./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-18.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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-18.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 378186c6d9208dcac7e742ba7e3d709cb5ca4759d0a6109e61503d5010b43317 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:14:39,798 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:14:39,880 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:14:39,885 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:14:39,887 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:14:39,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:14:39,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:14:39,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:14:39,924 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:14:39,924 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:14:39,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:14:39,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:14:39,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:14:39,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:14:39,926 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:14:39,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:14:39,927 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:14:39,928 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:14:39,928 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:14:39,928 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:14:39,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:14:39,931 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:14:39,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:14:39,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:14:39,932 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:14:39,932 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:14:39,933 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:14:39,933 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:14:39,933 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:14:39,933 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:14:39,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:14:39,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:14:39,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:14:39,935 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:14:39,935 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:14:39,938 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:14:39,939 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:14:39,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:14:39,940 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:14:39,940 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:14:39,940 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:14:39,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:14:39,941 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 378186c6d9208dcac7e742ba7e3d709cb5ca4759d0a6109e61503d5010b43317 [2024-11-19 01:14:40,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:14:40,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:14:40,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:14:40,237 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:14:40,237 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:14:40,239 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-18.i [2024-11-19 01:14:41,706 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:14:41,919 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:14:41,921 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-18.i [2024-11-19 01:14:41,930 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff535df1/8358de6a836a4cdcb7d1f0adee660832/FLAG176e97d3d [2024-11-19 01:14:41,948 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dff535df1/8358de6a836a4cdcb7d1f0adee660832 [2024-11-19 01:14:41,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:14:41,953 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:14:41,954 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:14:41,954 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:14:41,961 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:14:41,962 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:14:41" (1/1) ... [2024-11-19 01:14:41,963 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170d242c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:41, skipping insertion in model container [2024-11-19 01:14:41,964 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:14:41" (1/1) ... [2024-11-19 01:14:42,001 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:14:42,212 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-18.i[917,930] [2024-11-19 01:14:42,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:14:42,311 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:14:42,325 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-18.i[917,930] [2024-11-19 01:14:42,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:14:42,419 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:14:42,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:42 WrapperNode [2024-11-19 01:14:42,430 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:14:42,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:14:42,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:14:42,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:14:42,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:42" (1/1) ... [2024-11-19 01:14:42,467 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:42" (1/1) ... [2024-11-19 01:14:42,510 INFO L138 Inliner]: procedures = 30, calls = 139, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 485 [2024-11-19 01:14:42,511 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:14:42,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:14:42,512 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:14:42,512 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:14:42,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:42" (1/1) ... [2024-11-19 01:14:42,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:42" (1/1) ... [2024-11-19 01:14:42,530 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:42" (1/1) ... [2024-11-19 01:14:42,541 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-11-19 01:14:42,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:42" (1/1) ... [2024-11-19 01:14:42,542 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:42" (1/1) ... [2024-11-19 01:14:42,562 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:42" (1/1) ... [2024-11-19 01:14:42,570 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:42" (1/1) ... [2024-11-19 01:14:42,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:42" (1/1) ... [2024-11-19 01:14:42,579 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:42" (1/1) ... [2024-11-19 01:14:42,586 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:14:42,587 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:14:42,587 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:14:42,593 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:14:42,594 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:42" (1/1) ... [2024-11-19 01:14:42,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:14:42,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:14:42,633 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) [2024-11-19 01:14:42,639 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 [2024-11-19 01:14:42,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:14:42,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-19 01:14:42,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-11-19 01:14:42,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-19 01:14:42,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-19 01:14:42,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-19 01:14:42,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-19 01:14:42,691 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 01:14:42,691 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 01:14:42,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-19 01:14:42,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:14:42,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:14:42,835 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:14:42,837 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:14:43,474 INFO L? ?]: Removed 145 outVars from TransFormulas that were not future-live. [2024-11-19 01:14:43,476 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:14:43,497 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:14:43,498 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 01:14:43,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:14:43 BoogieIcfgContainer [2024-11-19 01:14:43,498 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:14:43,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:14:43,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:14:43,504 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:14:43,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:14:41" (1/3) ... [2024-11-19 01:14:43,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf2169c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:14:43, skipping insertion in model container [2024-11-19 01:14:43,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:42" (2/3) ... [2024-11-19 01:14:43,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf2169c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:14:43, skipping insertion in model container [2024-11-19 01:14:43,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:14:43" (3/3) ... [2024-11-19 01:14:43,506 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-18.i [2024-11-19 01:14:43,524 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:14:43,524 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:14:43,588 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:14:43,596 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;@56f754ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:14:43,597 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 01:14:43,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 93 states have (on average 1.4623655913978495) internal successors, (136), 94 states have internal predecessors, (136), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-19 01:14:43,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-19 01:14:43,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:14:43,614 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:14:43,614 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:14:43,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:14:43,619 INFO L85 PathProgramCache]: Analyzing trace with hash -928902654, now seen corresponding path program 1 times [2024-11-19 01:14:43,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:14:43,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005658608] [2024-11-19 01:14:43,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:43,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:14:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-19 01:14:44,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:14:44,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005658608] [2024-11-19 01:14:44,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005658608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:14:44,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174417513] [2024-11-19 01:14:44,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:44,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:14:44,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:14:44,071 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) [2024-11-19 01:14:44,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:14:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:44,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 01:14:44,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:14:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-19 01:14:44,348 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:14:44,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174417513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:14:44,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:14:44,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 01:14:44,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661838167] [2024-11-19 01:14:44,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:14:44,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 01:14:44,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:14:44,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 01:14:44,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:14:44,430 INFO L87 Difference]: Start difference. First operand has 108 states, 93 states have (on average 1.4623655913978495) internal successors, (136), 94 states have internal predecessors, (136), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:14:44,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:14:44,468 INFO L93 Difference]: Finished difference Result 209 states and 326 transitions. [2024-11-19 01:14:44,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 01:14:44,470 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2024-11-19 01:14:44,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:14:44,477 INFO L225 Difference]: With dead ends: 209 [2024-11-19 01:14:44,478 INFO L226 Difference]: Without dead ends: 104 [2024-11-19 01:14:44,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:14:44,484 INFO L432 NwaCegarLoop]: 153 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, 153 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 [2024-11-19 01:14:44,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:14:44,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-19 01:14:44,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-19 01:14:44,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 