./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-12.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 05acb47e03e235712ff531dc9c262bde9a4e8849999fe7c0ae66487e3d96b2b6 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:03:37,226 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:03:37,293 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:03:37,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:03:37,298 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:03:37,328 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:03:37,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:03:37,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:03:37,330 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:03:37,331 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:03:37,331 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:03:37,331 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:03:37,332 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:03:37,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:03:37,332 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:03:37,332 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:03:37,333 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:03:37,333 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:03:37,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:03:37,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:03:37,334 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:03:37,338 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:03:37,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:03:37,338 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:03:37,338 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:03:37,338 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:03:37,338 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:03:37,338 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:03:37,339 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:03:37,339 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:03:37,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:03:37,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:03:37,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:03:37,340 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:03:37,340 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:03:37,340 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:03:37,340 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:03:37,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:03:37,340 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:03:37,340 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:03:37,340 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:03:37,346 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:03:37,346 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05acb47e03e235712ff531dc9c262bde9a4e8849999fe7c0ae66487e3d96b2b6 [2024-10-14 14:03:37,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:03:37,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:03:37,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:03:37,598 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:03:37,598 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:03:37,599 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-12.i [2024-10-14 14:03:38,866 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:03:39,078 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:03:39,078 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-12.i [2024-10-14 14:03:39,088 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a1ae760c/c32760fcf80e430484052b7a861fa311/FLAGbce98030a [2024-10-14 14:03:39,441 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a1ae760c/c32760fcf80e430484052b7a861fa311 [2024-10-14 14:03:39,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:03:39,444 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:03:39,445 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:03:39,445 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:03:39,450 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:03:39,450 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:03:39" (1/1) ... [2024-10-14 14:03:39,451 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a54cbb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:03:39, skipping insertion in model container [2024-10-14 14:03:39,451 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:03:39" (1/1) ... [2024-10-14 14:03:39,471 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:03:39,593 WARN L248 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-12.i[917,930] [2024-10-14 14:03:39,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:03:39,646 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:03:39,655 WARN L248 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-12.i[917,930] [2024-10-14 14:03:39,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:03:39,715 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:03:39,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:03:39 WrapperNode [2024-10-14 14:03:39,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:03:39,717 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:03:39,717 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:03:39,717 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:03:39,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:03:39" (1/1) ... [2024-10-14 14:03:39,736 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:03:39" (1/1) ... [2024-10-14 14:03:39,777 INFO L138 Inliner]: procedures = 26, calls = 151, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 454 [2024-10-14 14:03:39,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:03:39,778 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:03:39,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:03:39,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:03:39,790 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:03:39" (1/1) ... [2024-10-14 14:03:39,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:03:39" (1/1) ... [2024-10-14 14:03:39,798 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:03:39" (1/1) ... [2024-10-14 14:03:39,813 INFO L175 MemorySlicer]: Split 123 memory accesses to 2 slices as follows [2, 121]. 98 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 11]. The 14 writes are split as follows [0, 14]. [2024-10-14 14:03:39,813 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:03:39" (1/1) ... [2024-10-14 14:03:39,814 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:03:39" (1/1) ... [2024-10-14 14:03:39,827 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:03:39" (1/1) ... [2024-10-14 14:03:39,830 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:03:39" (1/1) ... [2024-10-14 14:03:39,832 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:03:39" (1/1) ... [2024-10-14 14:03:39,833 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:03:39" (1/1) ... [2024-10-14 14:03:39,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:03:39,837 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:03:39,837 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:03:39,837 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:03:39,838 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:03:39" (1/1) ... [2024-10-14 14:03:39,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:03:39,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:03:39,868 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) [2024-10-14 14:03:39,870 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 [2024-10-14 14:03:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:03:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 14:03:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 14:03:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 14:03:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 14:03:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-14 14:03:39,918 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-14 14:03:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:03:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 14:03:39,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:03:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:03:40,047 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:03:40,049 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:03:40,482 INFO L? ?]: Removed 131 outVars from TransFormulas that were not future-live. [2024-10-14 14:03:40,482 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:03:40,521 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:03:40,521 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 14:03:40,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:03:40 BoogieIcfgContainer [2024-10-14 14:03:40,522 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:03:40,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:03:40,525 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:03:40,528 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:03:40,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:03:39" (1/3) ... [2024-10-14 14:03:40,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187f6247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:03:40, skipping insertion in model container [2024-10-14 14:03:40,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:03:39" (2/3) ... [2024-10-14 14:03:40,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187f6247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:03:40, skipping insertion in model container [2024-10-14 14:03:40,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:03:40" (3/3) ... [2024-10-14 14:03:40,532 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-12.i [2024-10-14 14:03:40,545 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:03:40,545 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:03:40,590 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:03:40,596 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;@320abfcd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:03:40,596 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 14:03:40,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 73 states have internal predecessors, (103), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 14:03:40,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-14 14:03:40,607 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:03:40,608 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:03:40,609 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:03:40,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:03:40,613 INFO L85 PathProgramCache]: Analyzing trace with hash 652113502, now seen corresponding path program 1 times [2024-10-14 14:03:40,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:03:40,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105963861] [2024-10-14 14:03:40,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:03:40,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:03:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:40,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:03:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:40,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:03:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:40,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:03:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:40,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:03:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:40,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:03:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:40,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:03:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:40,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:03:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:40,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:03:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:40,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:03:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:40,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:03:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:40,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:03:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:40,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:03:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:40,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:03:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:40,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 14:03:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:40,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 14:03:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:40,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 14:03:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 14:03:40,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:03:40,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105963861] [2024-10-14 14:03:40,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105963861] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:03:40,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:03:40,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 