times [2024-11-22 13:17:52,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:17:52,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449622242] [2024-11-22 13:17:52,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:17:52,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:17:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:17:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 13:17:54,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:17:54,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449622242] [2024-11-22 13:17:54,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449622242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:17:54,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:17:54,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:17:54,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977363777] [2024-11-22 13:17:54,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:17:54,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:17:54,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:17:54,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:17:54,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:17:54,027 INFO L87 Difference]: Start difference. First operand 118 states and 169 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-22 13:17:54,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:17:54,508 INFO L93 Difference]: Finished difference Result 287 states and 412 transitions. [2024-11-22 13:17:54,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:17:54,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 159 [2024-11-22 13:17:54,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:17:54,514 INFO L225 Difference]: With dead ends: 287 [2024-11-22 13:17:54,514 INFO L226 Difference]: Without dead ends: 172 [2024-11-22 13:17:54,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:17:54,518 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 282 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 13:17:54,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 489 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 13:17:54,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-22 13:17:54,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 130. [2024-11-22 13:17:54,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 107 states have (on average 1.355140186915888) internal successors, (145), 107 states have internal predecessors, (145), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 13:17:54,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 187 transitions. [2024-11-22 13:17:54,544 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 187 transitions. Word has length 159 [2024-11-22 13:17:54,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:17:54,546 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 187 transitions. [2024-11-22 13:17:54,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-22 13:17:54,546 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 187 transitions. [2024-11-22 13:17:54,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-22 13:17:54,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:17:54,551 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:17:54,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:17:54,551 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:17:54,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:17:54,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1187624250, now seen corresponding path program 1 times [2024-11-22 13:17:54,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:17:54,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50681940] [2024-11-22 13:17:54,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:17:54,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:17:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:17:54,766 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 13:17:54,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:17:54,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50681940] [2024-11-22 13:17:54,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50681940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:17:54,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:17:54,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:17:54,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67237830] [2024-11-22 13:17:54,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:17:54,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:17:54,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:17:54,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:17:54,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:17:54,769 INFO L87 Difference]: Start difference. First operand 130 states and 187 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-22 13:17:55,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:17:55,016 INFO L93 Difference]: Finished difference Result 259 states and 373 transitions. [2024-11-22 13:17:55,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:17:55,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 160 [2024-11-22 13:17:55,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:17:55,018 INFO L225 Difference]: With dead ends: 259 [2024-11-22 13:17:55,018 INFO L226 Difference]: Without dead ends: 132 [2024-11-22 13:17:55,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:17:55,020 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 2 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 13:17:55,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 428 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 13:17:55,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-22 13:17:55,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2024-11-22 13:17:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 107 states have (on average 1.3364485981308412) internal successors, (143), 107 states have internal predecessors, (143), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 13:17:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 185 transitions. [2024-11-22 13:17:55,048 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 185 transitions. Word has length 160 [2024-11-22 13:17:55,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:17:55,048 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 185 transitions. [2024-11-22 13:17:55,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-22 13:17:55,048 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 185 transitions. [2024-11-22 13:17:55,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-22 13:17:55,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:17:55,052 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:17:55,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:17:55,052 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:17:55,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:17:55,054 INFO L85 PathProgramCache]: Analyzing trace with hash -390938977, now seen corresponding path program 1 times [2024-11-22 13:17:55,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:17:55,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487576291] [2024-11-22 13:17:55,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:17:55,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:17:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:17:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 13:17:59,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:17:59,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487576291] [2024-11-22 13:17:59,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487576291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:17:59,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:17:59,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 13:17:59,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121224377] [2024-11-22 13:17:59,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:17:59,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 13:17:59,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:17:59,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 13:17:59,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:17:59,110 INFO L87 Difference]: Start difference. First operand 130 states and 185 transitions. Second operand has 11 states, 10 states have (on average 5.8) internal successors, (58), 11 states have internal predecessors, (58), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-22 13:18:00,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:18:00,878 INFO