90 states have (on average 1.4333333333333333) internal successors, (129), 90 states have internal predecessors, (129), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-19 01:14:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 153 transitions. [2024-11-19 01:14:44,535 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 153 transitions. Word has length 107 [2024-11-19 01:14:44,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:14:44,536 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 153 transitions. [2024-11-19 01:14:44,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:14:44,537 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 153 transitions. [2024-11-19 01:14:44,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-19 01:14:44,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:14:44,540 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:14:44,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:14:44,741 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 [2024-11-19 01:14:44,741 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:14:44,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:14:44,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2026293422, now seen corresponding path program 1 times [2024-11-19 01:14:44,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:14:44,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679215872] [2024-11-19 01:14:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:44,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:14:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:46,678 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:14:46,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:14:46,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679215872] [2024-11-19 01:14:46,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679215872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:14:46,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:14:46,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:14:46,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973499352] [2024-11-19 01:14:46,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:14:46,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:14:46,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:14:46,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:14:46,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:14:46,684 INFO L87 Difference]: Start difference. First operand 104 states and 153 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:14:47,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:14:47,126 INFO L93 Difference]: Finished difference Result 306 states and 453 transitions. [2024-11-19 01:14:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:14:47,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2024-11-19 01:14:47,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:14:47,129 INFO L225 Difference]: With dead ends: 306 [2024-11-19 01:14:47,129 INFO L226 Difference]: Without dead ends: 205 [2024-11-19 01:14:47,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:14:47,133 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 213 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:14:47,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 646 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 01:14:47,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-19 01:14:47,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 198. [2024-11-19 01:14:47,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 171 states have (on average 1.432748538011696) internal successors, (245), 171 states have internal predecessors, (245), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 01:14:47,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 293 transitions. [2024-11-19 01:14:47,173 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 293 transitions. Word has length 107 [2024-11-19 01:14:47,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:14:47,174 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 293 transitions. [2024-11-19 01:14:47,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:14:47,174 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 293 transitions. [2024-11-19 01:14:47,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-19 01:14:47,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:14:47,177 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:14:47,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:14:47,177 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:14:47,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:14:47,178 INFO L85 PathProgramCache]: Analyzing trace with hash 668226393, now seen corresponding path program 1 times [2024-11-19 01:14:47,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:14:47,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638052457] [2024-11-19 01:14:47,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:47,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:14:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:48,589 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:14:48,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:14:48,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638052457] [2024-11-19 01:14:48,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638052457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:14:48,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:14:48,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:14:48,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401545913] [2024-11-19 01:14:48,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:14:48,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:14:48,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:14:48,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:14:48,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:14:48,593 INFO L87 Difference]: Start difference. First operand 198 states and 293 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:14:49,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:14:49,071 INFO L93 Difference]: Finished difference Result 494 states and 733 transitions. [2024-11-19 01:14:49,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:14:49,072 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2024-11-19 01:14:49,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:14:49,074 INFO L225 Difference]: With dead ends: 494 [2024-11-19 01:14:49,074 INFO L226 Difference]: Without dead ends: 299 [2024-11-19 01:14:49,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:14:49,081 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 302 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 01:14:49,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 436 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 01:14:49,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-19 01:14:49,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 294. [2024-11-19 01:14:49,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 254 states have (on average 1.4291338582677164) internal successors, (363), 254 states have internal predecessors, (363), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-19 01:14:49,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 435 transitions. [2024-11-19 01:14:49,133 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 435 transitions. Word has length 108 [2024-11-19 01:14:49,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:14:49,135 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 435 transitions. [2024-11-19 01:14:49,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:14:49,135 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 435 transitions. [2024-11-19 01:14:49,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-19 01:14:49,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:14:49,140 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:14:49,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:14:49,143 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:14:49,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:14:49,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1488436341, now seen corresponding path program 1 times [2024-11-19 01:14:49,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:14:49,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40513450] [2024-11-19 01:14:49,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:49,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:14:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:49,516 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:14:49,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:14:49,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40513450] [2024-11-19 01:14:49,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40513450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:14:49,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:14:49,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:14:49,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711627470] [2024-11-19 01:14:49,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:14:49,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:14:49,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:14:49,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:14:49,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:14:49,519 INFO L87 Difference]: Start difference. First operand 294 states and 435 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:14:49,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:14:49,561 INFO L93 Difference]: Finished difference Result 494 states and 733 transitions. [2024-11-19 01:14:49,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:14:49,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108 [2024-11-19 01:14:49,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:14:49,564 INFO L225 Difference]: With dead ends: 494 [2024-11-19 01:14:49,565 INFO L226 Difference]: Without dead ends: 297 [2024-11-19 01:14:49,566 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 [2024-11-19 01:14:49,567 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 3 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:14:49,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 427 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:14:49,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-19 01:14:49,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 296. [2024-11-19 01:14:49,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 256 states have (on average 1.42578125) internal successors, (365), 256 states have internal predecessors, (365), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-19 01:14:49,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 437 transitions. [2024-11-19 01:14:49,601 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 437 transitions. Word has length 108 [2024-11-19 01:14:49,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:14:49,602 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 437 transitions. [2024-11-19 01:14:49,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:14:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 437 transitions. [2024-11-19 01:14:49,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-19 01:14:49,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:14:49,604 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:14:49,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:14:49,604 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:14:49,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:14:49,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1218183053, now seen corresponding path program 1 times [2024-11-19 01:14:49,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:14:49,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188816487] [2024-11-19 01:14:49,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:49,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:14:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:14:49,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:14:49,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188816487] [2024-11-19 01:14:49,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188816487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:14:49,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:14:49,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:14:49,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048820730] [2024-11-19 01:14:49,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:14:49,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:14:49,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:14:49,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:14:49,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:14:49,872 INFO L87 Difference]: Start difference. First operand 296 states and 437 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:14:49,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:14:49,920 INFO L93 Difference]: Finished difference Result 401 states and 592 transitions. [2024-11-19 01:14:49,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:14:49,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108 [2024-11-19 01:14:49,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:14:49,923 INFO L225 Difference]: With dead ends: 401 [2024-11-19 01:14:49,925 INFO L226 Difference]: Without dead ends: 299 [2024-11-19 01:14:49,925 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 [2024-11-19 01:14:49,927 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 3 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:14:49,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 429 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:14:49,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-19 01:14:49,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 