14:03:40,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801239742] [2024-10-14 14:03:40,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:03:40,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 14:03:40,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:03:40,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 14:03:40,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 14:03:40,885 INFO L87 Difference]: Start difference. First operand has 91 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 73 states have internal predecessors, (103), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-14 14:03:40,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:03:40,922 INFO L93 Difference]: Finished difference Result 173 states and 274 transitions. [2024-10-14 14:03:40,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 14:03:40,924 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2024-10-14 14:03:40,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:03:40,931 INFO L225 Difference]: With dead ends: 173 [2024-10-14 14:03:40,931 INFO L226 Difference]: Without dead ends: 83 [2024-10-14 14:03:40,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 14:03:40,936 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 14:03:40,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 14:03:40,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-14 14:03:40,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-10-14 14:03:40,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 14:03:40,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 118 transitions. [2024-10-14 14:03:40,968 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 118 transitions. Word has length 112 [2024-10-14 14:03:40,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:03:40,969 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 118 transitions. [2024-10-14 14:03:40,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-14 14:03:40,969 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 118 transitions. [2024-10-14 14:03:40,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-14 14:03:40,972 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:03:40,972 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:03:40,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:03:40,973 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:03:40,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:03:40,973 INFO L85 PathProgramCache]: Analyzing trace with hash 997633598, now seen corresponding path program 1 times [2024-10-14 14:03:40,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:03:40,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882325355] [2024-10-14 14:03:40,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:03:40,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:03:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:03:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:03:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:03:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:03:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:03:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:03:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:03:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:03:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:03:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:03:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:03:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:03:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:03:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 14:03:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 14:03:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 14:03:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,307 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 14:03:41,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:03:41,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882325355] [2024-10-14 14:03:41,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882325355] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:03:41,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:03:41,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:03:41,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918430724] [2024-10-14 14:03:41,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:03:41,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:03:41,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:03:41,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:03:41,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:03:41,317 INFO L87 Difference]: Start difference. First operand 83 states and 118 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 14:03:41,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:03:41,357 INFO L93 Difference]: Finished difference Result 165 states and 235 transitions. [2024-10-14 14:03:41,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:03:41,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 112 [2024-10-14 14:03:41,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:03:41,361 INFO L225 Difference]: With dead ends: 165 [2024-10-14 14:03:41,361 INFO L226 Difference]: Without dead ends: 83 [2024-10-14 14:03:41,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:03:41,363 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 14:03:41,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 328 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 14:03:41,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-14 14:03:41,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-10-14 14:03:41,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 65 states have internal predecessors, (85), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 14:03:41,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2024-10-14 14:03:41,371 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 112 [2024-10-14 14:03:41,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:03:41,372 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2024-10-14 14:03:41,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 14:03:41,372 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2024-10-14 14:03:41,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-14 14:03:41,374 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:03:41,374 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:03:41,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:03:41,375 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:03:41,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:03:41,375 INFO L85 PathProgramCache]: Analyzing trace with hash 452454848, now seen corresponding path program 1 times [2024-10-14 14:03:41,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:03:41,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16505168] [2024-10-14 14:03:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:03:41,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:03:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:03:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:03:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:03:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:03:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:03:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:03:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:03:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:03:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:03:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:03:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:03:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:03:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:03:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 14:03:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 14:03:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 14:03:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:41,637 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 14:03:41,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:03:41,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16505168] [2024-10-14 14:03:41,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16505168] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:03:41,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:03:41,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:03:41,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549286676] [2024-10-14 14:03:41,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:03:41,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:03:41,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:03:41,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:03:41,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:03:41,643 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 14:03:41,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:03:41,689 INFO L93 Difference]: Finished difference Result 168 states and 237 transitions. [2024-10-14 14:03:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:03:41,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 114 [2024-10-14 14:03:41,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:03:41,691 INFO L225 Difference]: With dead ends: 168 [2024-10-14 14:03:41,691 INFO L226 Difference]: Without dead ends: 86 [2024-10-14 14:03:41,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:03:41,692 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 0 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 14:03:41,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 431 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 14:03:41,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-10-14 14:03:41,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-10-14 14:03:41,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 68 states have internal predecessors, (88), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 14:03:41,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2024-10-14 14:03:41,700 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 114 [2024-10-14 14:03:41,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:03:41,700 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 120 transitions. [2024-10-14 14:03:41,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 14:03:41,701 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions. [2024-10-14 14:03:41,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-10-14 14:03:41,702 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:03:41,702 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:03:41,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 14:03:41,702 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:03:41,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:03:41,703 INFO L85 PathProgramCache]: Analyzing trace with hash 95530204, now seen corresponding path program 1 times [2024-10-14 14:03:41,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:03:41,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111478096] [2024-10-14 14:03:41,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:03:41,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:03:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:42,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:03:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:42,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:03:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:42,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:03:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:42,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:03:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:42,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:03:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:42,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:03:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:42,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:03:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:42,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:03:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:42,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:03:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:42,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:03:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:42,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:03:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:42,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:03:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:42,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:03:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:42,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 14:03:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:42,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 14:03:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:42,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 14:03:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 14:03:42,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:03:42,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111478096] [2024-10-14 