L93 Difference]: Finished difference Result 306 states and 435 transitions. [2024-11-22 13:18:00,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:18:00,879 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.8) internal successors, (58), 11 states have internal predecessors, (58), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 160 [2024-11-22 13:18:00,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:18:00,882 INFO L225 Difference]: With dead ends: 306 [2024-11-22 13:18:00,882 INFO L226 Difference]: Without dead ends: 179 [2024-11-22 13:18:00,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:18:00,884 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 184 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-22 13:18:00,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 738 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-22 13:18:00,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-22 13:18:00,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 136. [2024-11-22 13:18:00,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 113 states have (on average 1.336283185840708) internal successors, (151), 113 states have internal predecessors, (151), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 13:18:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 193 transitions. [2024-11-22 13:18:00,920 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 193 transitions. Word has length 160 [2024-11-22 13:18:00,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:18:00,920 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 193 transitions. [2024-11-22 13:18:00,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.8) internal successors, (58), 11 states have internal predecessors, (58), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-22 13:18:00,921 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 193 transitions. [2024-11-22 13:18:00,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-22 13:18:00,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:18:00,923 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:18:00,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:18:00,923 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:18:00,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:18:00,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1793675834, now seen corresponding path program 1 times [2024-11-22 13:18:00,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:18:00,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961288904] [2024-11-22 13:18:00,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:18:00,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:18:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:18:01,148 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 24 proven. 36 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-22 13:18:01,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:18:01,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961288904] [2024-11-22 13:18:01,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961288904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:18:01,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810926326] [2024-11-22 13:18:01,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:18:01,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:18:01,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:18:01,152 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:18:01,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:18:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:18:01,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 13:18:01,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:18:01,454 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 13:18:01,454 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:18:01,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810926326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:18:01,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:18:01,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-22 13:18:01,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191754806] [2024-11-22 13:18:01,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:18:01,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:18:01,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:18:01,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:18:01,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:18:01,457 INFO L87 Difference]: Start difference. First operand 136 states and 193 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-22 13:18:01,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:18:01,502 INFO L93 Difference]: Finished difference Result 272 states and 387 transitions. [2024-11-22 13:18:01,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:18:01,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 161 [2024-11-22 13:18:01,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:18:01,505 INFO L225 Difference]: With dead ends: 272 [2024-11-22 13:18:01,505 INFO L226 Difference]: Without dead ends: 139 [2024-11-22 13:18:01,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:18:01,506 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:18:01,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 627 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 13:18:01,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-22 13:18:01,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-11-22 13:18:01,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 116 states have (on average 1.3275862068965518) internal successors, (154), 116 states have internal predecessors, (154), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 13:18:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 196 transitions. [2024-11-22 13:18:01,525 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 196 transitions. Word has length 161 [2024-11-22 13:18:01,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:18:01,526 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 196 transitions. [2024-11-22 13:18:01,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-22 13:18:01,526 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 196 transitions. [2024-11-22 13:18:01,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-22 13:18:01,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:18:01,529 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:18:01,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 13:18:01,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-22 13:18:01,731 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:18:01,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:18:01,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1861974629, now seen corresponding path program 1 times [2024-11-22 13:18:01,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:18:01,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081951479] [2024-11-22 13:18:01,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:18:01,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:18:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:18:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 13:18:02,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:18:02,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081951479] [2024-11-22 13:18:02,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081951479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:18:02,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:18:02,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:18:02,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857799556] [2024-11-22 13:18:02,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:18:02,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:18:02,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:18:02,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:18:02,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:18:02,904 INFO L87 Difference]: Start difference. First operand 139 states and 196 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-22 13:18:03,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:18:03,640 INFO L93 Difference]: Finished difference Result 324 states and 456 transitions. [2024-11-22 13:18:03,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:18:03,642 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 161 [2024-11-22 13:18:03,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:18:03,643 INFO L225 Difference]: With dead ends: 324 [2024-11-22 13:18:03,644 INFO