297. [2024-11-19 01:14:49,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 257 states have (on average 1.424124513618677) internal successors, (366), 257 states have internal predecessors, (366), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-19 01:14:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 438 transitions. [2024-11-19 01:14:49,955 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 438 transitions. Word has length 108 [2024-11-19 01:14:49,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:14:49,956 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 438 transitions. [2024-11-19 01:14:49,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:14:49,957 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 438 transitions. [2024-11-19 01:14:49,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-19 01:14:49,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:14:49,960 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:14:49,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:14:49,960 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:14:49,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:14:49,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1476348491, now seen corresponding path program 1 times [2024-11-19 01:14:49,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:14:49,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994613330] [2024-11-19 01:14:49,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:49,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:14:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-19 01:14:51,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:14:51,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994613330] [2024-11-19 01:14:51,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994613330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:14:51,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122229852] [2024-11-19 01:14:51,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:51,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:14:51,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:14:51,400 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) [2024-11-19 01:14:51,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:14:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:51,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-19 01:14:51,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:14:51,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:14:52,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-19 01:14:52,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-19 01:14:52,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-19 01:14:52,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-19 01:14:53,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-19 01:14:53,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-19 01:14:53,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:14:53,541 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2024-11-19 01:14:53,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2024-11-19 01:14:53,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:14:53,774 INFO L349 Elim1Store]: treesize reduction 68, result has 42.4 percent of original size [2024-11-19 01:14:53,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 66 [2024-11-19 01:14:55,168 INFO L349 Elim1Store]: treesize reduction 144, result has 76.4 percent of original size [2024-11-19 01:14:55,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 197 treesize of output 553 [2024-11-19 01:15:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 9 proven. 107 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-19 01:15:01,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:15:01,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122229852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:15:01,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:15:01,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2024-11-19 01:15:01,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053533924] [2024-11-19 01:15:01,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 01:15:01,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 01:15:01,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:01,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 01:15:01,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2024-11-19 01:15:01,877 INFO L87 Difference]: Start difference. First operand 297 states and 438 transitions. Second operand has 24 states, 22 states have (on average 4.409090909090909) internal successors, (97), 23 states have internal predecessors, (97), 6 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-19 01:15:03,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:03,643 INFO L93 Difference]: Finished difference Result 835 states and 1220 transitions. [2024-11-19 01:15:03,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 01:15:03,644 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 4.409090909090909) internal successors, (97), 23 states have internal predecessors, (97), 6 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) Word has length 108 [2024-11-19 01:15:03,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:03,647 INFO L225 Difference]: With dead ends: 835 [2024-11-19 01:15:03,647 INFO L226 Difference]: Without dead ends: 541 [2024-11-19 01:15:03,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=266, Invalid=1216, Unknown=0, NotChecked=0, Total=1482 [2024-11-19 01:15:03,649 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 807 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:03,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 888 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 01:15:03,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-11-19 01:15:03,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 328. [2024-11-19 01:15:03,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 285 states have (on average 1.3894736842105264) internal successors, (396), 285 states have internal predecessors, (396), 36 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-19 01:15:03,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 468 transitions. [2024-11-19 01:15:03,673 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 468 transitions. Word has length 108 [2024-11-19 01:15:03,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:03,673 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 468 transitions. [2024-11-19 01:15:03,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 4.409090909090909) internal successors, (97), 23 states have internal predecessors, (97), 6 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (24), 4 states have call predecessors, (24), 6 states have call successors, (24) [2024-11-19 01:15:03,674 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 468 transitions. [2024-11-19 01:15:03,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-19 01:15:03,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:03,675 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:03,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:15:03,875 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,SelfDestructingSolverStorable5 [2024-11-19 01:15:03,876 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:03,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:03,877 INFO L85 PathProgramCache]: Analyzing trace with hash -127855694, now seen corresponding path program 1 times [2024-11-19 01:15:03,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:03,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209026527] [2024-11-19 01:15:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:03,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:05,580 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:05,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:05,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209026527] [2024-11-19 01:15:05,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209026527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:05,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:05,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-19 01:15:05,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139079747] [2024-11-19 01:15:05,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:05,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 01:15:05,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:05,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 01:15:05,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:15:05,585 INFO L87 Difference]: Start difference. First operand 328 states and 468 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:06,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:06,981 INFO L93 Difference]: Finished difference Result 899 states and 1277 transitions. [2024-11-19 01:15:06,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:15:06,982 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2024-11-19 01:15:06,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:06,986 INFO L225 Difference]: With dead ends: 899 [2024-11-19 01:15:06,986 INFO L226 Difference]: Without dead ends: 677 [2024-11-19 01:15:06,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:15:06,988 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 786 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:06,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 767 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 01:15:06,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-19 01:15:07,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 509. [2024-11-19 01:15:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 448 states have (on average 1.3883928571428572) internal successors, (622), 451 states have internal predecessors, (622), 48 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (48), 45 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-19 01:15:07,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 718 transitions. [2024-11-19 01:15:07,040 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 718 transitions. Word has length 109 [2024-11-19 01:15:07,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:07,040 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 718 transitions. [2024-11-19 01:15:07,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:07,041 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 718 transitions. [2024-11-19 01:15:07,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-19 01:15:07,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:07,042 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:07,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:15:07,043 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:07,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:07,044 INFO L85 PathProgramCache]: Analyzing trace with hash -208465257, now seen corresponding path program 1 times [2024-11-19 01:15:07,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:07,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334352573] [2024-11-19 01:15:07,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:07,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:07,283 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:07,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:07,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334352573] [2024-11-19 01:15:07,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334352573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:07,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:07,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:15:07,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983592983] [2024-11-19 01:15:07,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:07,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:15:07,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:07,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:15:07,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:15:07,286 INFO L87 Difference]: Start difference. First operand 509 states and 718 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:07,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:07,697 INFO L93 Difference]: Finished difference Result 935 states and 1323 transitions. [2024-11-19 01:15:07,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:15:07,698 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 110 [2024-11-19 01:15:07,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:07,702 INFO L225 Difference]: With dead ends: 935 [2024-11-19 01:15:07,702 INFO L226 Difference]: Without dead ends: 579 [2024-11-19 01:15:07,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:15:07,704 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 57 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:07,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 656 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 01:15:07,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-19 01:15:07,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 512. [2024-11-19 01:15:07,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 451 states have (on average 1.3835920177383592) internal successors, (624), 454 states have internal predecessors, (624), 48 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (48), 45 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-19 01:15:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 720 transitions. [2024-11-19 01:15:07,749 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 720 transitions. Word has length 110 [2024-11-19 01:15:07,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:07,749 INFO L471 AbstractCegarLoop]: Abstraction has 512 states and 720 transitions. [2024-11-19 01:15:07,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:07,750 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 720 transitions. [2024-11-19 