./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c -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 9078dc62fb834f9a41b95ee6a842bb2e61905311e37b0fb13d9ab1be77d00451 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:56:51,655 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:56:51,723 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:56:51,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:56:51,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:56:51,748 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:56:51,748 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:56:51,749 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:56:51,749 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:56:51,749 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:56:51,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:56:51,750 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:56:51,751 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:56:51,753 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:56:51,753 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:56:51,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:56:51,754 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:56:51,754 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:56:51,754 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:56:51,754 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:56:51,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:56:51,755 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:56:51,755 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:56:51,755 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:56:51,755 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:56:51,756 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:56:51,756 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:56:51,756 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:56:51,756 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:56:51,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:56:51,756 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:56:51,757 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:56:51,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:56:51,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:56:51,757 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:56:51,757 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:56:51,757 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:56:51,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:56:51,758 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:56:51,758 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:56:51,758 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:56:51,759 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:56:51,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9078dc62fb834f9a41b95ee6a842bb2e61905311e37b0fb13d9ab1be77d00451 [2024-11-18 15:56:51,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:56:51,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:56:51,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:56:51,965 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:56:51,965 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:56:51,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2024-11-18 15:56:53,194 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:56:53,540 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:56:53,541 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2024-11-18 15:56:53,567 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9df0c2665/af673693d9d74d32aaae56bd4c126b80/FLAGad7363081 [2024-11-18 15:56:53,582 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9df0c2665/af673693d9d74d32aaae56bd4c126b80 [2024-11-18 15:56:53,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:56:53,586 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:56:53,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:56:53,589 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:56:53,593 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:56:53,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:56:53" (1/1) ... [2024-11-18 15:56:53,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ce87ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:53, skipping insertion in model container [2024-11-18 15:56:53,594 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:56:53" (1/1) ... [2024-11-18 15:56:53,677 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:56:53,966 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c[6487,6500] [2024-11-18 15:56:54,015 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c[13423,13436] [2024-11-18 15:56:54,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:56:54,530 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:56:54,546 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c[6487,6500] [2024-11-18 15:56:54,553 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c[13423,13436] [2024-11-18 15:56:54,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:56:54,917 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:56:54,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:54 WrapperNode [2024-11-18 15:56:54,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:56:54,919 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:56:54,919 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:56:54,919 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:56:54,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:54" (1/1) ... [2024-11-18 15:56:54,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:54" (1/1) ... [2024-11-18 15:56:55,235 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4984 [2024-11-18 15:56:55,235 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:56:55,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:56:55,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:56:55,236 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:56:55,245 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:54" (1/1) ... [2024-11-18 15:56:55,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:54" (1/1) ... [2024-11-18 15:56:55,290 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:54" (1/1) ... [2024-11-18 15:56:55,415 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 15:56:55,416 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:54" (1/1) ... [2024-11-18 15:56:55,416 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:54" (1/1) ... [2024-11-18 15:56:55,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:54" (1/1) ... [2024-11-18 15:56:55,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:54" (1/1) ... [2024-11-18 15:56:55,547 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:54" (1/1) ... [2024-11-18 15:56:55,560 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:54" (1/1) ... [2024-11-18 15:56:55,616 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:56:55,617 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:56:55,618 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:56:55,618 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:56:55,618 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:54" (1/1) ... [2024-11-18 15:56:55,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:56:55,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:56:55,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 15:56:55,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 15:56:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:56:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:56:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:56:55,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:56:55,750 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:56:55,752 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:56:58,877 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-11-18 15:56:58,877 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:56:58,912 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:56:58,912 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 15:56:58,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:56:58 BoogieIcfgContainer [2024-11-18 15:56:58,912 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:56:58,914 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:56:58,914 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:56:58,917 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:56:58,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:56:53" (1/3) ... [2024-11-18 15:56:58,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a21e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:56:58, skipping insertion in model container [2024-11-18 15:56:58,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:54" (2/3) ... [2024-11-18 15:56:58,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a21e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:56:58, skipping insertion in model container [2024-11-18 15:56:58,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:56:58" (3/3) ... [2024-11-18 15:56:58,919 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2024-11-18 15:56:58,931 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:56:58,931 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 15:56:59,005 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:56:59,010 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;@e189c7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:56:59,010 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 15:56:59,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:56:59,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-18 15:56:59,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:56:59,026 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:56:59,026 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:56:59,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:56:59,031 INFO L85 PathProgramCache]: Analyzing trace with hash -934405548, now seen corresponding path program 1 times [2024-11-18 15:56:59,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:56:59,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296117586] [2024-11-18 15:56:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:56:59,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:56:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:56:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:56:59,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:56:59,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296117586] [2024-11-18 15:56:59,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296117586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:56:59,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:56:59,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 15:56:59,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789437466] [2024-11-18 15:56:59,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:56:59,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 15:56:59,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:56:59,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 15:56:59,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 15:56:59,231 INFO L87 Difference]: Start difference. First operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:56:59,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:56:59,303 INFO L93 Difference]: Finished difference Result 1724 states and 3278 transitions. [2024-11-18 15:56:59,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 15:56:59,310 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-18 15:56:59,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:56:59,323 INFO L225 Difference]: With dead ends: 1724 [2024-11-18 15:56:59,326 INFO L226 Difference]: Without dead ends: 808 [2024-11-18 15:56:59,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 15:56:59,336 INFO L432 NwaCegarLoop]: 1591 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:56:59,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:56:59,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-18 15:56:59,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-18 15:56:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8945409429280398) internal successors, (1527), 807 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:56:59,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1527 transitions. [2024-11-18 15:56:59,407 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1527 transitions. Word has length 20 [2024-11-18 15:56:59,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:56:59,407 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1527 transitions. [2024-11-18 15:56:59,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:56:59,408 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1527 transitions. [2024-11-18 15:56:59,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-18 15:56:59,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:56:59,409 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:56:59,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:56:59,410 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:56:59,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:56:59,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1945522798, now seen corresponding path program 1 times [2024-11-18 15:56:59,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:56:59,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109158578] [2024-11-18 15:56:59,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:56:59,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:56:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:56:59,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:56:59,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:56:59,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109158578] [2024-11-18 