L226 Difference]: Without dead ends: 188 [2024-11-22 13:18:03,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:18:03,645 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 235 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 13:18:03,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 572 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 13:18:03,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-22 13:18:03,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 139. [2024-11-22 13:18:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 116 states have (on average 1.3275862068965518) internal successors, (154), 116 states have internal predecessors, (154), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 13:18:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 196 transitions. [2024-11-22 13:18:03,666 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 196 transitions. Word has length 161 [2024-11-22 13:18:03,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:18:03,667 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 196 transitions. [2024-11-22 13:18:03,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-22 13:18:03,668 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 196 transitions. [2024-11-22 13:18:03,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-22 13:18:03,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:18:03,669 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:18:03,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:18:03,670 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:18:03,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:18:03,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1805546709, now seen corresponding path program 1 times [2024-11-22 13:18:03,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:18:03,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160709077] [2024-11-22 13:18:03,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:18:03,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:18:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:18:07,522 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 13:18:07,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:18:07,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160709077] [2024-11-22 13:18:07,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160709077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:18:07,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:18:07,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 13:18:07,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455907478] [2024-11-22 13:18:07,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:18:07,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:18:07,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:18:07,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:18:07,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:18:07,525 INFO L87 Difference]: Start difference. First operand 139 states and 196 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-22 13:18:08,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:18:08,903 INFO L93 Difference]: Finished difference Result 323 states and 454 transitions. [2024-11-22 13:18:08,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:18:08,904 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 162 [2024-11-22 13:18:08,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:18:08,906 INFO L225 Difference]: With dead ends: 323 [2024-11-22 13:18:08,906 INFO L226 Difference]: Without dead ends: 187 [2024-11-22 13:18:08,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:18:08,907 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 251 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:18:08,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 646 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 13:18:08,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-22 13:18:08,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 139. [2024-11-22 13:18:08,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 116 states have (on average 1.3275862068965518) internal successors, (154), 116 states have internal predecessors, (154), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 13:18:08,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 196 transitions. [2024-11-22 13:18:08,925 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 196 transitions. Word has length 162 [2024-11-22 13:18:08,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:18:08,925 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 196 transitions. [2024-11-22 13:18:08,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-22 13:18:08,926 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 196 transitions. [2024-11-22 13:18:08,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-22 13:18:08,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:18:08,927 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:18:08,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 13:18:08,928 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:18:08,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:18:08,928 INFO L85 PathProgramCache]: Analyzing trace with hash 665778695, now seen corresponding path program 1 times [2024-11-22 13:18:08,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:18:08,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605362426] [2024-11-22 13:18:08,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:18:08,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:18:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:18:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 13:18:09,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:18:09,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605362426] [2024-11-22 13:18:09,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605362426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:18:09,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:18:09,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:18:09,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336708239] [2024-11-22 13:18:09,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:18:09,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:18:09,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:18:09,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:18:09,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:18:09,233 INFO L87 Difference]: Start difference. First operand 139 states and 196 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-22 13:18:09,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:18:09,400 INFO L93 Difference]: Finished difference Result 321 states and 451 transitions. [2024-11-22 13:18:09,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:18:09,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 163 [2024-11-22 13:18:09,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:18:09,402 INFO L225 Difference]: With dead ends: 321 [2024-11-22 13:18:09,402 INFO L226 Difference]: Without dead ends: 185 [2024-11-22 13:18:09,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:18:09,403 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 55 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 13:18:09,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 681 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 13:18:09,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-22 13:18:09,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 142. [2024-11-22 13:18:09,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 119 states have (on average 1.319327731092437) internal successors, (157), 119 states have internal predecessors, (157), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-22 13:18:09,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 199 transitions. [2024-11-22 13:18:09,425 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 199 transitions. Word has length 163 [2024-11-22 13:18:09,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:18:09,425 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 199 transitions. [2024-11-22 13:18:09,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-22 13:18:09,426 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 199 transitions. [2024-11-22 13:18:09,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-22 13:18:09,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:18:09,427 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:18:09,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 