01:15:07,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-19 01:15:07,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:07,751 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:07,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:15:07,751 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:07,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:07,753 INFO L85 PathProgramCache]: Analyzing trace with hash -879318075, now seen corresponding path program 1 times [2024-11-19 01:15:07,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:07,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235069203] [2024-11-19 01:15:07,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:07,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:08,704 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:08,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:08,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235069203] [2024-11-19 01:15:08,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235069203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:08,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:08,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:15:08,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038642079] [2024-11-19 01:15:08,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:08,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:15:08,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:08,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:15:08,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:15:08,706 INFO L87 Difference]: Start difference. First operand 512 states and 720 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 01:15:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:09,203 INFO L93 Difference]: Finished difference Result 1250 states and 1763 transitions. [2024-11-19 01:15:09,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:15:09,204 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2024-11-19 01:15:09,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:09,208 INFO L225 Difference]: With dead ends: 1250 [2024-11-19 01:15:09,208 INFO L226 Difference]: Without dead ends: 741 [2024-11-19 01:15:09,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:15:09,210 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 215 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:09,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 960 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 01:15:09,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-11-19 01:15:09,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 735. [2024-11-19 01:15:09,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 640 states have (on average 1.375) internal successors, (880), 644 states have internal predecessors, (880), 76 states have call successors, (76), 18 states have call predecessors, (76), 18 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-19 01:15:09,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1032 transitions. [2024-11-19 01:15:09,269 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1032 transitions. Word has length 110 [2024-11-19 01:15:09,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:09,269 INFO L471 AbstractCegarLoop]: Abstraction has 735 states and 1032 transitions. [2024-11-19 01:15:09,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 01:15:09,269 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1032 transitions. [2024-11-19 01:15:09,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-19 01:15:09,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:09,271 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:09,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:15:09,271 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:09,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:09,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1067030487, now seen corresponding path program 1 times [2024-11-19 01:15:09,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:09,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557137226] [2024-11-19 01:15:09,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:09,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:10,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:10,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557137226] [2024-11-19 01:15:10,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557137226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:10,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:10,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:15:10,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523704353] [2024-11-19 01:15:10,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:10,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:15:10,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:10,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:15:10,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:15:10,202 INFO L87 Difference]: Start difference. First operand 735 states and 1032 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:10,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:10,852 INFO L93 Difference]: Finished difference Result 1309 states and 1838 transitions. [2024-11-19 01:15:10,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:15:10,853 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2024-11-19 01:15:10,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:10,859 INFO L225 Difference]: With dead ends: 1309 [2024-11-19 01:15:10,860 INFO L226 Difference]: Without dead ends: 796 [2024-11-19 01:15:10,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:15:10,862 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 258 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:10,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 850 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 01:15:10,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2024-11-19 01:15:10,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 739. [2024-11-19 01:15:10,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 644 states have (on average 1.374223602484472) internal successors, (885), 648 states have internal predecessors, (885), 76 states have call successors, (76), 18 states have call predecessors, (76), 18 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-19 01:15:10,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1037 transitions. [2024-11-19 01:15:10,937 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1037 transitions. Word has length 111 [2024-11-19 01:15:10,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:10,937 INFO L471 AbstractCegarLoop]: Abstraction has 739 states and 1037 transitions. [2024-11-19 01:15:10,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:10,938 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1037 transitions. [2024-11-19 01:15:10,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-19 01:15:10,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:10,941 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:10,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 01:15:10,941 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:10,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:10,942 INFO L85 PathProgramCache]: Analyzing trace with hash -393371019, now seen corresponding path program 1 times [2024-11-19 01:15:10,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:10,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925365739] [2024-11-19 01:15:10,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:10,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:12,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:12,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925365739] [2024-11-19 01:15:12,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925365739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:12,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:12,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 01:15:12,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454980014] [2024-11-19 01:15:12,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:12,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:15:12,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:12,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:15:12,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:15:12,265 INFO L87 Difference]: Start difference. First operand 739 states and 1037 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:13,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:13,290 INFO L93 Difference]: Finished difference Result 1577 states and 2226 transitions. [2024-11-19 01:15:13,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:15:13,291 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2024-11-19 01:15:13,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:13,297 INFO L225 Difference]: With dead ends: 1577 [2024-11-19 01:15:13,297 INFO L226 Difference]: Without dead ends: 1062 [2024-11-19 01:15:13,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:15:13,299 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 341 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:13,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 722 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 01:15:13,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2024-11-19 01:15:13,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 761. [2024-11-19 01:15:13,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 666 states have (on average 1.3768768768768769) internal successors, (917), 670 states have internal predecessors, (917), 76 states have call successors, (76), 18 states have call predecessors, (76), 18 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-19 01:15:13,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1069 transitions. [2024-11-19 01:15:13,377 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1069 transitions. Word has length 111 [2024-11-19 01:15:13,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:13,377 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 1069 transitions. [2024-11-19 01:15:13,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:13,378 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1069 transitions. [2024-11-19 01:15:13,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-19 01:15:13,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:13,379 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:13,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 01:15:13,379 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:13,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:13,380 INFO L85 PathProgramCache]: Analyzing trace with hash 565436183, now seen corresponding path program 1 times [2024-11-19 01:15:13,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:13,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675511154] [2024-11-19 01:15:13,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:13,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:14,673 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:14,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:14,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675511154] [2024-11-19 01:15:14,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675511154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:14,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:14,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-19 01:15:14,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178748786] [2024-11-19 01:15:14,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:14,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:15:14,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:14,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:15:14,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:15:14,676 INFO L87 Difference]: Start difference. First operand 761 states and 1069 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:15,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:15,999 INFO L93 Difference]: Finished difference Result 1214 states and 1709 transitions. [2024-11-19 01:15:15,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 01:15:15,999 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 111 [2024-11-19 01:15:16,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:16,004 INFO L225 Difference]: With dead ends: 1214 [2024-11-19 01:15:16,004 INFO L226 Difference]: Without dead ends: 850 [2024-11-19 01:15:16,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:15:16,008 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 314 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:16,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1132 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 01:15:16,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2024-11-19 01:15:16,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 778. [2024-11-19 01:15:16,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 683 states have (on average 1.3718887262079063) internal successors, (937), 687 states have internal predecessors, (937), 76 states have call successors, (76), 18 states have call predecessors, (76), 18 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-19 01:15:16,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1089 transitions. [2024-11-19 01:15:16,087 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1089 transitions. Word has length 111 [2024-11-19 01:15:16,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:16,088 INFO L471 AbstractCegarLoop]: Abstraction has 778 states and 1089 transitions. [2024-11-19 01:15:16,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:16,088 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1089 transitions. [2024-11-19 01:15:16,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-19 01:15:16,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:16,090 