14:03:42,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111478096] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:03:42,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:03:42,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 14:03:42,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776647669] [2024-10-14 14:03:42,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:03:42,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 14:03:42,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:03:42,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 14:03:42,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 14:03:42,440 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 14:03:42,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:03:42,736 INFO L93 Difference]: Finished difference Result 125 states and 169 transitions. [2024-10-14 14:03:42,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 14:03:42,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 116 [2024-10-14 14:03:42,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:03:42,740 INFO L225 Difference]: With dead ends: 125 [2024-10-14 14:03:42,740 INFO L226 Difference]: Without dead ends: 123 [2024-10-14 14:03:42,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-14 14:03:42,745 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 152 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 14:03:42,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 383 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 14:03:42,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-10-14 14:03:42,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 110. [2024-10-14 14:03:42,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 92 states have (on average 1.2934782608695652) internal successors, (119), 92 states have internal predecessors, (119), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 14:03:42,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 151 transitions. [2024-10-14 14:03:42,761 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 151 transitions. Word has length 116 [2024-10-14 14:03:42,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:03:42,762 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 151 transitions. [2024-10-14 14:03:42,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 14:03:42,765 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 151 transitions. [2024-10-14 14:03:42,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-10-14 14:03:42,766 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:03:42,766 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:03:42,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 14:03:42,767 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:03:42,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:03:42,767 INFO L85 PathProgramCache]: Analyzing trace with hash 7554285, now seen corresponding path program 1 times [2024-10-14 14:03:42,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:03:42,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071302017] [2024-10-14 14:03:42,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:03:42,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:03:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:44,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:03:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:44,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:03:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:44,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:03:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:44,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:03:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:44,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:03:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:44,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:03:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:44,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:03:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:44,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:03:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:44,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:03:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:44,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:03:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:44,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:03:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:44,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:03:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:44,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:03:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:44,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 14:03:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:44,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 14:03:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:44,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 14:03:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:44,895 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 108 proven. 36 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-10-14 14:03:44,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:03:44,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071302017] [2024-10-14 14:03:44,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071302017] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:03:44,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674241184] [2024-10-14 14:03:44,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:03:44,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:03:44,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:03:44,901 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) [2024-10-14 14:03:44,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 14:03:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:03:45,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-10-14 14:03:45,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:03:45,784 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 [2024-10-14 14:03:46,340 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 25 treesize of output 13 [2024-10-14 14:03:46,577 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 25 treesize of output 13 [2024-10-14 14:03:46,786 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 25 treesize of output 13 [2024-10-14 14:03:47,055 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 25 treesize of output 13 [2024-10-14 14:03:47,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:03:47,910 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-14 14:03:47,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2024-10-14 14:03:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 252 proven. 96 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-10-14 14:03:48,280 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:04:01,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674241184] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:04:01,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 14:04:01,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25] total 40 [2024-10-14 14:04:01,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196617792] [2024-10-14 14:04:01,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 14:04:01,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-14 14:04:01,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:01,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-14 14:04:01,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=2467, Unknown=1, NotChecked=0, Total=2756 [2024-10-14 14:04:01,646 INFO L87 Difference]: Start difference. First operand 110 states and 151 transitions. Second operand has 40 states, 32 states have (on average 3.03125) internal successors, (97), 35 states have internal predecessors, (97), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) [2024-10-14 14:04:06,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:06,736 INFO L93 Difference]: Finished difference Result 228 states and 295 transitions. [2024-10-14 14:04:06,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-14 14:04:06,737 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 32 states have (on average 3.03125) internal successors, (97), 35 states have internal predecessors, (97), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) Word has length 117 [2024-10-14 14:04:06,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:06,741 INFO L225 Difference]: With dead ends: 228 [2024-10-14 14:04:06,741 INFO L226 Difference]: Without dead ends: 226 [2024-10-14 14:04:06,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1338 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=875, Invalid=4824, Unknown=1, NotChecked=0, Total=5700 [2024-10-14 14:04:06,743 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 592 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:06,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 1022 Invalid, 2548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-10-14 14:04:06,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-10-14 14:04:06,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 175. [2024-10-14 14:04:06,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 147 states have (on average 1.272108843537415) internal successors, (187), 148 states have internal predecessors, (187), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-14 14:04:06,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 231 transitions. [2024-10-14 14:04:06,771 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 231 transitions. Word has length 117 [2024-10-14 14:04:06,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:06,771 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 231 transitions. [2024-10-14 14:04:06,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 32 states have (on average 3.03125) internal successors, (97), 35 states have internal predecessors, (97), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) [2024-10-14 14:04:06,772 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 231 transitions. [2024-10-14 14:04:06,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-14 14:04:06,773 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:06,773 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:06,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 14:04:06,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:04:06,974 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:06,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:06,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1859131897, now seen corresponding path program 1 times [2024-10-14 14:04:06,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:06,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084197562] [2024-10-14 14:04:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:06,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:04:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:04:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:04:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:04:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:04:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:04:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:04:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:04:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:04:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:04:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:04:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:04:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:04:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 14:04:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 14:04:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 14:04:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 108 proven. 36 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-10-14 14:04:08,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:08,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084197562] [2024-10-14 14:04:08,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084197562] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:04:08,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656215595] [2024-10-14 14:04:08,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:08,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:04:08,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:04:08,903 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) [2024-10-14 14:04:08,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 14:04:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:09,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-10-14 14:04:09,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:04:09,973 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 [2024-10-14 14:04:10,857 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 25 treesize of output 13 [2024-10-14 14:04:11,214 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 25 treesize of output 13 [2024-10-14 14:04:11,555 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 25 treesize of output 13 [2024-10-14 14:04:11,950 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 25 treesize of output 13 [2024-10-14 14:04:13,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:04:13,516 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-14 14:04:13,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2024-10-14 14:04:14,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:04:14,116 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-14 14:04:14,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 34 [2024-10-14 14:04:14,333 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 252 proven. 