13:18:09,428 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:18:09,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:18:09,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1401103225, now seen corresponding path program 1 times [2024-11-22 13:18:09,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:18:09,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976759147] [2024-11-22 13:18:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:18:09,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:18:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:18:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 13:18:11,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:18:11,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976759147] [2024-11-22 13:18:11,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976759147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:18:11,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:18:11,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:18:11,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436592521] [2024-11-22 13:18:11,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:18:11,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:18:11,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:18:11,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:18:11,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:18:11,496 INFO L87 Difference]: Start difference. First operand 142 states and 199 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-22 13:18:11,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:18:11,881 INFO L93 Difference]: Finished difference Result 412 states and 580 transitions. [2024-11-22 13:18:11,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:18:11,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 163 [2024-11-22 13:18:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:18:11,884 INFO L225 Difference]: With dead ends: 412 [2024-11-22 13:18:11,884 INFO L226 Difference]: Without dead ends: 273 [2024-11-22 13:18:11,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:18:11,886 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 198 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 13:18:11,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 585 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 13:18:11,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-22 13:18:11,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 264. [2024-11-22 13:18:11,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 219 states have (on average 1.3105022831050228) internal successors, (287), 219 states have internal predecessors, (287), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-22 13:18:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 371 transitions. [2024-11-22 13:18:11,932 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 371 transitions. Word has length 163 [2024-11-22 13:18:11,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:18:11,933 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 371 transitions. [2024-11-22 13:18:11,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-22 13:18:11,933 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 371 transitions. [2024-11-22 13:18:11,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-22 13:18:11,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:18:11,936 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:18:11,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 13:18:11,936 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:18:11,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:18:11,937 INFO L85 PathProgramCache]: Analyzing trace with hash -596019651, now seen corresponding path program 1 times [2024-11-22 13:18:11,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:18:11,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478890122] [2024-11-22 13:18:11,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:18:11,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:18:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:18:13,066 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 13:18:13,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:18:13,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478890122] [2024-11-22 13:18:13,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478890122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:18:13,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:18:13,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 13:18:13,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239485932] [2024-11-22 13:18:13,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:18:13,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:18:13,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:18:13,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:18:13,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:18:13,068 INFO L87 Difference]: Start difference. First operand 264 states and 371 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-22 13:18:13,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:18:13,716 INFO L93 Difference]: Finished difference Result 496 states and 694 transitions. [2024-11-22 13:18:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:18:13,717 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 165 [2024-11-22 13:18:13,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:18:13,721 INFO L225 Difference]: With dead ends: 496 [2024-11-22 13:18:13,721 INFO L226 Difference]: Without dead ends: 357 [2024-11-22 13:18:13,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:18:13,726 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 247 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 13:18:13,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 547 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 13:18:13,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-22 13:18:13,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 273. [2024-11-22 13:18:13,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 228 states have (on average 1.3114035087719298) internal successors, (299), 228 states have internal predecessors, (299), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-22 13:18:13,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 383 transitions. [2024-11-22 13:18:13,765 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 383 transitions. Word has length 165 [2024-11-22 13:18:13,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:18:13,768 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 383 transitions. [2024-11-22 13:18:13,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-22 13:18:13,768 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 383 transitions. [2024-11-22 13:18:13,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-22 13:18:13,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:18:13,770 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:18:13,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 13:18:13,770 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:18:13,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:18:13,771 INFO L85 PathProgramCache]: Analyzing trace with hash -2069601347, now seen corresponding path program 1 times [2024-11-22 13:18:13,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:18:13,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168857055] [2024-11-22 13:18:13,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:18:13,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:18:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:18:17,627 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 13:18:17,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:18:17,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168857055] [2024-11-22 13:18:17,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168857055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:18:17,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:18:17,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 13:18:17,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481072832] [2024-11-22 13:18:17,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:18:17,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:18:17,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:18:17,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:18:17,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:18:17,629 INFO L87 Difference]: Start difference. First operand 273 states and 383 