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:16,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 01:15:16,090 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:16,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:16,091 INFO L85 PathProgramCache]: Analyzing trace with hash 390825252, now seen corresponding path program 1 times [2024-11-19 01:15:16,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:16,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586018388] [2024-11-19 01:15:16,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:16,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:16,273 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-19 01:15:16,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:16,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586018388] [2024-11-19 01:15:16,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586018388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:15:16,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822252378] [2024-11-19 01:15:16,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:16,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:15:16,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:15:16,276 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:15:16,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:15:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:16,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 01:15:16,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:15:16,538 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:16,539 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:15:16,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822252378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:16,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:15:16,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2024-11-19 01:15:16,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542473262] [2024-11-19 01:15:16,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:16,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:15:16,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:16,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:15:16,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:15:16,541 INFO L87 Difference]: Start difference. First operand 778 states and 1089 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:16,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:16,621 INFO L93 Difference]: Finished difference Result 1560 states and 2188 transitions. [2024-11-19 01:15:16,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:15:16,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 111 [2024-11-19 01:15:16,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:16,626 INFO L225 Difference]: With dead ends: 1560 [2024-11-19 01:15:16,626 INFO L226 Difference]: Without dead ends: 802 [2024-11-19 01:15:16,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:15:16,629 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 0 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:16,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 585 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:15:16,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2024-11-19 01:15:16,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 802. [2024-11-19 01:15:16,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 707 states have (on average 1.3592644978783592) internal successors, (961), 711 states have internal predecessors, (961), 76 states have call successors, (76), 18 states have call predecessors, (76), 18 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-19 01:15:16,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1113 transitions. [2024-11-19 01:15:16,701 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1113 transitions. Word has length 111 [2024-11-19 01:15:16,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:16,701 INFO L471 AbstractCegarLoop]: Abstraction has 802 states and 1113 transitions. [2024-11-19 01:15:16,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:16,702 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1113 transitions. [2024-11-19 01:15:16,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-19 01:15:16,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:16,703 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:16,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:15:16,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:15:16,904 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:16,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:16,904 INFO L85 PathProgramCache]: Analyzing trace with hash -139075208, now seen corresponding path program 1 times [2024-11-19 01:15:16,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:16,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041720564] [2024-11-19 01:15:16,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:16,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:17,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:17,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041720564] [2024-11-19 01:15:17,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041720564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:17,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:17,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:15:17,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163715916] [2024-11-19 01:15:17,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:17,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:15:17,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:17,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:15:17,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:15:17,788 INFO L87 Difference]: Start difference. First operand 802 states and 1113 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 01:15:18,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:18,356 INFO L93 Difference]: Finished difference Result 1599 states and 2225 transitions. [2024-11-19 01:15:18,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:15:18,357 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2024-11-19 01:15:18,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:18,364 INFO L225 Difference]: With dead ends: 1599 [2024-11-19 01:15:18,364 INFO L226 Difference]: Without dead ends: 817 [2024-11-19 01:15:18,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:15:18,367 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 219 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:18,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 845 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 01:15:18,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2024-11-19 01:15:18,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 809. [2024-11-19 01:15:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 714 states have (on average 1.3557422969187676) internal successors, (968), 718 states have internal predecessors, (968), 76 states have call successors, (76), 18 states have call predecessors, (76), 18 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-19 01:15:18,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1120 transitions. [2024-11-19 01:15:18,437 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1120 transitions. Word has length 111 [2024-11-19 01:15:18,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:18,438 INFO L471 AbstractCegarLoop]: Abstraction has 809 states and 1120 transitions. [2024-11-19 01:15:18,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 01:15:18,438 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1120 transitions. [2024-11-19 01:15:18,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-19 01:15:18,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:18,440 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:18,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 01:15:18,440 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:18,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:18,441 INFO L85 PathProgramCache]: Analyzing trace with hash -503496918, now seen corresponding path program 1 times [2024-11-19 01:15:18,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:18,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522335963] [2024-11-19 01:15:18,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:18,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:19,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:19,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522335963] [2024-11-19 01:15:19,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522335963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:19,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:19,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:15:19,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799395934] [2024-11-19 01:15:19,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:19,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:15:19,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:19,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:15:19,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:15:19,431 INFO L87 Difference]: Start difference. First operand 809 states and 1120 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:20,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:20,041 INFO L93 Difference]: Finished difference Result 1623 states and 2254 transitions. [2024-11-19 01:15:20,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:15:20,041 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2024-11-19 01:15:20,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:20,046 INFO L225 Difference]: With dead ends: 1623 [2024-11-19 01:15:20,046 INFO L226 Difference]: Without dead ends: 834 [2024-11-19 01:15:20,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:15:20,050 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 122 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:20,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 682 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 01:15:20,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2024-11-19 01:15:20,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 817. [2024-11-19 01:15:20,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 722 states have (on average 1.350415512465374) internal successors, (975), 726 states have internal predecessors, (975), 76 states have call successors, (76), 18 states have call predecessors, (76), 18 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-19 01:15:20,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1127 transitions. [2024-11-19 01:15:20,123 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1127 transitions. Word has length 112 [2024-11-19 01:15:20,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:20,123 INFO L471 AbstractCegarLoop]: Abstraction has 817 states and 1127 transitions. [2024-11-19 01:15:20,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:20,124 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1127 transitions. [2024-11-19 01:15:20,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-19 01:15:20,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:20,125 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:20,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 01:15:20,126 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:20,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:20,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1090302932, now seen corresponding path program 1 times [2024-11-19 01:15:20,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:20,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167965717] [2024-11-19 01:15:20,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:20,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:20,576 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:20,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:20,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167965717] [2024-11-19 01:15:20,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167965717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:20,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:20,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:15:20,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26151697] [2024-11-19 01:15:20,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:20,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:15:20,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:20,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:15:20,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:15:20,579 INFO L87 Difference]: Start difference. First operand 817 states and 1127 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:21,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:21,305 INFO L93 Difference]: Finished difference Result 1970 states and 2732 transitions. [2024-11-19 01:15:21,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:15:21,306 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2024-11-19 01:15:21,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:21,312 INFO L225 Difference]: With dead ends: 1970 [2024-11-19 01:15:21,312 INFO L226 Difference]: Without dead ends: 1400 [2024-11-19 01:15:21,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:15:21,314 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 584 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:21,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 630 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 01:15:21,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2024-11-19 01:15:21,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 882. [2024-11-19 01:15:21,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 787 states have (on average 1.3621346886912324) internal successors, (1072), 791 states have internal