15:56:59,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109158578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:56:59,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:56:59,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:56:59,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353624454] [2024-11-18 15:56:59,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:56:59,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:56:59,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:56:59,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:56:59,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:56:59,592 INFO L87 Difference]: Start difference. First operand 808 states and 1527 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:56:59,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:56:59,686 INFO L93 Difference]: Finished difference Result 844 states and 1581 transitions. [2024-11-18 15:56:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:56:59,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-18 15:56:59,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:56:59,689 INFO L225 Difference]: With dead ends: 844 [2024-11-18 15:56:59,689 INFO L226 Difference]: Without dead ends: 808 [2024-11-18 15:56:59,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:56:59,691 INFO L432 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:56:59,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:56:59,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-18 15:56:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-18 15:56:59,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8746898263027296) internal successors, (1511), 807 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:56:59,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1511 transitions. [2024-11-18 15:56:59,704 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1511 transitions. Word has length 20 [2024-11-18 15:56:59,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:56:59,704 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1511 transitions. [2024-11-18 15:56:59,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:56:59,704 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1511 transitions. [2024-11-18 15:56:59,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-18 15:56:59,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:56:59,706 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:56:59,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:56:59,706 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:56:59,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:56:59,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597962, now seen corresponding path program 1 times [2024-11-18 15:56:59,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:56:59,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602496963] [2024-11-18 15:56:59,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:56:59,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:56:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:56:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:56:59,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:56:59,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602496963] [2024-11-18 15:56:59,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602496963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:56:59,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:56:59,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:56:59,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979669814] [2024-11-18 15:56:59,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:56:59,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:56:59,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:56:59,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:56:59,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:56:59,814 INFO L87 Difference]: Start difference. First operand 808 states and 1511 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:56:59,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:56:59,902 INFO L93 Difference]: Finished difference Result 1000 states and 1811 transitions. [2024-11-18 15:56:59,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 15:56:59,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-18 15:56:59,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:56:59,908 INFO L225 Difference]: With dead ends: 1000 [2024-11-18 15:56:59,908 INFO L226 Difference]: Without dead ends: 968 [2024-11-18 15:56:59,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:56:59,910 INFO L432 NwaCegarLoop]: 1505 mSDtfsCounter, 4682 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:56:59,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4682 Valid, 1758 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:56:59,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2024-11-18 15:56:59,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 838. [2024-11-18 15:56:59,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 836 states have (on average 1.8636363636363635) internal successors, (1558), 837 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:56:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1558 transitions. [2024-11-18 15:56:59,925 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1558 transitions. Word has length 35 [2024-11-18 15:56:59,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:56:59,926 INFO L471 AbstractCegarLoop]: Abstraction has 838 states and 1558 transitions. [2024-11-18 15:56:59,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:56:59,928 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1558 transitions. [2024-11-18 15:56:59,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-18 15:56:59,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:56:59,929 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:56:59,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:56:59,929 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:56:59,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:56:59,930 INFO L85 PathProgramCache]: Analyzing trace with hash 523901274, now seen corresponding path program 1 times [2024-11-18 15:56:59,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:56:59,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548444918] [2024-11-18 15:56:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:56:59,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:56:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:00,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:00,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548444918] [2024-11-18 15:57:00,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548444918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:57:00,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:57:00,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:57:00,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727250454] [2024-11-18 15:57:00,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:57:00,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:57:00,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:00,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:57:00,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:57:00,019 INFO L87 Difference]: Start difference. First operand 838 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:00,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:00,052 INFO L93 Difference]: Finished difference Result 951 states and 1733 transitions. [2024-11-18 15:57:00,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:57:00,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-18 15:57:00,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:00,055 INFO L225 Difference]: With dead ends: 951 [2024-11-18 15:57:00,055 INFO L226 Difference]: Without dead ends: 889 [2024-11-18 15:57:00,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:57:00,056 INFO L432 NwaCegarLoop]: 1507 mSDtfsCounter, 1468 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:00,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:57:00,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-11-18 15:57:00,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 885. [2024-11-18 15:57:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8437146092865233) internal successors, (1628), 884 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:00,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1628 transitions. [2024-11-18 15:57:00,069 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1628 transitions. Word has length 37 [2024-11-18 15:57:00,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:00,070 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1628 transitions. [2024-11-18 15:57:00,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:00,070 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1628 transitions. [2024-11-18 15:57:00,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-18 15:57:00,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:00,071 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:00,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:57:00,071 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:00,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:00,072 INFO L85 PathProgramCache]: Analyzing trace with hash 590394786, now seen corresponding path program 1 times [2024-11-18 15:57:00,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:00,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346195941] [2024-11-18 15:57:00,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:00,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:00,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:00,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:00,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346195941] [2024-11-18 15:57:00,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346195941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:57:00,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:57:00,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:57:00,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135790624] [2024-11-18 15:57:00,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:57:00,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:57:00,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:00,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:57:00,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:57:00,188 INFO L87 Difference]: Start difference. First operand 885 states and 1628 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:00,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:00,257 INFO L93 Difference]: Finished difference Result 996 states and 1796 transitions. [2024-11-18 15:57:00,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:57:00,257 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-18 15:57:00,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:00,260 INFO L225 Difference]: With dead ends: 996 [2024-11-18 15:57:00,260 INFO L226 Difference]: Without dead ends: 887 [2024-11-18 15:57:00,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:57:00,261 INFO L432 NwaCegarLoop]: 1506 mSDtfsCounter, 2952 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:00,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 1598 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:57:00,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-11-18 15:57:00,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2024-11-18 15:57:00,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8414496036240091) internal successors, (1626), 884 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:00,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1626 transitions. [2024-11-18 15:57:00,276 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1626 transitions. Word has length 37 [2024-11-18 15:57:00,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:00,277 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1626 transitions. [2024-11-18 15:57:00,277 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:00,278 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1626 transitions. [2024-11-18 15:57:00,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-18 15:57:00,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:00,281 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:00,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:57:00,281 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:00,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:00,281 INFO L85 PathProgramCache]: Analyzing trace with hash 707645968, now seen corresponding path program 1 times [2024-11-18 15:57:00,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:00,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739731125] [2024-11-18 15:57:00,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:00,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:00,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:00,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:00,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739731125] [2024-11-18 15:57:00,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739731125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:57:00,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:57:00,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 15:57:00,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606725813] [2024-11-18 15:57:00,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:57:00,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 15:57:00,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:00,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 15:57:00,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:57:00,462 INFO L87 Difference]: Start difference. First operand 885 states and 1626 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:00,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:00,522 INFO L93 Difference]: Finished difference Result 893 states and 1635 transitions. [2024-11-18 15:57:00,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 15:57:00,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-18 15:57:00,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:00,526 INFO L225 Difference]: With dead ends: 893 [2024-11-18 15:57:00,526 INFO L226 Difference]: Without dead ends: 891 [2024-11-18 15:57:00,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:57:00,527 INFO L432 NwaCegarLoop]: 1505 mSDtfsCounter, 0 mSDsluCounter, 9017 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10522 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:00,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10522 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:57:00,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-11-18 15:57:00,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2024-11-18 15:57:00,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 889 states have (on average 1.8346456692913387) internal successors, (1631), 890 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:00,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1631 transitions. [2024-11-18 15:57:00,539 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1631 transitions. Word has length 38 [2024-11-18 15:57:00,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:00,539 INFO L471 AbstractCegarLoop]: Abstraction has 891 states and 1631 transitions. [2024-11-18 15:57:00,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:00,539 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1631 transitions. [2024-11-18 15:57:00,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-18 15:57:00,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:00,540 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:00,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:57:00,540 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:00,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:00,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1903217474, now seen corresponding path program 1 times [2024-11-18 15:57:00,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:00,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086446826] [2024-11-18 15:57:00,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:00,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:00,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:00,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:00,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086446826] [2024-11-18 15:57:00,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086446826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:57:00,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:57:00,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:57:00,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086826914] [2024-11-18 15:57:00,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:57:00,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:57:00,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:00,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:57:00,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:57:00,578 INFO L87 Difference]: Start difference. First operand 891 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:00,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:00,601 INFO L93 Difference]: Finished difference Result 1105 states and 1943 transitions. [2024-11-18 15:57:00,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:57:00,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-18 15:57:00,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:00,604 INFO L225 Difference]: With dead ends: 1105 [2024-11-18 15:57:00,604 INFO L226 Difference]: Without dead ends: 990 [2024-11-18 15:57:00,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:57:00,605 INFO L432 NwaCegarLoop]: 1528 mSDtfsCounter, 1475 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:00,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1587 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:57:00,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-11-18 15:57:00,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2024-11-18 15:57:00,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 986 states have (on average 1.793103448275862) internal successors, (1768), 987 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1768 transitions. [2024-11-18 15:57:00,620 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1768 transitions. Word has length 39 [2024-11-18 15:57:00,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:00,620 INFO L471 AbstractCegarLoop]: Abstraction has 988 states and 1768 transitions. [2024-11-18 15:57:00,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:00,620 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1768 transitions. [2024-11-18 15:57:00,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-18 15:57:00,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:00,621 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:00,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:57:00,621 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:00,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:00,622 INFO L85 PathProgramCache]: Analyzing trace with hash 122284610, now seen corresponding path program 1 times [2024-11-18 15:57:00,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:00,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453992121] [2024-11-18 15:57:00,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:00,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:00,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:00,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453992121] [2024-11-18 15:57:00,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453992121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:57:00,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:57:00,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:57:00,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812594619] [2024-11-18 15:57:00,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:57:00,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:57:00,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:00,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:57:00,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:57:00,685 INFO L87 Difference]: Start difference. First operand 988 states and 1768 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:00,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:00,710 INFO L93 Difference]: Finished difference Result 1380 states and 2326 transitions. [2024-11-18 15:57:00,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:57:00,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-18 15:57:00,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:00,715 INFO L225 Difference]: With dead ends: 1380 [2024-11-18 15:57:00,715 INFO L226 Difference]: Without dead ends: 1168 [2024-11-18 15:57:00,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:57:00,716 INFO L432 NwaCegarLoop]: 1538 mSDtfsCounter, 1477 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:00,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1593 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:57:00,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-11-18 15:57:00,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1166. [2024-11-18 15:57:00,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1164 states have (on average 1.7268041237113403) internal successors, (2010), 1165 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:00,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2010 transitions. [2024-11-18 15:57:00,738 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2010 transitions. Word has length 39 [2024-11-18 15:57:00,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:00,739 INFO L471 AbstractCegarLoop]: Abstraction has 1166 states and 2010 transitions. [2024-11-18 15:57:00,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:00,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2010 transitions. [2024-11-18 15:57:00,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-18 15:57:00,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:00,740 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:00,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:57:00,740 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:00,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:00,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1688735299, now seen corresponding path program 1 times [2024-11-18 15:57:00,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:00,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817630082] [2024-11-18 15:57:00,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:00,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:00,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:00,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817630082] [2024-11-18 15:57:00,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817630082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:57:00,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:57:00,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:57:00,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120249440] [2024-11-18 15:57:00,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:57:00,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:57:00,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:00,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:57:00,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:57:00,784 INFO L87 Difference]: Start difference. First operand 1166 states and 2010 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:00,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:00,813 INFO L93 Difference]: Finished difference Result 1589 states and 2616 transitions. [2024-11-18 15:57:00,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:57:00,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-18 15:57:00,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:00,818 INFO L225 Difference]: With dead ends: 1589 [2024-11-18 15:57:00,818 INFO L226 Difference]: Without dead ends: 1354 [2024-11-18 15:57:00,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:57:00,820 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 1476 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:00,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:57:00,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2024-11-18 15:57:00,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2024-11-18 15:57:00,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1350 states have (on average 1.677037037037037) internal successors, (2264), 1351 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:00,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2264 transitions. [2024-11-18 15:57:00,851 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2264 transitions. Word has length 41 [2024-11-18 15:57:00,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:00,852 INFO L471 AbstractCegarLoop]: Abstraction has 1352 states and 2264 transitions. [2024-11-18 15:57:00,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:00,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2264 transitions. [2024-11-18 15:57:00,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-18 15:57:00,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:00,854 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:00,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 15:57:00,854 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:00,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:00,857 INFO L85 PathProgramCache]: Analyzing trace with hash 923003988, now seen corresponding path program 1 times [2024-11-18 15:57:00,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:00,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850984311] [2024-11-18 15:57:00,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:00,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:00,952 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 15:57:00,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:00,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850984311] [2024-11-18 15:57:00,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850984311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:57:00,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:57:00,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:57:00,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519472594] [2024-11-18 15:57:00,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:57:00,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:57:00,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:00,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:57:00,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:57:00,954 INFO L87 Difference]: Start difference. First operand 1352 states and 2264 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:01,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:01,057 INFO L93 Difference]: Finished difference Result 3208 states and 4844 transitions. [2024-11-18 15:57:01,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:57:01,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-18 15:57:01,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:01,065 INFO L225 Difference]: With dead ends: 3208 [2024-11-18 15:57:01,065 INFO L226 Difference]: Without dead ends: 2634 [2024-11-18 15:57:01,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:57:01,067 INFO L432 NwaCegarLoop]: 1551 mSDtfsCounter, 3057 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3057 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:01,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3057 Valid, 3155 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:57:01,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2024-11-18 15:57:01,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1924. [2024-11-18 15:57:01,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1922 states have (on average 1.5879292403746097) internal successors, (3052), 1923 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:01,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 3052 transitions. [2024-11-18 15:57:01,113 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 3052 transitions. Word has length 54 [2024-11-18 15:57:01,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:01,113 INFO L471 AbstractCegarLoop]: Abstraction has 1924 states and 3052 transitions. [2024-11-18 15:57:01,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:01,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 3052 transitions. [2024-11-18 15:57:01,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-18 15:57:01,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:01,115 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:01,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 15:57:01,115 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:01,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:01,115 INFO L85 PathProgramCache]: Analyzing trace with hash -857928876, now seen corresponding path program 1 times [2024-11-18 15:57:01,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:01,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752353087] [2024-11-18 15:57:01,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:01,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 15:57:01,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:01,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752353087] [2024-11-18 15:57:01,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752353087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:57:01,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:57:01,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:57:01,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059444159] [2024-11-18 15:57:01,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:57:01,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:57:01,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:01,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:57:01,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:57:01,233 INFO L87 Difference]: Start difference. First operand 1924 states and 3052 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:01,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:01,339 INFO L93 Difference]: Finished difference Result 3780 states and 5632 transitions. [2024-11-18 15:57:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:57:01,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-18 15:57:01,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:01,350 INFO L225 Difference]: With dead ends: 3780 [2024-11-18 15:57:01,351 INFO L226 Difference]: Without dead ends: 3206 [2024-11-18 15:57:01,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:57:01,354 INFO L432 NwaCegarLoop]: 1552 mSDtfsCounter, 3049 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:01,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3170 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:57:01,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2024-11-18 15:57:01,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 2784. [2024-11-18 15:57:01,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2782 states have (on average 1.518332135154565) internal successors, (4224), 2783 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:01,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4224 transitions. [2024-11-18 15:57:01,428 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4224 transitions. Word has length 54 [2024-11-18 15:57:01,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:01,428 INFO L471 AbstractCegarLoop]: Abstraction has 2784 states and 4224 transitions. [2024-11-18 15:57:01,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:01,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4224 transitions. [2024-11-18 15:57:01,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-18 15:57:01,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:01,429 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:01,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 15:57:01,430 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:01,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:01,430 INFO L85 PathProgramCache]: Analyzing trace with hash 894361900, now seen corresponding path program 1 times [2024-11-18 15:57:01,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:01,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930077772] [2024-11-18 15:57:01,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:01,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:01,500 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:01,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:01,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930077772] [2024-11-18 15:57:01,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930077772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:57:01,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:57:01,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:57:01,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970801113] [2024-11-18 15:57:01,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:57:01,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:57:01,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:01,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:57:01,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:57:01,502 INFO L87 Difference]: Start difference. First operand 2784 states and 4224 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:01,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:01,531 INFO L93 Difference]: Finished difference Result 4260 states and 6287 transitions. [2024-11-18 15:57:01,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:57:01,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-18 15:57:01,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:01,537 INFO L225 Difference]: With dead ends: 4260 [2024-11-18 15:57:01,537 INFO L226 Difference]: Without dead ends: 2254 [2024-11-18 15:57:01,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:57:01,539 INFO L432 NwaCegarLoop]: 1535 mSDtfsCounter, 34 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:01,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:57:01,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2024-11-18 15:57:01,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2252. [2024-11-18 15:57:01,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2250 states have (on average 1.5537777777777777) internal successors, (3496), 2251 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:01,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3496 transitions. [2024-11-18 15:57:01,573 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3496 transitions. Word has length 56 [2024-11-18 15:57:01,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:01,573 INFO L471 AbstractCegarLoop]: Abstraction has 2252 states and 3496 transitions. [2024-11-18 15:57:01,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:01,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3496 transitions. [2024-11-18 15:57:01,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-18 15:57:01,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:01,574 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:01,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 15:57:01,575 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:01,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:01,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1218909775, now seen corresponding path program 1 times [2024-11-18 15:57:01,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:01,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764388674] [2024-11-18 15:57:01,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:01,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 15:57:01,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:01,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764388674] [2024-11-18 15:57:01,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764388674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:57:01,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:57:01,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:57:01,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061432914] [2024-11-18 15:57:01,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:57:01,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:57:01,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:01,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:57:01,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:57:01,640 INFO L87 Difference]: Start difference. First operand 2252 states and 3496 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:01,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:01,712 INFO L93 Difference]: Finished difference Result 3508 states and 5252 transitions. [2024-11-18 15:57:01,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 15:57:01,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-18 15:57:01,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:01,720 INFO L225 Difference]: With dead ends: 3508 [2024-11-18 15:57:01,720 INFO L226 Difference]: Without dead ends: 3090 [2024-11-18 15:57:01,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:57:01,721 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 3051 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:01,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3147 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:57:01,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2024-11-18 15:57:01,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2668. [2024-11-18 15:57:01,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 2666 states have (on average 1.5273818454613652) internal successors, (4072), 2667 states have internal predecessors, (4072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:01,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4072 transitions. [2024-11-18 15:57:01,770 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4072 transitions. Word has length 56 [2024-11-18 15:57:01,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:01,771 INFO L471 AbstractCegarLoop]: Abstraction has 2668 states and 4072 transitions. [2024-11-18 15:57:01,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:01,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4072 transitions. [2024-11-18 15:57:01,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-18 15:57:01,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:01,772 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:01,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 15:57:01,772 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:01,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:01,773 INFO L85 PathProgramCache]: Analyzing trace with hash -877348108, now seen corresponding path program 1 times [2024-11-18 15:57:01,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:01,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897645014] [2024-11-18 15:57:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:01,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:01,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:01,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897645014] [2024-11-18 15:57:01,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897645014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:57:01,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:57:01,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:57:01,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503966011] [2024-11-18 15:57:01,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:57:01,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:57:01,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:01,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:57:01,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:57:01,870 INFO L87 Difference]: Start difference. First operand 2668 states and 4072 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:01,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:01,896 INFO L93 Difference]: Finished difference Result 3608 states and 5370 transitions. [2024-11-18 15:57:01,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:57:01,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-18 15:57:01,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:01,901 INFO L225 Difference]: With dead ends: 3608 [2024-11-18 15:57:01,901 INFO L226 Difference]: Without dead ends: 1734 [2024-11-18 15:57:01,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:57:01,904 INFO L432 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:01,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3016 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:57:01,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2024-11-18 15:57:01,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1732. [2024-11-18 15:57:01,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1730 states have (on average 1.5942196531791908) internal successors, (2758), 1731 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2758 transitions. [2024-11-18 15:57:01,932 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2758 transitions. Word has length 57 [2024-11-18 15:57:01,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:01,932 INFO L471 AbstractCegarLoop]: Abstraction has 1732 states and 2758 transitions. [2024-11-18 15:57:01,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:01,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2758 transitions. [2024-11-18 15:57:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-18 15:57:01,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:01,933 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:01,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 15:57:01,934 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:01,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:01,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511174, now seen corresponding path program 1 times [2024-11-18 15:57:01,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:01,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657356195] [2024-11-18 15:57:01,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:01,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:01,992 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:01,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:01,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657356195] [2024-11-18 15:57:01,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657356195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:57:01,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:57:01,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:57:01,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516006475] [2024-11-18 15:57:01,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:57:01,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:57:01,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:01,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:57:01,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:57:01,993 INFO L87 Difference]: Start difference. First operand 1732 states and 2758 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:02,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:02,013 INFO L93 Difference]: Finished difference Result 2204 states and 3399 transitions. [2024-11-18 15:57:02,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:57:02,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-18 15:57:02,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:02,017 INFO L225 Difference]: With dead ends: 2204 [2024-11-18 15:57:02,018 INFO L226 Difference]: Without dead ends: 1266 [2024-11-18 15:57:02,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:57:02,019 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 26 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:02,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:57:02,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2024-11-18 15:57:02,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1264. [2024-11-18 15:57:02,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1262 states have (on average 1.6719492868462758) internal successors, (2110), 1263 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:02,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2110 transitions. [2024-11-18 15:57:02,043 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2110 transitions. Word has length 59 [2024-11-18 15:57:02,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:02,043 INFO L471 AbstractCegarLoop]: Abstraction has 1264 states and 2110 transitions. [2024-11-18 15:57:02,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:02,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2110 transitions. [2024-11-18 15:57:02,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-18 15:57:02,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:02,048 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:02,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 15:57:02,048 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:02,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:02,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1918634021, now seen corresponding path program 1 times [2024-11-18 15:57:02,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:02,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103919501] [2024-11-18 15:57:02,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:02,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:02,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:02,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103919501] [2024-11-18 15:57:02,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103919501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:57:02,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:57:02,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:57:02,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889385278] [2024-11-18 15:57:02,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:57:02,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:57:02,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:02,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:57:02,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:57:02,153 INFO L87 Difference]: Start difference. First operand 1264 states and 2110 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:06,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:06,622 INFO L93 Difference]: Finished difference Result 3519 states and 6419 transitions. [2024-11-18 15:57:06,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:57:06,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-18 15:57:06,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:06,629 INFO L225 Difference]: With dead ends: 3519 [2024-11-18 15:57:06,629 INFO L226 Difference]: Without dead ends: 2766 [2024-11-18 15:57:06,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:57:06,631 INFO L432 NwaCegarLoop]: 765 mSDtfsCounter, 2325 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5518 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2325 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 6618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:06,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2325 Valid, 783 Invalid, 6618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5518 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-18 15:57:06,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2024-11-18 15:57:06,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2766. [2024-11-18 15:57:06,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 2764 states have (on average 1.5325615050651231) internal successors, (4236), 2765 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:06,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 4236 transitions. [2024-11-18 15:57:06,680 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 4236 transitions. Word has length 60 [2024-11-18 15:57:06,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:06,681 INFO L471 AbstractCegarLoop]: Abstraction has 2766 states and 4236 transitions. [2024-11-18 15:57:06,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:06,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 4236 transitions. [2024-11-18 15:57:06,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-18 15:57:06,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:06,683 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:06,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 15:57:06,684 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:06,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:06,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1826022888, now seen corresponding path program 1 times [2024-11-18 15:57:06,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:06,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771386272] [2024-11-18 15:57:06,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:06,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:07,674 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:07,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:07,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771386272] [2024-11-18 15:57:07,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771386272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:57:07,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197471811] [2024-11-18 15:57:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:07,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:57:07,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:57:07,677 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:57:07,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 15:57:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:07,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 15:57:07,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:57:07,955 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 15:57:07,955 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:57:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 15:57:08,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197471811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:57:08,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:57:08,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-11-18 15:57:08,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502402036] [2024-11-18 15:57:08,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:57:08,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 15:57:08,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:08,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 15:57:08,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-18 15:57:08,097 INFO L87 Difference]: Start difference. First operand 2766 states and 4236 transitions. Second operand has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:09,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:09,687 INFO L93 Difference]: Finished difference Result 5167 states and 7410 transitions. [2024-11-18 15:57:09,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-18 15:57:09,688 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-18 15:57:09,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:09,695 INFO L225 Difference]: With dead ends: 5167 [2024-11-18 15:57:09,696 INFO L226 Difference]: Without dead ends: 4697 [2024-11-18 15:57:09,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=545, Invalid=2535, Unknown=0, NotChecked=0, Total=3080 [2024-11-18 15:57:09,698 INFO L432 NwaCegarLoop]: 1499 mSDtfsCounter, 15751 mSDsluCounter, 7677 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15751 SdHoareTripleChecker+Valid, 9176 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:09,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15751 Valid, 9176 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:57:09,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4697 states. [2024-11-18 15:57:09,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4697 to 4663. [2024-11-18 15:57:09,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4663 states, 4661 states have (on average 1.4119287706500752) internal successors, (6581), 4662 states have internal predecessors, (6581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:09,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4663 states to 4663 states and 6581 transitions. [2024-11-18 15:57:09,816 INFO L78 Accepts]: Start accepts. Automaton has 4663 states and 6581 transitions. Word has length 61 [2024-11-18 15:57:09,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:09,817 INFO L471 AbstractCegarLoop]: Abstraction has 4663 states and 6581 transitions. [2024-11-18 15:57:09,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:09,817 INFO L276 IsEmpty]: Start isEmpty. Operand 4663 states and 6581 transitions. [2024-11-18 15:57:09,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-18 15:57:09,818 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:09,818 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:09,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 15:57:10,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 15:57:10,019 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:10,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:10,020 INFO L85 PathProgramCache]: Analyzing trace with hash 459765187, now seen corresponding path program 1 times [2024-11-18 15:57:10,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:10,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875897752] [2024-11-18 15:57:10,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:10,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:11,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:11,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875897752] [2024-11-18 15:57:11,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875897752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:57:11,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304537230] [2024-11-18 15:57:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:11,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:57:11,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:57:11,262 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:57:11,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 15:57:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:11,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 15:57:11,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:57:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:11,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:57:12,117 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:12,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304537230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:57:12,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:57:12,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-11-18 15:57:12,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343477179] [2024-11-18 15:57:12,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:57:12,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 15:57:12,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:12,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 15:57:12,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-11-18 15:57:12,120 INFO L87 Difference]: Start difference. First operand 4663 states and 6581 transitions. Second operand has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:12,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:12,615 INFO L93 Difference]: Finished difference Result 8770 states and 11771 transitions. [2024-11-18 15:57:12,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 15:57:12,615 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-18 15:57:12,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:12,629 INFO L225 Difference]: With dead ends: 8770 [2024-11-18 15:57:12,629 INFO L226 Difference]: Without dead ends: 6811 [2024-11-18 15:57:12,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 15:57:12,634 INFO L432 NwaCegarLoop]: 1495 mSDtfsCounter, 11997 mSDsluCounter, 4808 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11997 SdHoareTripleChecker+Valid, 6303 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:12,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11997 Valid, 6303 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 15:57:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6811 states. [2024-11-18 15:57:12,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6811 to 6745. [2024-11-18 15:57:12,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6745 states, 6743 states have (on average 1.3510306985021503) internal successors, (9110), 6744 states have internal predecessors, (9110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:12,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6745 states to 6745 states and 9110 transitions. [2024-11-18 15:57:12,763 INFO L78 Accepts]: Start accepts. Automaton has 6745 states and 9110 transitions. Word has length 62 [2024-11-18 15:57:12,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:12,763 INFO L471 AbstractCegarLoop]: Abstraction has 6745 states and 9110 transitions. [2024-11-18 15:57:12,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:12,763 INFO L276 IsEmpty]: Start isEmpty. Operand 6745 states and 9110 transitions. [2024-11-18 15:57:12,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-18 15:57:12,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:12,764 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:12,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 15:57:12,964 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,SelfDestructingSolverStorable17 [2024-11-18 15:57:12,964 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:12,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:12,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1147902773, now seen corresponding path program 1 times [2024-11-18 15:57:12,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:12,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590629620] [2024-11-18 15:57:12,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:12,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:13,198 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:13,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:13,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590629620] [2024-11-18 15:57:13,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590629620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:57:13,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814366553] [2024-11-18 15:57:13,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:13,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:57:13,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:57:13,201 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:57:13,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 15:57:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:13,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 15:57:13,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:57:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:13,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:57:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:14,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814366553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:57:14,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:57:14,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-18 15:57:14,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140144960] [2024-11-18 15:57:14,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:57:14,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 15:57:14,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:14,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 15:57:14,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-11-18 15:57:14,458 INFO L87 Difference]: Start difference. First operand 6745 states and 9110 transitions. Second operand has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:16,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:16,689 INFO L93 Difference]: Finished difference Result 14766 states and 19170 transitions. [2024-11-18 15:57:16,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-18 15:57:16,689 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-18 15:57:16,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:16,703 INFO L225 Difference]: With dead ends: 14766 [2024-11-18 15:57:16,703 INFO L226 Difference]: Without dead ends: 10806 [2024-11-18 15:57:16,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1214, Invalid=5592, Unknown=0, NotChecked=0, Total=6806 [2024-11-18 15:57:16,709 INFO L432 NwaCegarLoop]: 1508 mSDtfsCounter, 21870 mSDsluCounter, 13915 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21870 SdHoareTripleChecker+Valid, 15423 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:16,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21870 Valid, 15423 Invalid, 882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:57:16,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10806 states. [2024-11-18 15:57:16,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10806 to 7404. [2024-11-18 15:57:16,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7404 states, 7402 states have (on average 1.3409889219129965) internal successors, (9926), 7403 states have internal predecessors, (9926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7404 states to 7404 states and 9926 transitions. [2024-11-18 15:57:16,954 INFO L78 Accepts]: Start accepts. Automaton has 7404 states and 9926 transitions. Word has length 62 [2024-11-18 15:57:16,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:16,954 INFO L471 AbstractCegarLoop]: Abstraction has 7404 states and 9926 transitions. [2024-11-18 15:57:16,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:16,954 INFO L276 IsEmpty]: Start isEmpty. Operand 7404 states and 9926 transitions. [2024-11-18 15:57:16,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-18 15:57:16,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:16,955 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:16,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 15:57:17,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:57:17,160 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:17,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:17,160 INFO L85 PathProgramCache]: Analyzing trace with hash 807603108, now seen corresponding path program 1 times [2024-11-18 15:57:17,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:17,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302065089] [2024-11-18 15:57:17,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:17,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:17,380 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:17,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:17,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302065089] [2024-11-18 15:57:17,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302065089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:57:17,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241981412] [2024-11-18 15:57:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:17,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:57:17,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:57:17,383 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:57:17,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 15:57:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:17,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 15:57:17,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:57:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:18,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:57:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:18,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241981412] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:57:18,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:57:18,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2024-11-18 15:57:18,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154089808] [2024-11-18 15:57:18,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:57:18,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 15:57:18,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:18,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 15:57:18,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-11-18 15:57:18,979 INFO L87 Difference]: Start difference. First operand 7404 states and 9926 transitions. Second operand has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:20,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:20,161 INFO L93 Difference]: Finished difference Result 14054 states and 18229 transitions. [2024-11-18 15:57:20,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-18 15:57:20,161 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-18 15:57:20,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:20,175 INFO L225 Difference]: With dead ends: 14054 [2024-11-18 15:57:20,175 INFO L226 Difference]: Without dead ends: 9740 [2024-11-18 15:57:20,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=637, Invalid=2015, Unknown=0, NotChecked=0, Total=2652 [2024-11-18 15:57:20,182 INFO L432 NwaCegarLoop]: 1514 mSDtfsCounter, 15577 mSDsluCounter, 7947 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15577 SdHoareTripleChecker+Valid, 9461 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:20,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15577 Valid, 9461 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:57:20,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9740 states. [2024-11-18 15:57:20,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9740 to 9316. [2024-11-18 15:57:20,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9316 states, 9314 states have (on average 1.3110371483787846) internal successors, (12211), 9315 states have internal predecessors, (12211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:20,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9316 states to 9316 states and 12211 transitions. [2024-11-18 15:57:20,442 INFO L78 Accepts]: Start accepts. Automaton has 9316 states and 12211 transitions. Word has length 63 [2024-11-18 15:57:20,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:20,443 INFO L471 AbstractCegarLoop]: Abstraction has 9316 states and 12211 transitions. [2024-11-18 15:57:20,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:20,443 INFO L276 IsEmpty]: Start isEmpty. Operand 9316 states and 12211 transitions. [2024-11-18 15:57:20,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-18 15:57:20,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:20,443 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:20,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 15:57:20,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:57:20,644 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:20,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:20,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1786741782, now seen corresponding path program 1 times [2024-11-18 15:57:20,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:20,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375298623] [2024-11-18 15:57:20,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:20,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:21,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:21,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375298623] [2024-11-18 15:57:21,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375298623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:57:21,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230042792] [2024-11-18 15:57:21,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:21,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:57:21,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:57:21,627 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) [2024-11-18 15:57:21,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 15:57:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:21,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 15:57:21,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:57:23,814 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:23,815 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:57:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:25,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230042792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:57:25,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:57:25,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 15] total 51 [2024-11-18 15:57:25,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854565357] [2024-11-18 15:57:25,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:57:25,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-18 15:57:25,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:25,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-18 15:57:25,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2024-11-18 15:57:25,164 INFO L87 Difference]: Start difference. First operand 9316 states and 12211 transitions. Second operand has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:40,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:40,239 INFO L93 Difference]: Finished difference Result 16042 states and 20468 transitions. [2024-11-18 15:57:40,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-18 15:57:40,240 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-18 15:57:40,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:40,256 INFO L225 Difference]: With dead ends: 16042 [2024-11-18 15:57:40,256 INFO L226 Difference]: Without dead ends: 13203 [2024-11-18 15:57:40,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5729 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=4031, Invalid=15991, Unknown=0, NotChecked=0, Total=20022 [2024-11-18 15:57:40,263 INFO L432 NwaCegarLoop]: 1536 mSDtfsCounter, 25785 mSDsluCounter, 19298 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25785 SdHoareTripleChecker+Valid, 20834 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:40,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25785 Valid, 20834 Invalid, 2339 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 15:57:40,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13203 states. [2024-11-18 15:57:40,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13203 to 11387. [2024-11-18 15:57:40,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11387 states, 11385 states have (on average 1.2979358805445762) internal successors, (14777), 11386 states have internal predecessors, (14777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:40,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11387 states to 11387 states and 14777 transitions. [2024-11-18 15:57:40,594 INFO L78 Accepts]: Start accepts. Automaton has 11387 states and 14777 transitions. Word has length 63 [2024-11-18 15:57:40,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:40,594 INFO L471 AbstractCegarLoop]: Abstraction has 11387 states and 14777 transitions. [2024-11-18 15:57:40,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:40,595 INFO L276 IsEmpty]: Start isEmpty. Operand 11387 states and 14777 transitions. [2024-11-18 15:57:40,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-18 15:57:40,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:40,595 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:40,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 15:57:40,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:57:40,796 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:40,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:40,796 INFO L85 PathProgramCache]: Analyzing trace with hash 532152701, now seen corresponding path program 1 times [2024-11-18 15:57:40,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:40,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862620494] [2024-11-18 15:57:40,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:40,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:41,525 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:41,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:41,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862620494] [2024-11-18 15:57:41,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862620494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:57:41,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109399672] [2024-11-18 15:57:41,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:41,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:57:41,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:57:41,527 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) [2024-11-18 15:57:41,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 15:57:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:41,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 15:57:41,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:57:42,399 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:42,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:57:42,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:42,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109399672] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:57:42,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:57:42,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 34 [2024-11-18 15:57:42,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635413776] [2024-11-18 15:57:42,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:57:42,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 15:57:42,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:42,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 15:57:42,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 15:57:42,808 INFO L87 Difference]: Start difference. First operand 11387 states and 14777 transitions. Second operand has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:44,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:44,780 INFO L93 Difference]: Finished difference Result 14885 states and 19054 transitions. [2024-11-18 15:57:44,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-18 15:57:44,782 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-18 15:57:44,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:44,792 INFO L225 Difference]: With dead ends: 14885 [2024-11-18 15:57:44,792 INFO L226 Difference]: Without dead ends: 11074 [2024-11-18 15:57:44,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=822, Invalid=2960, Unknown=0, NotChecked=0, Total=3782 [2024-11-18 15:57:44,798 INFO L432 NwaCegarLoop]: 1517 mSDtfsCounter, 15889 mSDsluCounter, 11046 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15889 SdHoareTripleChecker+Valid, 12563 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:44,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15889 Valid, 12563 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:57:44,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11074 states. [2024-11-18 15:57:45,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11074 to 9456. [2024-11-18 15:57:45,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9456 states, 9454 states have (on average 1.3074888935900149) internal successors, (12361), 9455 states have internal predecessors, (12361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:45,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9456 states to 9456 states and 12361 transitions. [2024-11-18 15:57:45,078 INFO L78 Accepts]: Start accepts. Automaton has 9456 states and 12361 transitions. Word has length 64 [2024-11-18 15:57:45,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:45,079 INFO L471 AbstractCegarLoop]: Abstraction has 9456 states and 12361 transitions. [2024-11-18 15:57:45,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:45,079 INFO L276 IsEmpty]: Start isEmpty. Operand 9456 states and 12361 transitions. [2024-11-18 15:57:45,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 15:57:45,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:45,079 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:45,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 15:57:45,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:57:45,280 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:45,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:45,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1624666796, now seen corresponding path program 1 times [2024-11-18 15:57:45,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:45,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789991825] [2024-11-18 15:57:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:45,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:46,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:46,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789991825] [2024-11-18 15:57:46,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789991825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:57:46,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368154692] [2024-11-18 15:57:46,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:46,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:57:46,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:57:46,553 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) [2024-11-18 15:57:46,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 15:57:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:46,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 15:57:46,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:57:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:47,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:57:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:47,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368154692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:57:47,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:57:47,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 12] total 42 [2024-11-18 15:57:47,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901562661] [2024-11-18 15:57:47,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:57:47,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-18 15:57:47,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:47,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-18 15:57:47,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 15:57:47,940 INFO L87 Difference]: Start difference. First operand 9456 states and 12361 transitions. Second operand has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:55,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:55,290 INFO L93 Difference]: Finished difference Result 23366 states and 29411 transitions. [2024-11-18 15:57:55,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-18 15:57:55,290 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-18 15:57:55,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:55,310 INFO L225 Difference]: With dead ends: 23366 [2024-11-18 15:57:55,311 INFO L226 Difference]: Without dead ends: 18935 [2024-11-18 15:57:55,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=2435, Invalid=9121, Unknown=0, NotChecked=0, Total=11556 [2024-11-18 15:57:55,318 INFO L432 NwaCegarLoop]: 1583 mSDtfsCounter, 19829 mSDsluCounter, 27564 mSDsCounter, 0 mSdLazyCounter, 2672 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19829 SdHoareTripleChecker+Valid, 29147 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:55,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19829 Valid, 29147 Invalid, 2751 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 2672 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 15:57:55,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18935 states. [2024-11-18 15:57:55,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18935 to 6613. [2024-11-18 15:57:55,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6613 states, 6611 states have (on average 1.3477537437603992) internal successors, (8910), 6612 states have internal predecessors, (8910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6613 states to 6613 states and 8910 transitions. [2024-11-18 15:57:55,583 INFO L78 Accepts]: Start accepts. Automaton has 6613 states and 8910 transitions. Word has length 65 [2024-11-18 15:57:55,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:55,583 INFO L471 AbstractCegarLoop]: Abstraction has 6613 states and 8910 transitions. [2024-11-18 15:57:55,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:55,584 INFO L276 IsEmpty]: Start isEmpty. Operand 6613 states and 8910 transitions. [2024-11-18 15:57:55,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-18 15:57:55,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:55,585 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:55,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 15:57:55,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:57:55,785 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:55,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:55,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1065912349, now seen corresponding path program 1 times [2024-11-18 15:57:55,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:55,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113233962] [2024-11-18 15:57:55,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:55,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:56,321 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:56,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:57:56,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113233962] [2024-11-18 15:57:56,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113233962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:57:56,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956055493] [2024-11-18 15:57:56,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:56,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:57:56,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:57:56,324 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:57:56,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 15:57:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:57:56,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 15:57:56,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:57:56,924 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 33 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:56,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:57:57,948 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:57:57,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956055493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:57:57,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:57:57,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-18 15:57:57,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132863718] [2024-11-18 15:57:57,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:57:57,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 15:57:57,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:57:57,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 15:57:57,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2024-11-18 15:57:57,950 INFO L87 Difference]: Start difference. First operand 6613 states and 8910 transitions. Second operand has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:57:58,932 INFO L93 Difference]: Finished difference Result 16183 states and 20838 transitions. [2024-11-18 15:57:58,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 15:57:58,932 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-18 15:57:58,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:57:58,942 INFO L225 Difference]: With dead ends: 16183 [2024-11-18 15:57:58,942 INFO L226 Difference]: Without dead ends: 12184 [2024-11-18 15:57:58,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 15:57:58,946 INFO L432 NwaCegarLoop]: 1516 mSDtfsCounter, 10477 mSDsluCounter, 12122 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10477 SdHoareTripleChecker+Valid, 13638 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:57:58,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10477 Valid, 13638 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 15:57:58,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12184 states. [2024-11-18 15:57:59,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12184 to 11364. [2024-11-18 15:57:59,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11364 states, 11362 states have (on average 1.288241506776976) internal successors, (14637), 11363 states have internal predecessors, (14637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:59,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11364 states to 11364 states and 14637 transitions. [2024-11-18 15:57:59,427 INFO L78 Accepts]: Start accepts. Automaton has 11364 states and 14637 transitions. Word has length 103 [2024-11-18 15:57:59,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:57:59,428 INFO L471 AbstractCegarLoop]: Abstraction has 11364 states and 14637 transitions. [2024-11-18 15:57:59,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:57:59,428 INFO L276 IsEmpty]: Start isEmpty. Operand 11364 states and 14637 transitions. [2024-11-18 15:57:59,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-18 15:57:59,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:57:59,431 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:57:59,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 15:57:59,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-18 15:57:59,632 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:57:59,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:57:59,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1754049935, now seen corresponding path program 1 times [2024-11-18 15:57:59,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:57:59,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53898817] [2024-11-18 15:57:59,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:57:59,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:57:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:58:00,083 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:58:00,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:58:00,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53898817] [2024-11-18 15:58:00,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53898817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:58:00,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334992662] [2024-11-18 15:58:00,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:58:00,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:58:00,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:58:00,084 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:58:00,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 15:58:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:58:00,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 15:58:00,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:58:00,712 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 38 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:58:00,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:58:01,660 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:58:01,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334992662] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:58:01,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:58:01,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-18 15:58:01,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363720940] [2024-11-18 15:58:01,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:58:01,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 15:58:01,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:58:01,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 15:58:01,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2024-11-18 15:58:01,662 INFO L87 Difference]: Start difference. First operand 11364 states and 14637 transitions. Second operand has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:58:02,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:58:02,553 INFO L93 Difference]: Finished difference Result 16074 states and 20401 transitions. [2024-11-18 15:58:02,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 15:58:02,554 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-18 15:58:02,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:58:02,564 INFO L225 Difference]: With dead ends: 16074 [2024-11-18 15:58:02,564 INFO L226 Difference]: Without dead ends: 10362 [2024-11-18 15:58:02,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2024-11-18 15:58:02,570 INFO L432 NwaCegarLoop]: 1515 mSDtfsCounter, 17824 mSDsluCounter, 12096 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17824 SdHoareTripleChecker+Valid, 13611 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:58:02,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17824 Valid, 13611 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 15:58:02,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10362 states. [2024-11-18 15:58:03,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10362 to 10270. [2024-11-18 15:58:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10270 states, 10268 states have (on average 1.2877873003506037) internal successors, (13223), 10269 states have internal predecessors, (13223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:58:03,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10270 states to 10270 states and 13223 transitions. [2024-11-18 15:58:03,033 INFO L78 Accepts]: Start accepts. Automaton has 10270 states and 13223 transitions. Word has length 103 [2024-11-18 15:58:03,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:58:03,033 INFO L471 AbstractCegarLoop]: Abstraction has 10270 states and 13223 transitions. [2024-11-18 15:58:03,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:58:03,034 INFO L276 IsEmpty]: Start isEmpty. Operand 10270 states and 13223 transitions. [2024-11-18 15:58:03,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 15:58:03,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:58:03,035 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:58:03,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 15:58:03,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-18 15:58:03,236 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:58:03,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:58:03,237 INFO L85 PathProgramCache]: Analyzing trace with hash 856710688, now seen corresponding path program 1 times [2024-11-18 15:58:03,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:58:03,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411150464] [2024-11-18 15:58:03,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:58:03,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:58:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:58:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 15:58:04,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:58:04,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411150464] [2024-11-18 15:58:04,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411150464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:58:04,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146833604] [2024-11-18 15:58:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:58:04,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:58:04,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:58:04,082 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:58:04,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 15:58:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:58:04,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-18 15:58:04,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:58:05,295 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:58:05,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 15:58:07,868 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:58:07,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146833604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 15:58:07,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 15:58:07,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2024-11-18 15:58:07,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745153955] [2024-11-18 15:58:07,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 15:58:07,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-18 15:58:07,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:58:07,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-18 15:58:07,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2423, Unknown=0, NotChecked=0, Total=2652 [2024-11-18 15:58:07,870 INFO L87 Difference]: Start difference. First operand 10270 states and 13223 transitions. Second operand has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:58:15,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:58:15,013 INFO L93 Difference]: Finished difference Result 15968 states and 20092 transitions. [2024-11-18 15:58:15,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-18 15:58:15,014 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-18 15:58:15,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:58:15,024 INFO L225 Difference]: With dead ends: 15968 [2024-11-18 15:58:15,025 INFO L226 Difference]: Without dead ends: 10438 [2024-11-18 15:58:15,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3017 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1975, Invalid=10907, Unknown=0, NotChecked=0, Total=12882 [2024-11-18 15:58:15,028 INFO L432 NwaCegarLoop]: 1509 mSDtfsCounter, 26037 mSDsluCounter, 29098 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26037 SdHoareTripleChecker+Valid, 30607 SdHoareTripleChecker+Invalid, 2104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:58:15,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26037 Valid, 30607 Invalid, 2104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [114 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 15:58:15,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10438 states. [2024-11-18 15:58:15,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10438 to 9954. [2024-11-18 15:58:15,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9954 states, 9952 states have (on average 1.291298231511254) internal successors, (12851), 9953 states have internal predecessors, (12851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:58:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9954 states to 9954 states and 12851 transitions. [2024-11-18 15:58:15,497 INFO L78 Accepts]: Start accepts. Automaton has 9954 states and 12851 transitions. Word has length 104 [2024-11-18 15:58:15,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:58:15,497 INFO L471 AbstractCegarLoop]: Abstraction has 9954 states and 12851 transitions. [2024-11-18 15:58:15,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 15:58:15,497 INFO L276 IsEmpty]: Start isEmpty. Operand 9954 states and 12851 transitions. [2024-11-18 15:58:15,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 15:58:15,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:58:15,499 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:58:15,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 15:58:15,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-18 15:58:15,700 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:58:15,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:58:15,700 INFO L85 PathProgramCache]: Analyzing trace with hash 15634770, now seen corresponding path program 1 times [2024-11-18 15:58:15,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:58:15,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311075538] [2024-11-18 15:58:15,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:58:15,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:58:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:58:16,253 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:58:16,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:58:16,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311075538] [2024-11-18 15:58:16,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311075538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:58:16,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510826661] [2024-11-18 15:58:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:58:16,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:58:16,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:58:16,255 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:58:16,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 15:58:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:58:16,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-18 15:58:16,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:58:17,073 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:58:17,074 INFO L311 TraceCheckSpWp]: Computing backward predicates...