transitions. Second operand has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-22 13:18:18,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:18:18,857 INFO L93 Difference]: Finished difference Result 633 states and 879 transitions. [2024-11-22 13:18:18,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:18:18,859 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 165 [2024-11-22 13:18:18,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:18:18,861 INFO L225 Difference]: With dead ends: 633 [2024-11-22 13:18:18,861 INFO L226 Difference]: Without dead ends: 363 [2024-11-22 13:18:18,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:18:18,863 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 309 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:18:18,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 467 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 13:18:18,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-22 13:18:18,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 357. [2024-11-22 13:18:18,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 306 states have (on average 1.3071895424836601) internal successors, (400), 308 states have internal predecessors, (400), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-22 13:18:18,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 492 transitions. [2024-11-22 13:18:18,908 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 492 transitions. Word has length 165 [2024-11-22 13:18:18,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:18:18,908 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 492 transitions. [2024-11-22 13:18:18,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-22 13:18:18,909 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 492 transitions. [2024-11-22 13:18:18,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-22 13:18:18,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:18:18,910 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:18:18,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 13:18:18,911 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:18:18,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:18:18,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1376537237, now seen corresponding path program 1 times [2024-11-22 13:18:18,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:18:18,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407618784] [2024-11-22 13:18:18,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:18:18,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:18:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:18:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 13:18:19,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:18:19,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407618784] [2024-11-22 13:18:19,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407618784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:18:19,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:18:19,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:18:19,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236156262] [2024-11-22 13:18:19,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:18:19,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:18:19,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:18:19,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:18:19,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:18:19,013 INFO L87 Difference]: Start difference. First operand 357 states and 492 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-22 13:18:19,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:18:19,076 INFO L93 Difference]: Finished difference Result 711 states and 981 transitions. [2024-11-22 13:18:19,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:18:19,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 165 [2024-11-22 13:18:19,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:18:19,080 INFO L225 Difference]: With dead ends: 711 [2024-11-22 13:18:19,081 INFO L226 Difference]: Without dead ends: 357 [2024-11-22 13:18:19,082 INFO L431 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 [2024-11-22 13:18:19,082 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:18:19,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 13:18:19,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-22 13:18:19,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2024-11-22 13:18:19,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 306 states have (on average 1.2941176470588236) internal successors, (396), 308 states have internal predecessors, (396), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-22 13:18:19,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 488 transitions. [2024-11-22 13:18:19,127 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 488 transitions. Word has length 165 [2024-11-22 13:18:19,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:18:19,127 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 488 transitions. [2024-11-22 13:18:19,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-22 13:18:19,128 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 488 transitions. [2024-11-22 13:18:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-22 13:18:19,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:18:19,129 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:18:19,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 13:18:19,129 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:18:19,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:18:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash -2126923603, now seen corresponding path program 1 times [2024-11-22 13:18:19,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:18:19,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336491961] [2024-11-22 13:18:19,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:18:19,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:18:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:18:23,391 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 13:18:23,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:18:23,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336491961] [2024-11-22 13:18:23,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336491961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:18:23,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:18:23,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-22 13:18:23,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711078527] [2024-11-22 13:18:23,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:18:23,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 13:18:23,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:18:23,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 13:18:23,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:18:23,394 INFO L87 Difference]: Start difference. First operand 357 states and 488 transitions. Second operand has 16 states, 15 states have (on average 4.266666666666667) internal successors, (64), 16 states have internal predecessors, (64), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-22 13:18:25,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:18:25,102 INFO L93 Difference]: Finished difference Result 590 states and 805 transitions. [2024-11-22 13:18:25,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:18:25,103 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.266666666666667) internal successors, (64), 16 states have internal predecessors, (64), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 166 [2024-11-22 13:18:25,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:18:25,107 INFO L225 Difference]: With dead ends: 590 [2024-11-22 13:18:25,107 INFO L226 Difference]: Without dead ends: 396 [2024-11-22 13:18:25,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2024-11-22 13:18:25,109 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 359 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-22 13:18:25,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 718 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-22 13:18:25,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-22 13:18:25,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 351. [2024-11-22 13:18:25,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 300 states have (on average 1.29) internal successors, (387), 302 states have internal predecessors, (387), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-22 