predecessors, (1072), 76 states have call successors, (76), 18 states have call predecessors, (76), 18 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-19 01:15:21,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1224 transitions. [2024-11-19 01:15:21,400 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1224 transitions. Word has length 112 [2024-11-19 01:15:21,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:21,400 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1224 transitions. [2024-11-19 01:15:21,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:21,401 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1224 transitions. [2024-11-19 01:15:21,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-19 01:15:21,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:21,406 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:21,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 01:15:21,406 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:21,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:21,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1746645732, now seen corresponding path program 1 times [2024-11-19 01:15:21,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:21,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433330484] [2024-11-19 01:15:21,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:21,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:22,114 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:22,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:22,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433330484] [2024-11-19 01:15:22,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433330484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:22,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:22,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 01:15:22,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925123537] [2024-11-19 01:15:22,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:22,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:15:22,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:22,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:15:22,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:15:22,117 INFO L87 Difference]: Start difference. First operand 882 states and 1224 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:23,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:23,194 INFO L93 Difference]: Finished difference Result 1616 states and 2242 transitions. [2024-11-19 01:15:23,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 01:15:23,195 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 112 [2024-11-19 01:15:23,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:23,201 INFO L225 Difference]: With dead ends: 1616 [2024-11-19 01:15:23,201 INFO L226 Difference]: Without dead ends: 1388 [2024-11-19 01:15:23,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2024-11-19 01:15:23,203 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 346 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:23,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 1237 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 01:15:23,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2024-11-19 01:15:23,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 886. [2024-11-19 01:15:23,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 791 states have (on average 1.3628318584070795) internal successors, (1078), 795 states have internal predecessors, (1078), 76 states have call successors, (76), 18 states have call predecessors, (76), 18 states have return successors, (76), 72 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-19 01:15:23,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1230 transitions. [2024-11-19 01:15:23,291 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1230 transitions. Word has length 112 [2024-11-19 01:15:23,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:23,292 INFO L471 AbstractCegarLoop]: Abstraction has 886 states and 1230 transitions. [2024-11-19 01:15:23,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:23,292 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1230 transitions. [2024-11-19 01:15:23,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-19 01:15:23,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:23,294 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:23,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 01:15:23,295 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:23,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:23,295 INFO L85 PathProgramCache]: Analyzing trace with hash 653614227, now seen corresponding path program 1 times [2024-11-19 01:15:23,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:23,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156019813] [2024-11-19 01:15:23,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:23,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:24,106 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:24,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:24,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156019813] [2024-11-19 01:15:24,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156019813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:24,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:24,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:15:24,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002914231] [2024-11-19 01:15:24,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:24,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:15:24,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:24,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:15:24,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:15:24,109 INFO L87 Difference]: Start difference. First operand 886 states and 1230 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:24,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:24,644 INFO L93 Difference]: Finished difference Result 1872 states and 2613 transitions. [2024-11-19 01:15:24,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:15:24,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2024-11-19 01:15:24,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:24,650 INFO L225 Difference]: With dead ends: 1872 [2024-11-19 01:15:24,651 INFO L226 Difference]: Without dead ends: 1006 [2024-11-19 01:15:24,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:15:24,653 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 194 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:24,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 478 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 01:15:24,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2024-11-19 01:15:24,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 998. [2024-11-19 01:15:24,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 889 states have (on average 1.3655793025871765) internal successors, (1214), 893 states have internal predecessors, (1214), 88 states have call successors, (88), 20 states have call predecessors, (88), 20 states have return successors, (88), 84 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-19 01:15:24,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1390 transitions. [2024-11-19 01:15:24,738 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1390 transitions. Word has length 113 [2024-11-19 01:15:24,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:24,738 INFO L471 AbstractCegarLoop]: Abstraction has 998 states and 1390 transitions. [2024-11-19 01:15:24,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:24,739 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1390 transitions. [2024-11-19 01:15:24,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-19 01:15:24,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:24,740 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:24,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 01:15:24,741 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:24,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:24,741 INFO L85 PathProgramCache]: Analyzing trace with hash 49930470, now seen corresponding path program 1 times [2024-11-19 01:15:24,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:24,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800105500] [2024-11-19 01:15:24,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:24,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:25,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:25,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800105500] [2024-11-19 01:15:25,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800105500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:25,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:25,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 01:15:25,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901466505] [2024-11-19 01:15:25,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:25,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:15:25,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:25,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:15:25,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:15:25,772 INFO L87 Difference]: Start difference. First operand 998 states and 1390 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:26,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:26,314 INFO L93 Difference]: Finished difference Result 1645 states and 2290 transitions. [2024-11-19 01:15:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:15:26,314 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2024-11-19 01:15:26,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:26,321 INFO L225 Difference]: With dead ends: 1645 [2024-11-19 01:15:26,321 INFO L226 Difference]: Without dead ends: 1014 [2024-11-19 01:15:26,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:15:26,324 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 206 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:26,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 753 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 01:15:26,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2024-11-19 01:15:26,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 1006. [2024-11-19 01:15:26,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 897 states have (on average 1.3623188405797102) internal successors, (1222), 901 states have internal predecessors, (1222), 88 states have call successors, (88), 20 states have call predecessors, (88), 20 states have return successors, (88), 84 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-19 01:15:26,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1398 transitions. [2024-11-19 01:15:26,418 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1398 transitions. Word has length 113 [2024-11-19 01:15:26,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:26,418 INFO L471 AbstractCegarLoop]: Abstraction has 1006 states and 1398 transitions. [2024-11-19 01:15:26,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:26,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1398 transitions. [2024-11-19 01:15:26,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-19 01:15:26,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:26,421 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:26,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 01:15:26,421 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:26,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:26,422 INFO L85 PathProgramCache]: Analyzing trace with hash -173705668, now seen corresponding path program 1 times [2024-11-19 01:15:26,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:26,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711769657] [2024-11-19 01:15:26,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:26,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:28,002 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:28,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:28,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711769657] [2024-11-19 01:15:28,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711769657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:28,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:28,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 01:15:28,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247499992] [2024-11-19 01:15:28,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:28,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:15:28,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:28,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:15:28,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:15:28,005 INFO L87 Difference]: Start difference. First operand 1006 states and 1398 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:29,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:29,215 INFO L93 Difference]: Finished difference Result 1719 states and 2382 transitions. [2024-11-19 01:15:29,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 01:15:29,216 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2024-11-19 01:15:29,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:29,222 INFO L225 Difference]: With dead ends: 1719 [2024-11-19 01:15:29,222 INFO L226 Difference]: Without dead ends: 1080 [2024-11-19 01:15:29,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:15:29,226 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 714 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:29,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 1104 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 01:15:29,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2024-11-19 01:15:29,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 985. [2024-11-19 01:15:29,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 