96 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-10-14 14:04:14,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:04:27,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656215595] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:04:27,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 14:04:27,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26] total 42 [2024-10-14 14:04:27,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470845111] [2024-10-14 14:04:27,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 14:04:27,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-14 14:04:27,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:27,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-14 14:04:27,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=2677, Unknown=0, NotChecked=0, Total=2970 [2024-10-14 14:04:27,237 INFO L87 Difference]: Start difference. First operand 175 states and 231 transitions. Second operand has 42 states, 34 states have (on average 2.911764705882353) internal successors, (99), 37 states have internal predecessors, (99), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) [2024-10-14 14:04:34,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:34,126 INFO L93 Difference]: Finished difference Result 324 states and 417 transitions. [2024-10-14 14:04:34,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-14 14:04:34,127 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 34 states have (on average 2.911764705882353) internal successors, (99), 37 states have internal predecessors, (99), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) Word has length 118 [2024-10-14 14:04:34,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:34,129 INFO L225 Difference]: With dead ends: 324 [2024-10-14 14:04:34,129 INFO L226 Difference]: Without dead ends: 322 [2024-10-14 14:04:34,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1657 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=1188, Invalid=6122, Unknown=0, NotChecked=0, Total=7310 [2024-10-14 14:04:34,134 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 611 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 2850 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 2972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:34,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 927 Invalid, 2972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2850 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-10-14 14:04:34,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-10-14 14:04:34,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 202. [2024-10-14 14:04:34,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 174 states have (on average 1.2873563218390804) internal successors, (224), 175 states have internal predecessors, (224), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-14 14:04:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 268 transitions. [2024-10-14 14:04:34,160 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 268 transitions. Word has length 118 [2024-10-14 14:04:34,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:34,160 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 268 transitions. [2024-10-14 14:04:34,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 34 states have (on average 2.911764705882353) internal successors, (99), 37 states have internal predecessors, (99), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) [2024-10-14 14:04:34,161 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 268 transitions. [2024-10-14 14:04:34,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-10-14 14:04:34,161 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:34,162 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:34,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 14:04:34,362 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 [2024-10-14 14:04:34,363 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:34,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:34,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1558242770, now seen corresponding path program 1 times [2024-10-14 14:04:34,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:34,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219205737] [2024-10-14 14:04:34,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:34,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:35,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:04:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:35,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:04:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:35,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:04:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:35,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:04:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:35,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:04:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:35,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:04:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:35,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:04:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:35,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:04:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:35,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:04:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:35,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:04:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:35,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:04:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:35,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:04:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:35,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:04:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:35,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 14:04:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:35,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 14:04:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:35,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 14:04:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:35,440 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-10-14 14:04:35,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:35,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219205737] [2024-10-14 14:04:35,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219205737] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:04:35,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823658800] [2024-10-14 14:04:35,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:35,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:04:35,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:04:35,445 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) [2024-10-14 14:04:35,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 14:04:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:35,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-14 14:04:35,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:04:35,819 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 [2024-10-14 14:04:36,036 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 25 treesize of output 13 [2024-10-14 14:04:36,200 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 25 treesize of output 13 [2024-10-14 14:04:36,383 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 25 treesize of output 13 [2024-10-14 14:04:36,613 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 25 treesize of output 13 [2024-10-14 14:04:36,787 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 25 treesize of output 13 [2024-10-14 14:04:36,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2024-10-14 14:04:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 183 proven. 136 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-10-14 14:04:36,955 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:04:37,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823658800] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:04:37,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 14:04:37,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2024-10-14 14:04:37,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344252653] [2024-10-14 14:04:37,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 14:04:37,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 14:04:37,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:37,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 14:04:37,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-10-14 14:04:37,108 INFO L87 Difference]: Start difference. First operand 202 states and 268 transitions. Second operand has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 15 states have internal predecessors, (79), 8 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 6 states have call predecessors, (32), 8 states have call successors, (32) [2024-10-14 14:04:38,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:38,155 INFO L93 Difference]: Finished difference Result 426 states and 560 transitions. [2024-10-14 14:04:38,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 14:04:38,156 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 15 states have internal predecessors, (79), 8 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 6 states have call predecessors, (32), 8 states have call successors, (32) Word has length 119 [2024-10-14 14:04:38,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:38,158 INFO L225 Difference]: With dead ends: 426 [2024-10-14 14:04:38,158 INFO L226 Difference]: Without dead ends: 225 [2024-10-14 14:04:38,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2024-10-14 14:04:38,164 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 204 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:38,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 355 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-14 14:04:38,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-10-14 14:04:38,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 165. [2024-10-14 14:04:38,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 138 states have (on average 1.2681159420289856) internal successors, (175), 139 states have internal predecessors, (175), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-14 14:04:38,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 215 transitions. [2024-10-14 14:04:38,219 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 215 transitions. Word has length 119 [2024-10-14 14:04:38,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:38,220 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 215 transitions. [2024-10-14 14:04:38,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 15 states have internal predecessors, (79), 8 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 6 states have call predecessors, (32), 8 states have call successors, (32) [2024-10-14 14:04:38,220 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 215 transitions. [2024-10-14 14:04:38,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-10-14 14:04:38,221 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:38,221 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:38,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 14:04:38,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:04:38,422 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:38,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:38,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1968711144, now seen corresponding path program 1 times [2024-10-14 14:04:38,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:38,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813944318] [2024-10-14 14:04:38,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:38,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:38,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:04:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:38,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:04:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:39,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:04:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:39,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:04:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:39,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:04:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:39,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:04:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:39,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:04:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:39,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:04:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:39,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:04:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:39,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:04:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:39,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:04:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:39,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:04:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:39,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:04:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:39,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 