13:18:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 479 transitions. [2024-11-22 13:18:25,160 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 479 transitions. Word has length 166 [2024-11-22 13:18:25,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:18:25,161 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 479 transitions. [2024-11-22 13:18:25,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.266666666666667) internal successors, (64), 16 states have internal predecessors, (64), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-22 13:18:25,162 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 479 transitions. [2024-11-22 13:18:25,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-22 13:18:25,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:18:25,163 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:18:25,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 13:18:25,164 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:18:25,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:18:25,165 INFO L85 PathProgramCache]: Analyzing trace with hash 694461997, now seen corresponding path program 1 times [2024-11-22 13:18:25,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:18:25,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412515745] [2024-11-22 13:18:25,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:18:25,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:18:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:18:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 13:18:27,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:18:27,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412515745] [2024-11-22 13:18:27,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412515745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:18:27,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:18:27,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 13:18:27,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867691043] [2024-11-22 13:18:27,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:18:27,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 13:18:27,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:18:27,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 13:18:27,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:18:27,664 INFO L87 Difference]: Start difference. First operand 351 states and 479 transitions. Second operand has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 13 states have internal predecessors, (64), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-22 13:18:28,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:18:28,861 INFO L93 Difference]: Finished difference Result 808 states and 1101 transitions. [2024-11-22 13:18:28,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:18:28,862 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 13 states have internal predecessors, (64), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 166 [2024-11-22 13:18:28,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:18:28,864 INFO L225 Difference]: With dead ends: 808 [2024-11-22 13:18:28,864 INFO L226 Difference]: Without dead ends: 460 [2024-11-22 13:18:28,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2024-11-22 13:18:28,866 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 277 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 13:18:28,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 822 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 13:18:28,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-11-22 13:18:28,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 381. [2024-11-22 13:18:28,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 330 states have (on average 1.2969696969696969) internal successors, (428), 332 states have internal predecessors, (428), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-22 13:18:28,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 520 transitions. [2024-11-22 13:18:28,911 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 520 transitions. Word has length 166 [2024-11-22 13:18:28,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:18:28,912 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 520 transitions. [2024-11-22 13:18:28,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 13 states have internal predecessors, (64), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-22 13:18:28,912 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 520 transitions. [2024-11-22 13:18:28,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-22 13:18:28,913 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:18:28,913 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:18:28,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 13:18:28,914 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:18:28,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:18:28,915 INFO L85 PathProgramCache]: Analyzing trace with hash 835010607, now seen corresponding path program 1 times [2024-11-22 13:18:28,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:18:28,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553841077] [2024-11-22 13:18:28,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:18:28,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:18:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:18:33,096 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 13:18:33,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:18:33,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553841077] [2024-11-22 13:18:33,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553841077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:18:33,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:18:33,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-22 13:18:33,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138076316] [2024-11-22 13:18:33,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:18:33,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 13:18:33,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:18:33,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 13:18:33,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:18:33,100 INFO L87 Difference]: Start difference. First operand 381 states and 520 transitions. Second operand has 16 states, 14 states have (on average 4.571428571428571) internal successors, (64), 16 states have internal predecessors, (64), 4 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 4 states have call successors, (21) [2024-11-22 13:18:36,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:18:36,389 INFO L93 Difference]: Finished difference Result 878 states and 1197 transitions. [2024-11-22 13:18:36,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:18:36,390 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.571428571428571) internal successors, (64), 16 states have internal predecessors, (64), 4 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 4 states have call successors, (21) Word has length 166 [2024-11-22 13:18:36,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:18:36,393 INFO L225 Difference]: With dead ends: 878 [2024-11-22 13:18:36,393 INFO L226 Difference]: Without dead ends: 500 [2024-11-22 13:18:36,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2024-11-22 13:18:36,395 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 286 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-22 13:18:36,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 951 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1535 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-22 13:18:36,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-11-22 13:18:36,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 413. [2024-11-22 13:18:36,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 362 states have (on average 1.3066298342541436) internal successors, (473), 364 states have internal predecessors, (473), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-22 13:18:36,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 565 transitions. [2024-11-22 13:18:36,451 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 565 transitions. Word has length 166 [2024-11-22 13:18:36,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:18:36,452 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 565 transitions. [2024-11-22 13:18:36,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.571428571428571) internal successors, (64), 16 states have internal predecessors, (64), 4 