876 states have (on average 1.3595890410958904) internal successors, (1191), 880 states have internal predecessors, (1191), 88 states have call successors, (88), 20 states have call predecessors, (88), 20 states have return successors, (88), 84 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-19 01:15:29,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1367 transitions. [2024-11-19 01:15:29,323 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1367 transitions. Word has length 113 [2024-11-19 01:15:29,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:29,323 INFO L471 AbstractCegarLoop]: Abstraction has 985 states and 1367 transitions. [2024-11-19 01:15:29,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:29,324 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1367 transitions. [2024-11-19 01:15:29,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-19 01:15:29,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:29,325 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:29,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 01:15:29,326 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:29,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:29,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1093688689, now seen corresponding path program 1 times [2024-11-19 01:15:29,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:29,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793541648] [2024-11-19 01:15:29,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:29,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-19 01:15:29,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:29,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793541648] [2024-11-19 01:15:29,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793541648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:15:29,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303282008] [2024-11-19 01:15:29,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:29,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:15:29,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:15:29,506 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:15:29,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:15:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:29,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 01:15:29,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:15:29,831 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:29,832 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:15:29,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303282008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:29,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:15:29,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-19 01:15:29,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491369539] [2024-11-19 01:15:29,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:29,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:15:29,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:29,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:15:29,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:15:29,834 INFO L87 Difference]: Start difference. First operand 985 states and 1367 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:29,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:29,924 INFO L93 Difference]: Finished difference Result 1977 states and 2748 transitions. [2024-11-19 01:15:29,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:15:29,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2024-11-19 01:15:29,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:29,930 INFO L225 Difference]: With dead ends: 1977 [2024-11-19 01:15:29,930 INFO L226 Difference]: Without dead ends: 1012 [2024-11-19 01:15:29,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:15:29,933 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 0 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:29,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 584 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:15:29,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2024-11-19 01:15:30,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1012. [2024-11-19 01:15:30,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 903 states have (on average 1.3488372093023255) internal successors, (1218), 907 states have internal predecessors, (1218), 88 states have call successors, (88), 20 states have call predecessors, (88), 20 states have return successors, (88), 84 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-19 01:15:30,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1394 transitions. [2024-11-19 01:15:30,018 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1394 transitions. Word has length 113 [2024-11-19 01:15:30,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:30,018 INFO L471 AbstractCegarLoop]: Abstraction has 1012 states and 1394 transitions. [2024-11-19 01:15:30,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:30,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1394 transitions. [2024-11-19 01:15:30,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-19 01:15:30,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:30,020 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:30,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 01:15:30,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:15:30,222 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:30,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:30,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1632418423, now seen corresponding path program 1 times [2024-11-19 01:15:30,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:30,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640350869] [2024-11-19 01:15:30,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:30,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:31,293 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:31,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:31,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640350869] [2024-11-19 01:15:31,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640350869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:31,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:31,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:15:31,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594114770] [2024-11-19 01:15:31,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:31,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:15:31,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:31,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:15:31,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:15:31,295 INFO L87 Difference]: Start difference. First operand 1012 states and 1394 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:32,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:32,189 INFO L93 Difference]: Finished difference Result 1290 states and 1775 transitions. [2024-11-19 01:15:32,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 01:15:32,190 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2024-11-19 01:15:32,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:32,195 INFO L225 Difference]: With dead ends: 1290 [2024-11-19 01:15:32,195 INFO L226 Difference]: Without dead ends: 1052 [2024-11-19 01:15:32,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:15:32,197 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 311 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:32,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 867 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 01:15:32,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2024-11-19 01:15:32,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1015. [2024-11-19 01:15:32,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 906 states have (on average 1.3476821192052981) internal successors, (1221), 910 states have internal predecessors, (1221), 88 states have call successors, (88), 20 states have call predecessors, (88), 20 states have return successors, (88), 84 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-19 01:15:32,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1397 transitions. [2024-11-19 01:15:32,285 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1397 transitions. Word has length 113 [2024-11-19 01:15:32,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:32,285 INFO L471 AbstractCegarLoop]: Abstraction has 1015 states and 1397 transitions. [2024-11-19 01:15:32,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:32,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1397 transitions. [2024-11-19 01:15:32,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-19 01:15:32,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:32,289 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:32,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 01:15:32,289 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:32,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:32,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1709577915, now seen corresponding path program 1 times [2024-11-19 01:15:32,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:32,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307484519] [2024-11-19 01:15:32,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:32,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:33,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:33,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307484519] [2024-11-19 01:15:33,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307484519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:33,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:33,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:15:33,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885883216] [2024-11-19 01:15:33,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:33,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:15:33,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:33,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:15:33,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:15:33,301 INFO L87 Difference]: Start difference. First operand 1015 states and 1397 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 01:15:33,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:33,682 INFO L93 Difference]: Finished difference Result 1507 states and 2088 transitions. [2024-11-19 01:15:33,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:15:33,682 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 113 [2024-11-19 01:15:33,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:33,687 INFO L225 Difference]: With dead ends: 1507 [2024-11-19 01:15:33,687 INFO L226 Difference]: Without dead ends: 1140 [2024-11-19 01:15:33,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:15:33,688 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 205 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:33,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 730 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 01:15:33,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2024-11-19 01:15:33,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1138. [2024-11-19 01:15:33,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1015 states have (on average 1.3507389162561576) internal successors, (1371), 1019 states have internal predecessors, (1371), 100 states have call successors, (100), 22 states have call predecessors, (100), 22 states have return successors, (100), 96 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-19 01:15:33,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1571 transitions. [2024-11-19 01:15:33,772 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1571 transitions. Word has length 113 [2024-11-19 01:15:33,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:33,772 INFO L471 AbstractCegarLoop]: Abstraction has 1138 states and 1571 transitions. [2024-11-19 01:15:33,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 01:15:33,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1571 transitions. [2024-11-19 01:15:33,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-19 01:15:33,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:33,774 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:33,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 01:15:33,775 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:33,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:33,775 INFO L85 PathProgramCache]: Analyzing trace with hash -949509134, now seen corresponding path program 1 times [2024-11-19 01:15:33,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:33,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242790599] [2024-11-19 01:15:33,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:33,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:34,238 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:34,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:34,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242790599] [2024-11-19 01:15:34,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242790599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:34,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:34,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:15:34,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198594621] [2024-11-19 01:15:34,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:34,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:15:34,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:34,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:15:34,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:15:34,241 INFO L87 Difference]: Start difference. First operand 1138 states and 1571 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:34,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:34,637 INFO L93 Difference]: Finished difference Result 1882 states and 2600 transitions. [2024-11-19 01:15:34,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:15:34,638 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2024-11-19 01:15:34,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:34,644 INFO L225 Difference]: With dead ends: 1882 [2024-11-19 01:15:34,644 INFO L226 Difference]: Without dead ends: 1392 [2024-11-19 01:15:34,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:15:34,646 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 252 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:34,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 672 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 01:15:34,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2024-11-19 01:15:34,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1146. [2024-11-19 01:15:34,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1023 states have (on average 1.3470185728250244) internal successors, (1378), 1027 states have internal predecessors, (1378), 100 states have call successors, (100), 22 states have call predecessors, (100), 22 states have return successors, (100), 96 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-19 01:15:34,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1578 transitions. [2024-11-19 01:15:34,749 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1578 transitions. Word has length 113 [2024-11-19 01:15:34,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:34,750 INFO L471 AbstractCegarLoop]: Abstraction has 1146 states and 1578 transitions. [2024-11-19 01:15:34,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:34,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1578 transitions. [2024-11-19 01:15:34,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-19 01:15:34,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:34,752 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:34,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 01:15:34,753 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:34,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:34,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1069576467, now seen corresponding path program 1 times [2024-11-19 01:15:34,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:34,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432471013] [2024-11-19 01:15:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:34,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:36,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:36,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432471013] [2024-11-19 01:15:36,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432471013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:36,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:36,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 01:15:36,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3709313] [2024-11-19 01:15:36,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:36,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:15:36,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:15:36,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:15:36,050 INFO L87 Difference]: Start difference. First operand 1146 states and 1578 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:37,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:37,002 INFO L93 Difference]: Finished difference Result 2199 states and 3013 transitions. [2024-11-19 01:15:37,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:15:37,002 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2024-11-19 01:15:37,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:37,009 INFO L225 Difference]: With dead ends: 2199 [2024-11-19 01:15:37,009 INFO L226 Difference]: Without dead ends: 1553 [2024-11-19 01:15:37,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:15:37,015 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 376 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:37,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 1165 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 01:15:37,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2024-11-19 01:15:37,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1169. [2024-11-19 01:15:37,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 1046 states have (on average 1.347036328871893) internal successors, (1409), 1050 states have internal predecessors, (1409), 100 states have call successors, (100), 22 states have call predecessors, (100), 22 states have return successors, (100), 96 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-19 01:15:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1609 transitions. [2024-11-19 01:15:37,116 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1609 transitions. Word has length 114 [2024-11-19 01:15:37,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:37,116 INFO L471 AbstractCegarLoop]: Abstraction has 1169 states and 1609 transitions. [2024-11-19 01:15:37,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:37,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1609 transitions. [2024-11-19 01:15:37,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-19 01:15:37,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:37,119 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:37,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 01:15:37,120 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:37,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:37,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1945527151, now seen corresponding path program 1 times [2024-11-19 01:15:37,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:37,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394096949] [2024-11-19 01:15:37,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:37,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:38,147 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:38,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:38,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394096949] [2024-11-19 01:15:38,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394096949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:38,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:38,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:15:38,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120921948] [2024-11-19 01:15:38,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:38,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:15:38,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:38,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:15:38,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:15:38,149 INFO L87 Difference]: Start difference. First operand 1169 states and 1609 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:38,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:38,973 INFO L93 Difference]: Finished difference Result 1954 states and 2679 transitions. [2024-11-19 01:15:38,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:15:38,974 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2024-11-19 01:15:38,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:38,979 INFO L225 Difference]: With dead ends: 1954 [2024-11-19 01:15:38,979 INFO L226 Difference]: Without dead ends: 1284 [2024-11-19 01:15:38,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:15:38,981 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 355 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:38,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 829 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 01:15:38,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2024-11-19 01:15:39,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1150. [2024-11-19 01:15:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1027 states have (on average 1.3456669912366115) internal successors, (1382), 1031 states have internal predecessors, (1382), 100 states have call successors, (100), 22 states have call predecessors, (100), 22 states have return successors, (100), 96 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-19 01:15:39,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1582 transitions. [2024-11-19 01:15:39,087 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1582 transitions. Word has length 114 [2024-11-19 01:15:39,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:39,087 INFO L471 AbstractCegarLoop]: Abstraction has 1150 states and 1582 transitions. [2024-11-19 01:15:39,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:39,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1582 transitions. [2024-11-19 01:15:39,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-19 01:15:39,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:39,090 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:39,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 01:15:39,090 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:39,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:39,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1363693079, now seen corresponding path program 1 times [2024-11-19 01:15:39,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:39,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835238670] [2024-11-19 01:15:39,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:39,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:39,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:39,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835238670] [2024-11-19 01:15:39,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835238670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:39,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:39,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 01:15:39,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622740819] [2024-11-19 01:15:39,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:39,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:15:39,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:39,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:15:39,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:15:39,945 INFO L87 Difference]: Start difference. First operand 1150 states and 1582 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:40,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:40,731 INFO L93 Difference]: Finished difference Result 2135 states and 2918 transitions. [2024-11-19 01:15:40,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:15:40,731 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 114 [2024-11-19 01:15:40,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:40,737 INFO L225 Difference]: With dead ends: 2135 [2024-11-19 01:15:40,737 INFO L226 Difference]: Without dead ends: 1657 [2024-11-19 01:15:40,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2024-11-19 01:15:40,738 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 478 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:40,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 812 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 01:15:40,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2024-11-19 01:15:40,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1155. [2024-11-19 01:15:40,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1032 states have (on average 1.3420542635658914) internal successors, (1385), 1036 states have internal predecessors, (1385), 100 states have call successors, (100), 22 states have call predecessors, (100), 22 states have return successors, (100), 96 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-19 01:15:40,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1585 transitions. [2024-11-19 01:15:40,832 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1585 transitions. Word has length 114 [2024-11-19 01:15:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:40,833 INFO L471 AbstractCegarLoop]: Abstraction has 1155 states and 1585 transitions. [2024-11-19 01:15:40,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:40,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1585 transitions. [2024-11-19 01:15:40,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-19 01:15:40,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:40,835 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:40,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-19 01:15:40,835 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:40,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:40,835 INFO L85 PathProgramCache]: Analyzing trace with hash -273087997, now seen corresponding path program 1 times [2024-11-19 01:15:40,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:40,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363352127] [2024-11-19 01:15:40,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:40,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:41,239 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:41,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:41,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363352127] [2024-11-19 01:15:41,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363352127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:41,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:41,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 01:15:41,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710551636] [2024-11-19 01:15:41,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:41,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:15:41,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:41,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:15:41,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:15:41,243 INFO L87 Difference]: Start difference. First operand 1155 states and 1585 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)