14:04:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:39,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 14:04:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:39,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 14:04:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:39,068 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 14:04:39,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:39,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813944318] [2024-10-14 14:04:39,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813944318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:04:39,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:04:39,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 14:04:39,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879131239] [2024-10-14 14:04:39,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:04:39,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 14:04:39,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:39,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 14:04:39,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-14 14:04:39,070 INFO L87 Difference]: Start difference. First operand 165 states and 215 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 14:04:39,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:39,605 INFO L93 Difference]: Finished difference Result 337 states and 435 transitions. [2024-10-14 14:04:39,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:04:39,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2024-10-14 14:04:39,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:39,608 INFO L225 Difference]: With dead ends: 337 [2024-10-14 14:04:39,608 INFO L226 Difference]: Without dead ends: 185 [2024-10-14 14:04:39,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-14 14:04:39,609 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 151 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:39,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 266 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 14:04:39,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-10-14 14:04:39,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 165. [2024-10-14 14:04:39,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 138 states have (on average 1.2318840579710144) internal successors, (170), 139 states have internal predecessors, (170), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-14 14:04:39,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 210 transitions. [2024-10-14 14:04:39,624 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 210 transitions. Word has length 119 [2024-10-14 14:04:39,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:39,624 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 210 transitions. [2024-10-14 14:04:39,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 14:04:39,625 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 210 transitions. [2024-10-14 14:04:39,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-10-14 14:04:39,625 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:39,625 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:39,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 14:04:39,626 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:39,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:39,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1538906956, now seen corresponding path program 1 times [2024-10-14 14:04:39,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:39,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138107751] [2024-10-14 14:04:39,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:39,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:40,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:04:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:40,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:04:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:40,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:04:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:40,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:04:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:40,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:04:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:40,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:04:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:40,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:04:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:40,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:04:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:40,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:04:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:40,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:04:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:40,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:04:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:40,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:04:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:40,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:04:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:40,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 14:04:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:40,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 14:04:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:40,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 14:04:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:40,514 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-10-14 14:04:40,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:40,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138107751] [2024-10-14 14:04:40,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138107751] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:04:40,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30964248] [2024-10-14 14:04:40,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:40,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:04:40,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:04:40,516 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) [2024-10-14 14:04:40,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 14:04:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:40,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-14 14:04:40,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:04:41,129 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 [2024-10-14 14:04:41,551 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 25 treesize of output 13 [2024-10-14 14:04:41,867 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 25 treesize of output 13 [2024-10-14 14:04:42,180 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 25 treesize of output 13 [2024-10-14 14:04:42,468 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 25 treesize of output 13 [2024-10-14 14:04:42,785 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 25 treesize of output 13 [2024-10-14 14:04:43,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:04:43,101 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2024-10-14 14:04:43,102 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 25 treesize of output 27 [2024-10-14 14:04:43,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:04:43,427 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2024-10-14 14:04:43,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 38 [2024-10-14 14:04:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 183 proven. 136 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-10-14 14:04:43,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:04:43,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30964248] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:04:43,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 14:04:43,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2024-10-14 14:04:43,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41531613] [2024-10-14 14:04:43,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 14:04:43,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 14:04:43,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:43,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 14:04:43,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-10-14 14:04:43,598 INFO L87 Difference]: Start difference. First operand 165 states and 210 transitions. Second operand has 18 states, 16 states have (on average 5.6875) internal successors, (91), 18 states have internal predecessors, (91), 9 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 7 states have call predecessors, (32), 9 states have call successors, (32) [2024-10-14 14:04:44,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:44,897 INFO L93 Difference]: Finished difference Result 353 states and 447 transitions. [2024-10-14 14:04:44,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 14:04:44,899 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.6875) internal successors, (91), 18 states have internal predecessors, (91), 9 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 7 states have call predecessors, (32), 9 states have call successors, (32) Word has length 120 [2024-10-14 14:04:44,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:44,900 INFO L225 Difference]: With dead ends: 353 [2024-10-14 14:04:44,900 INFO L226 Difference]: Without dead ends: 201 [2024-10-14 14:04:44,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2024-10-14 14:04:44,901 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 159 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:44,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 421 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-14 14:04:44,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-10-14 14:04:44,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 182. [2024-10-14 14:04:44,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 155 states have (on average 1.232258064516129) internal successors, (191), 156 states have internal predecessors, (191), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-14 14:04:44,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 231 transitions. [2024-10-14 14:04:44,917 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 231 transitions. Word has length 120 [2024-10-14 14:04:44,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:44,917 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 231 transitions. [2024-10-14 14:04:44,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.6875) internal successors, (91), 18 states have internal predecessors, (91), 9 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 7 states have call predecessors, (32), 9 states have call successors, (32) [2024-10-14 14:04:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 231 transitions. [2024-10-14 14:04:44,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-14 14:04:44,919 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:44,919 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:44,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 14:04:45,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:04:45,119 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:45,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:45,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1936345144, now seen corresponding path program 1 times [2024-10-14 14:04:45,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:45,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200564653] [2024-10-14 14:04:45,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:45,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 14:04:45,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493708736] [2024-10-14 14:04:45,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:45,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:04:45,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:04:45,166 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:04:45,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 14:04:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:45,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-14 14:04:45,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:04:45,366 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 23 treesize of output 11 [2024-10-14 14:04:45,596 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 23 treesize of output 11 [2024-10-14 14:04:45,855 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 23 treesize of output 11 [2024-10-14 14:04:46,107 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 23 treesize of output 11 [2024-10-14 14:04:46,407 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 23 treesize of output 11 [2024-10-14 14:04:46,669 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 23 treesize of output 11 [2024-10-14 14:04:46,932 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 23 treesize of output 11 [2024-10-14 14:04:47,206 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 23 treesize of output 11 [2024-10-14 14:04:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-10-14 14:04:47,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:04:47,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:47,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200564653] [2024-10-14 14:04:47,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 14:04:47,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493708736] [2024-10-14 14:04:47,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493708736] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:04:47,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-14 14:04:47,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2024-10-14 14:04:47,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777602891] [2024-10-14 14:04:47,784 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-14 14:04:47,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:04:47,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:47,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:04:47,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-14 14:04:47,785 INFO L87 Difference]: Start difference. First operand 182 states and 231 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-14 14:04:48,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:48,262 INFO L93 Difference]: Finished difference Result 461 states and 579 transitions. [2024-10-14 14:04:48,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:04:48,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 121 [2024-10-14 14:04:48,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:48,264 INFO L225 Difference]: With dead ends: 461 [2024-10-14 14:04:48,264 INFO L226 Difference]: Without dead ends: 280 [2024-10-14 14:04:48,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-10-14 14:04:48,265 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 91 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:48,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 156 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 14:04:48,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-10-14 14:04:48,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 268. [2024-10-14 14:04:48,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 219 states have (on average 1.1917808219178083) internal successors, (261), 220 states have internal predecessors, (261), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-14 14:04:48,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 333 transitions. [2024-10-14 14:04:48,292 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 333 transitions. Word has length 121 [2024-10-14 14:04:48,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:48,293 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 333 transitions. [2024-10-14 14:04:48,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-14 14:04:48,293 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 333 transitions. [2024-10-14 14:04:48,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-14 14:04:48,294 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:48,294 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:48,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 14:04:48,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-14 14:04:48,495 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:48,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:48,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1089976494, now seen corresponding path program 1 times [2024-10-14 14:04:48,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:48,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146793800] [2024-10-14 14:04:48,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:48,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 14:04:48,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [600696812] [2024-10-14 14:04:48,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:48,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:04:48,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:04:48,539 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:04:48,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 14:04:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:48,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-10-14 14:04:48,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:04:48,772 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 23 treesize of output 11 [2024-10-14 14:04:49,159 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 23 treesize of output 11 [2024-10-14 14:04:49,537 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 23 treesize of output 11 [2024-10-14 14:04:49,967 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 23 treesize of output 11 [2024-10-14 14:04:50,373 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 23 treesize of output 11 [2024-10-14 14:04:50,885 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 23 treesize of output 11 [2024-10-14 14:04:51,424 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 23 treesize of output 11 [2024-10-14 14:04:51,937 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 23 treesize of output 11 [2024-10-14 14:04:52,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:04:52,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:04:52,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:04:52,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:04:52,588 INFO L349 Elim1Store]: treesize reduction 69, result has 9.2 percent of original size [2024-10-14 14:04:52,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 50 treesize of output 54 [2024-10-14 14:04:53,196 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-10-14 14:04:53,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:04:53,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:53,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146793800] [2024-10-14 14:04:53,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 14:04:53,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600696812] [2024-10-14 14:04:53,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600696812] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:04:53,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-14 14:04:53,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-10-14 14:04:53,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715134817] [2024-10-14 14:04:53,864 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-14 14:04:53,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 14:04:53,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:53,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 14:04:53,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-14 14:04:53,865 INFO L87 Difference]: Start difference. First operand 268 states and 333 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-14 14:04:54,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:54,906 INFO L93 Difference]: Finished difference Result 560 states and 694 transitions. [2024-10-14 14:04:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:04:54,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 122 [2024-10-14 14:04:54,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:54,909 INFO L225 Difference]: With dead ends: 560 [2024-10-14 14:04:54,909 INFO L226 Difference]: Without dead ends: 293 [2024-10-14 14:04:54,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-14 14:04:54,910 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 120 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:54,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 230 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 361 Invalid, 1 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 14:04:54,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-10-14 14:04:54,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 279. [2024-10-14 14:04:54,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 230 states have (on average 1.182608695652174) internal successors, (272), 231 states have internal predecessors, (272), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-14 14:04:54,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 344 transitions. [2024-10-14 14:04:54,937 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 344 transitions. Word has length 122 [2024-10-14 14:04:54,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:54,938 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 344 transitions. [2024-10-14 14:04:54,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-14 14:04:54,938 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 344 transitions. [2024-10-14 14:04:54,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-14 14:04:54,938 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:54,939 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:54,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-14 14:04:55,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:04:55,143 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:55,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:55,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1470002344, now seen corresponding path program 1 times [2024-10-14 14:04:55,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:55,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106714833] [2024-10-14 14:04:55,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:55,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:55,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:04:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:55,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:04:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:55,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:04:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:55,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:04:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:55,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:04:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:55,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:04:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:55,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:04:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:55,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:04:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:55,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:04:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:55,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:04:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:55,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:04:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:55,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:04:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:55,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:04:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:55,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 14:04:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:55,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 14:04:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:55,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 14:04:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 14:04:55,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:55,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106714833] [2024-10-14 14:04:55,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106714833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:04:55,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:04:55,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 14:04:55,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407736479] [2024-10-14 14:04:55,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:04:55,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:04:55,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:55,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:04:55,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 14:04:55,837 INFO L87 Difference]: Start difference. First operand 279 states and 344 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-14 14:04:56,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:04:56,736 INFO L93 Difference]: Finished difference Result 457 states and 570 transitions. [2024-10-14 14:04:56,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:04:56,736 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 122 [2024-10-14 14:04:56,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:04:56,743 INFO L225 Difference]: With dead ends: 457 [2024-10-14 14:04:56,743 INFO L226 Difference]: Without dead ends: 276 [2024-10-14 14:04:56,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-14 14:04:56,744 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 143 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 14:04:56,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 235 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 14:04:56,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-10-14 14:04:56,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 273. [2024-10-14 14:04:56,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 224 states have (on average 1.1785714285714286) internal successors, (264), 225 states have internal predecessors, (264), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-14 14:04:56,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 336 transitions. [2024-10-14 14:04:56,797 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 336 transitions. Word has length 122 [2024-10-14 14:04:56,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:04:56,797 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 336 transitions. [2024-10-14 14:04:56,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-14 14:04:56,798 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 336 transitions. [2024-10-14 14:04:56,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-14 14:04:56,798 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:04:56,798 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:04:56,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 14:04:56,799 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:04:56,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:04:56,799 INFO L85 PathProgramCache]: Analyzing trace with hash 461491875, now seen corresponding path program 1 times [2024-10-14 14:04:56,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:04:56,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407167722] [2024-10-14 14:04:56,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:56,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:04:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 14:04:56,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813308134] [2024-10-14 14:04:56,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:04:56,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:04:56,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:04:56,843 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:04:56,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 14:04:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:04:56,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-14 14:04:56,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:04:57,040 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 23 treesize of output 11 [2024-10-14 14:04:57,318 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 23 treesize of output 11 [2024-10-14 14:04:57,592 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 23 treesize of output 11 [2024-10-14 14:04:57,865 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 23 treesize of output 11 [2024-10-14 14:04:58,124 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 23 treesize of output 11 [2024-10-14 14:04:58,398 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 23 treesize of output 11 [2024-10-14 14:04:58,679 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 23 treesize of output 11 [2024-10-14 14:04:58,950 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 23 treesize of output 11 [2024-10-14 14:04:59,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 14:04:59,192 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 23 treesize of output 11 [2024-10-14 14:04:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-10-14 14:04:59,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:04:59,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:04:59,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407167722] [2024-10-14 14:04:59,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 14:04:59,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813308134] [2024-10-14 14:04:59,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813308134] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:04:59,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-14 14:04:59,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2024-10-14 14:04:59,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370635394] [2024-10-14 14:04:59,907 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-14 14:04:59,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:04:59,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:04:59,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:04:59,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-14 14:04:59,908 INFO L87 Difference]: Start difference. First operand 273 states and 336 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-14 14:05:00,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:05:00,416 INFO L93 Difference]: Finished difference Result 544 states and 672 transitions. [2024-10-14 14:05:00,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:05:00,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 123 [2024-10-14 14:05:00,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:05:00,419 INFO L225 Difference]: With dead ends: 544 [2024-10-14 14:05:00,419 INFO L226 Difference]: Without dead ends: 272 [2024-10-14 14:05:00,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-10-14 14:05:00,420 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 67 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 14:05:00,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 275 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 14:05:00,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-10-14 14:05:00,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 265. [2024-10-14 14:05:00,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 216 states have (on average 1.1712962962962963) internal successors, (253), 217 states have internal predecessors, (253), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-14 14:05:00,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 325 transitions. [2024-10-14 14:05:00,455 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 325 transitions. Word has length 123 [2024-10-14 14:05:00,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:05:00,455 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 325 transitions. [2024-10-14 14:05:00,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-14 14:05:00,456 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 325 transitions. [2024-10-14 14:05:00,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 14:05:00,456 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:05:00,456 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:05:00,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 14:05:00,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:05:00,661 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:05:00,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:05:00,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1010432237, now seen corresponding path program 1 times [2024-10-14 14:05:00,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:05:00,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106622694] [2024-10-14 14:05:00,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:05:00,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:05:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:00,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:05:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:00,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:05:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:00,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:05:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:00,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:05:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:00,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:05:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:00,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:05:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:00,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:05:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:00,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:05:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:00,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:05:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:00,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:05:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:00,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:05:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:00,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:05:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:00,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:05:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:00,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 14:05:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:00,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 14:05:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:00,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 14:05:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 14:05:00,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:05:00,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106622694] [2024-10-14 14:05:00,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106622694] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:05:00,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:05:00,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:05:00,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616170690] [2024-10-14 14:05:00,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:05:00,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:05:00,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:05:00,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:05:00,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:05:00,902 INFO L87 Difference]: Start difference. First operand 265 states and 325 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 14:05:01,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:05:01,267 INFO L93 Difference]: Finished difference Result 477 states and 597 transitions. [2024-10-14 14:05:01,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:05:01,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2024-10-14 14:05:01,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:05:01,269 INFO L225 Difference]: With dead ends: 477 [2024-10-14 14:05:01,269 INFO L226 Difference]: Without dead ends: 302 [2024-10-14 14:05:01,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:05:01,270 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 29 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 14:05:01,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 344 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 14:05:01,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-10-14 14:05:01,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 269. [2024-10-14 14:05:01,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 220 states have (on average 1.1772727272727272) internal successors, (259), 221 states have internal predecessors, (259), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-14 14:05:01,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 331 transitions. [2024-10-14 14:05:01,339 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 331 transitions. Word has length 124 [2024-10-14 14:05:01,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:05:01,339 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 331 transitions. [2024-10-14 14:05:01,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 14:05:01,339 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 331 transitions. [2024-10-14 14:05:01,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 14:05:01,340 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:05:01,340 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:05:01,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 14:05:01,340 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:05:01,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:05:01,341 INFO L85 PathProgramCache]: Analyzing trace with hash -330373867, now seen corresponding path program 1 times [2024-10-14 14:05:01,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:05:01,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780846922] [2024-10-14 14:05:01,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:05:01,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:05:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:02,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:05:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:02,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:05:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:02,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:05:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:02,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:05:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:02,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:05:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:02,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:05:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:02,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:05:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:02,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:05:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:02,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:05:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:02,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:05:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:02,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:05:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:02,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:05:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:02,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:05:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:02,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 14:05:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:02,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 14:05:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:02,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 14:05:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 14:05:02,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:05:02,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780846922] [2024-10-14 14:05:02,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780846922] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:05:02,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:05:02,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 14:05:02,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566276844] [2024-10-14 14:05:02,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:05:02,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 14:05:02,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:05:02,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 14:05:02,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 14:05:02,297 INFO L87 Difference]: Start difference. First operand 269 states and 331 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 14:05:03,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:05:03,310 INFO L93 Difference]: Finished difference Result 513 states and 646 transitions. [2024-10-14 14:05:03,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:05:03,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2024-10-14 14:05:03,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:05:03,312 INFO L225 Difference]: With dead ends: 513 [2024-10-14 14:05:03,312 INFO L226 Difference]: Without dead ends: 334 [2024-10-14 14:05:03,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-14 14:05:03,313 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 216 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-14 14:05:03,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 268 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-14 14:05:03,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-10-14 14:05:03,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 298. [2024-10-14 14:05:03,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 249 states have (on average 1.1847389558232932) internal successors, (295), 250 states have internal predecessors, (295), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-14 14:05:03,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 367 transitions. [2024-10-14 14:05:03,363 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 367 transitions. Word has length 124 [2024-10-14 14:05:03,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:05:03,363 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 367 transitions. [2024-10-14 14:05:03,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-10-14 14:05:03,363 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 367 transitions. [2024-10-14 14:05:03,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 14:05:03,364 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:05:03,364 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:05:03,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 14:05:03,364 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:05:03,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:05:03,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1711496815, now seen corresponding path program 1 times [2024-10-14 14:05:03,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:05:03,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225241742] [2024-10-14 14:05:03,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:05:03,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:05:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:05,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:05:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:05,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:05:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:05,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:05:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:05,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:05:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:05,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:05:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:05,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:05:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:05,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:05:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:05,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:05:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:05,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:05:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:05,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:05:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:05,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:05:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:05,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:05:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:05,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:05:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:05,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 14:05:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:05,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 14:05:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:05,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 14:05:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:05,411 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 14:05:05,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:05:05,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225241742] [2024-10-14 14:05:05,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225241742] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:05:05,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:05:05,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-14 14:05:05,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952126038] [2024-10-14 14:05:05,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:05:05,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 14:05:05,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:05:05,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 14:05:05,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-10-14 14:05:05,413 INFO L87 Difference]: Start difference. First operand 298 states and 367 transitions. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 13 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-10-14 14:05:08,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 14:05:08,180 INFO L93 Difference]: Finished difference Result 563 states and 703 transitions. [2024-10-14 14:05:08,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 14:05:08,180 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 13 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 124 [2024-10-14 14:05:08,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 14:05:08,182 INFO L225 Difference]: With dead ends: 563 [2024-10-14 14:05:08,182 INFO L226 Difference]: Without dead ends: 355 [2024-10-14 14:05:08,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2024-10-14 14:05:08,183 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 351 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-14 14:05:08,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 386 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-14 14:05:08,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-10-14 14:05:08,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 324. [2024-10-14 14:05:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 275 states have (on average 1.1818181818181819) internal successors, (325), 276 states have internal predecessors, (325), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-14 14:05:08,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 397 transitions. [2024-10-14 14:05:08,224 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 397 transitions. Word has length 124 [2024-10-14 14:05:08,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 14:05:08,225 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 397 transitions. [2024-10-14 14:05:08,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 13 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-10-14 14:05:08,225 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 397 transitions. [2024-10-14 14:05:08,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 14:05:08,225 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 14:05:08,226 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:05:08,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 14:05:08,226 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 14:05:08,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:05:08,226 INFO L85 PathProgramCache]: Analyzing trace with hash 233051784, now seen corresponding path program 1 times [2024-10-14 14:05:08,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:05:08,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430961460] [2024-10-14 14:05:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:05:08,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:05:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:11,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 14:05:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:11,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-14 14:05:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:11,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-14 14:05:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:11,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-14 14:05:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:11,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-14 14:05:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:11,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-14 14:05:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:11,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-14 14:05:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:11,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-14 14:05:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:11,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-14 14:05:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:11,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-14 14:05:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:11,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-14 14:05:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:11,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-14 14:05:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:11,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-14 14:05:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:11,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-14 14:05:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:11,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-14 14:05:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:11,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-14 14:05:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:05:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-14 14:05:11,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:05:11,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430961460] [2024-10-14 14:05:11,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430961460] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:05:11,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:05:11,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-10-14 14:05:11,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628657513] [2024-10-14 14:05:11,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:05:11,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-14 14:05:11,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:05:11,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-14 14:05:11,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2024-10-14 14:05:11,566 INFO L87 Difference]: Start difference. First operand 324 states and 397 transitions. Second operand has 21 states, 20 states have (on average 2.35) internal successors, (47), 21 states have internal predecessors, (47), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16)