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 4 states have call successors, (21) [2024-11-22 13:18:36,452 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 565 transitions. [2024-11-22 13:18:36,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-22 13:18:36,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:18:36,453 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:18:36,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 13:18:36,454 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:18:36,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:18:36,454 INFO L85 PathProgramCache]: Analyzing trace with hash -176106643, now seen corresponding path program 1 times [2024-11-22 13:18:36,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:18:36,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568653710] [2024-11-22 13:18:36,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:18:36,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:18:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:18:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 13:18:38,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:18:38,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568653710] [2024-11-22 13:18:38,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568653710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:18:38,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:18:38,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 13:18:38,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074949677] [2024-11-22 13:18:38,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:18:38,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 13:18:38,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:18:38,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 13:18:38,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:18:38,655 INFO L87 Difference]: Start difference. First operand 413 states and 565 transitions. Second operand has 11 states, 10 states have (on average 6.4) internal successors, (64), 11 states have internal predecessors, (64), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-22 13:18:39,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:18:39,414 INFO L93 Difference]: Finished difference Result 902 states and 1228 transitions. [2024-11-22 13:18:39,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:18:39,415 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.4) internal successors, (64), 11 states have internal predecessors, (64), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 166 [2024-11-22 13:18:39,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:18:39,418 INFO L225 Difference]: With dead ends: 902 [2024-11-22 13:18:39,419 INFO L226 Difference]: Without dead ends: 492 [2024-11-22 13:18:39,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-22 13:18:39,421 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 298 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 13:18:39,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 549 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 13:18:39,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-22 13:18:39,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 413. [2024-11-22 13:18:39,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 362 states have (on average 1.3011049723756907) internal successors, (471), 364 states have internal predecessors, (471), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-22 13:18:39,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 563 transitions. [2024-11-22 13:18:39,481 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 563 transitions. Word has length 166 [2024-11-22 13:18:39,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:18:39,482 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 563 transitions. [2024-11-22 13:18:39,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.4) internal successors, (64), 11 states have internal predecessors, (64), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-22 13:18:39,482 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 563 transitions. [2024-11-22 13:18:39,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-22 13:18:39,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:18:39,483 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:18:39,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 13:18:39,483 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:18:39,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:18:39,484 INFO L85 PathProgramCache]: Analyzing trace with hash 325537517, now seen corresponding path program 1 times [2024-11-22 13:18:39,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:18:39,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977766087] [2024-11-22 13:18:39,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:18:39,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:18:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:18:41,437 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-22 13:18:41,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:18:41,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977766087] [2024-11-22 13:18:41,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977766087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:18:41,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:18:41,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 13:18:41,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422383621] [2024-11-22 13:18:41,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:18:41,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:18:41,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:18:41,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:18:41,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:18:41,439 INFO L87 Difference]: Start difference. First operand 413 states and 563 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-22 13:18:42,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:18:42,310 INFO L93 Difference]: Finished difference Result 1005 states and 1362 transitions. [2024-11-22 13:18:42,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:18:42,311 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 166 [2024-11-22 13:18:42,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:18:42,315 INFO L225 Difference]: With dead ends: 1005 [2024-11-22 13:18:42,315 INFO L226 Difference]: Without dead ends: 595 [2024-11-22 13:18:42,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:18:42,317 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 249 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 13:18:42,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 546 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 13:18:42,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-11-22 13:18:42,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 420. [2024-11-22 13:18:42,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 369 states have (on average 1.2981029810298104) internal successors, (479), 371 states have internal predecessors, (479), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-22 13:18:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 571 transitions. [2024-11-22 13:18:42,379 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 571 transitions. Word has length 166 [2024-11-22 13:18:42,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:18:42,380 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 571 transitions. [2024-11-22 13:18:42,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 2 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-22 13:18:42,380 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 571 transitions. [2024-11-22 13:18:42,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-22 13:18:42,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:18:42,381 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:18:42,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 13:18:42,382 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:18:42,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:18:42,382 INFO L85 PathProgramCache]: Analyzing trace with hash -685579733, now seen corresponding path program 1 times [2024-11-22 13:18:42,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:18:42,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139815532] [2024-11-22 13:18:42,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:18:42,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:18:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat