./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/condm.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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/array-fpi/condm.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 6f961be2104ef3ac444088284f7936b105cc31dfbd8617bc6896bf1b51a5f23d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 15:50:54,374 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 15:50:54,422 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 15:50:54,425 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 15:50:54,427 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 15:50:54,449 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 15:50:54,450 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 15:50:54,450 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 15:50:54,451 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 15:50:54,453 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 15:50:54,454 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 15:50:54,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 15:50:54,454 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 15:50:54,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 15:50:54,455 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 15:50:54,455 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 15:50:54,455 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 15:50:54,456 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 15:50:54,457 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 15:50:54,457 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 15:50:54,457 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 15:50:54,457 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 15:50:54,458 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 15:50:54,458 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 15:50:54,458 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 15:50:54,458 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 15:50:54,458 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 15:50:54,459 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 15:50:54,459 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 15:50:54,459 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 15:50:54,459 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 15:50:54,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 15:50:54,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:50:54,460 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 15:50:54,460 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 15:50:54,460 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 15:50:54,460 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 15:50:54,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 15:50:54,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 15:50:54,460 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 15:50:54,461 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 15:50:54,462 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 15:50:54,462 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f961be2104ef3ac444088284f7936b105cc31dfbd8617bc6896bf1b51a5f23d [2024-11-11 15:50:54,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 15:50:54,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 15:50:54,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 15:50:54,672 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 15:50:54,672 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 15:50:54,673 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/condm.c [2024-11-11 15:50:55,867 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 15:50:55,993 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 15:50:55,994 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/condm.c [2024-11-11 15:50:56,002 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffabec8d6/f399ad9bc22544f4ab659d96a0d0d7e6/FLAGe673c9eab [2024-11-11 15:50:56,414 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffabec8d6/f399ad9bc22544f4ab659d96a0d0d7e6 [2024-11-11 15:50:56,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 15:50:56,417 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 15:50:56,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 15:50:56,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 15:50:56,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 15:50:56,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:50:56" (1/1) ... [2024-11-11 15:50:56,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e6ec433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:50:56, skipping insertion in model container [2024-11-11 15:50:56,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:50:56" (1/1) ... [2024-11-11 15:50:56,438 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 15:50:56,574 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/array-fpi/condm.c[588,601] [2024-11-11 15:50:56,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:50:56,621 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 15:50:56,632 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/array-fpi/condm.c[588,601] [2024-11-11 15:50:56,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:50:56,666 INFO L204 MainTranslator]: Completed translation [2024-11-11 15:50:56,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:50:56 WrapperNode [2024-11-11 15:50:56,666 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 15:50:56,667 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 15:50:56,667 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 15:50:56,667 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 15:50:56,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:50:56" (1/1) ... [2024-11-11 15:50:56,676 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:50:56" (1/1) ... [2024-11-11 15:50:56,691 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2024-11-11 15:50:56,691 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 15:50:56,692 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 15:50:56,692 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 15:50:56,692 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 15:50:56,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:50:56" (1/1) ... [2024-11-11 15:50:56,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:50:56" (1/1) ... [2024-11-11 15:50:56,701 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:50:56" (1/1) ... [2024-11-11 15:50:56,713 INFO L175 MemorySlicer]: Split 16 memory accesses to 3 slices as follows [2, 8, 6]. 50 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 3 writes are split as follows [0, 0, 3]. [2024-11-11 15:50:56,714 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:50:56" (1/1) ... [2024-11-11 15:50:56,714 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:50:56" (1/1) ... [2024-11-11 15:50:56,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:50:56" (1/1) ... [2024-11-11 15:50:56,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:50:56" (1/1) ... [2024-11-11 15:50:56,720 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:50:56" (1/1) ... [2024-11-11 15:50:56,720 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:50:56" (1/1) ... [2024-11-11 15:50:56,722 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 15:50:56,725 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 15:50:56,725 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 15:50:56,725 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 15:50:56,726 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:50:56" (1/1) ... [2024-11-11 15:50:56,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:50:56,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:50:56,750 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) [2024-11-11 15:50:56,755 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 [2024-11-11 15:50:56,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 15:50:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 15:50:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-11 15:50:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-11 15:50:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-11 15:50:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-11 15:50:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-11 15:50:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-11 15:50:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 15:50:56,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 15:50:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-11 15:50:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-11 15:50:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-11 15:50:56,855 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 15:50:56,856 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 15:50:56,969 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-11 15:50:56,969 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 15:50:56,977 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 15:50:56,977 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-11 15:50:56,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:50:56 BoogieIcfgContainer [2024-11-11 15:50:56,978 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 15:50:56,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 15:50:56,979 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 15:50:56,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 15:50:56,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 03:50:56" (1/3) ... [2024-11-11 15:50:56,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696fb753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:50:56, skipping insertion in model container [2024-11-11 15:50:56,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:50:56" (2/3) ... [2024-11-11 15:50:56,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696fb753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:50:56, skipping insertion in model container [2024-11-11 15:50:56,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:50:56" (3/3) ... [2024-11-11 15:50:56,984 INFO L112 eAbstractionObserver]: Analyzing ICFG condm.c [2024-11-11 15:50:56,996 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 15:50:56,996 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 15:50:57,032 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 15:50:57,037 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;@534a20e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 15:50:57,037 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 15:50:57,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 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) [2024-11-11 15:50:57,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-11 15:50:57,043 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:50:57,044 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:50:57,044 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:50:57,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:50:57,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1828392228, now seen corresponding path program 1 times [2024-11-11 15:50:57,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:50:57,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002225795] [2024-11-11 15:50:57,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:50:57,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:50:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:50:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:50:57,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:50:57,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002225795] [2024-11-11 15:50:57,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002225795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:50:57,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:50:57,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 15:50:57,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356990886] [2024-11-11 15:50:57,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:50:57,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-11 15:50:57,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:50:57,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-11 15:50:57,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 15:50:57,189 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-11 15:50:57,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:50:57,201 INFO L93 Difference]: Finished difference Result 40 states and 56 transitions. [2024-11-11 15:50:57,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-11 15:50:57,202 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2024-11-11 15:50:57,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:50:57,207 INFO L225 Difference]: With dead ends: 40 [2024-11-11 15:50:57,207 INFO L226 Difference]: Without dead ends: 18 [2024-11-11 15:50:57,209 INFO L434 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 [2024-11-11 15:50:57,211 INFO L435 NwaCegarLoop]: 26 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, 26 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 [2024-11-11 15:50:57,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:50:57,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-11 15:50:57,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-11 15:50:57,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 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) [2024-11-11 15:50:57,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-11-11 15:50:57,232 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2024-11-11 15:50:57,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:50:57,232 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-11-11 15:50:57,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-11 15:50:57,232 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-11 15:50:57,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-11 15:50:57,233 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:50:57,233 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:50:57,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 15:50:57,233 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:50:57,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:50:57,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1148333858, now seen corresponding path program 1 times [2024-11-11 15:50:57,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:50:57,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033702258] [2024-11-11 15:50:57,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:50:57,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:50:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:50:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:50:57,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:50:57,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033702258] [2024-11-11 15:50:57,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033702258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:50:57,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:50:57,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 15:50:57,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963741670] [2024-11-11 15:50:57,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:50:57,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 15:50:57,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:50:57,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 15:50:57,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 15:50:57,373 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-11 15:50:57,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:50:57,428 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-11-11 15:50:57,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 15:50:57,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2024-11-11 15:50:57,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:50:57,429 INFO L225 Difference]: With dead ends: 40 [2024-11-11 15:50:57,429 INFO L226 Difference]: Without dead ends: 29 [2024-11-11 15:50:57,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 15:50:57,430 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 26 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:50:57,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 15 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:50:57,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-11 15:50:57,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2024-11-11 15:50:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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) [2024-11-11 15:50:57,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-11 15:50:57,439 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2024-11-11 15:50:57,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:50:57,439 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-11 15:50:57,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-11 15:50:57,439 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-11 15:50:57,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-11 15:50:57,440 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:50:57,440 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:50:57,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 15:50:57,440 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:50:57,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:50:57,441 INFO L85 PathProgramCache]: Analyzing trace with hash -2142875084, now seen corresponding path program 1 times [2024-11-11 15:50:57,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:50:57,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013581468] [2024-11-11 15:50:57,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:50:57,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:50:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:50:57,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:50:57,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:50:57,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013581468] [2024-11-11 15:50:57,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013581468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:50:57,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068367144] [2024-11-11 15:50:57,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:50:57,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:50:57,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:50:57,807 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) [2024-11-11 15:50:57,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 15:50:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:50:57,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-11 15:50:57,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:50:57,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:50:58,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-11 15:50:58,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:50:58,168 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:50:58,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-11 15:50:58,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-11 15:50:58,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-11 15:50:58,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-11 15:50:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:50:58,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068367144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:50:58,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:50:58,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 19 [2024-11-11 15:50:58,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972244771] [2024-11-11 15:50:58,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:50:58,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-11 15:50:58,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:50:58,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-11 15:50:58,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2024-11-11 15:50:58,739 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 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) [2024-11-11 15:50:59,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:50:59,354 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2024-11-11 15:50:59,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-11 15:50:59,354 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 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 17 [2024-11-11 15:50:59,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:50:59,355 INFO L225 Difference]: With dead ends: 75 [2024-11-11 15:50:59,355 INFO L226 Difference]: Without dead ends: 65 [2024-11-11 15:50:59,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=275, Invalid=717, Unknown=0, NotChecked=0, Total=992 [2024-11-11 15:50:59,357 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 311 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:50:59,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 76 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:50:59,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-11 15:50:59,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 37. [2024-11-11 15:50:59,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 states have internal predecessors, (44), 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) [2024-11-11 15:50:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2024-11-11 15:50:59,369 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 17 [2024-11-11 15:50:59,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:50:59,369 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2024-11-11 15:50:59,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 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) [2024-11-11 15:50:59,369 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2024-11-11 15:50:59,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-11 15:50:59,371 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:50:59,372 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:50:59,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 15:50:59,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:50:59,573 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:50:59,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:50:59,575 INFO L85 PathProgramCache]: Analyzing trace with hash -596215012, now seen corresponding path program 1 times [2024-11-11 15:50:59,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:50:59,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462759771] [2024-11-11 15:50:59,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:50:59,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:50:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:50:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:50:59,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:50:59,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462759771] [2024-11-11 15:50:59,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462759771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:50:59,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882183372] [2024-11-11 15:50:59,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:50:59,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:50:59,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:50:59,670 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) [2024-11-11 15:50:59,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 15:50:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:50:59,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-11 15:50:59,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:50:59,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:50:59,756 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:50:59,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:50:59,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882183372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:50:59,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:50:59,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-11 15:50:59,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334558902] [2024-11-11 15:50:59,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:50:59,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-11 15:50:59,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:50:59,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-11 15:50:59,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-11 15:50:59,786 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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) [2024-11-11 15:50:59,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:50:59,856 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2024-11-11 15:50:59,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-11 15:50:59,857 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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 [2024-11-11 15:50:59,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:50:59,858 INFO L225 Difference]: With dead ends: 71 [2024-11-11 15:50:59,859 INFO L226 Difference]: Without dead ends: 50 [2024-11-11 15:50:59,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-11 15:50:59,859 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:50:59,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 46 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:50:59,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-11 15:50:59,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 34. [2024-11-11 15:50:59,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 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) [2024-11-11 15:50:59,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-11 15:50:59,867 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 20 [2024-11-11 15:50:59,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:50:59,868 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-11 15:50:59,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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) [2024-11-11 15:50:59,868 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-11 15:50:59,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-11 15:50:59,869 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:50:59,869 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:50:59,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-11 15:51:00,069 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,SelfDestructingSolverStorable3 [2024-11-11 15:51:00,071 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:51:00,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:51:00,071 INFO L85 PathProgramCache]: Analyzing trace with hash -408404582, now seen corresponding path program 2 times [2024-11-11 15:51:00,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:51:00,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291138398] [2024-11-11 15:51:00,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:51:00,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:51:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:51:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-11 15:51:00,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:51:00,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291138398] [2024-11-11 15:51:00,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291138398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:51:00,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51898997] [2024-11-11 15:51:00,345 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:51:00,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:51:00,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:51:00,347 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) [2024-11-11 15:51:00,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 15:51:00,399 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:51:00,400 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:51:00,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-11 15:51:00,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:51:00,462 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-11 15:51:00,462 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:51:00,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-11 15:51:00,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51898997] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:51:00,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:51:00,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-11 15:51:00,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150694933] [2024-11-11 15:51:00,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:51:00,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-11 15:51:00,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:51:00,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-11 15:51:00,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2024-11-11 15:51:00,529 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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) [2024-11-11 15:51:00,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:51:00,766 INFO L93 Difference]: Finished difference Result 149 states and 168 transitions. [2024-11-11 15:51:00,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-11 15:51:00,767 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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 22 [2024-11-11 15:51:00,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:51:00,767 INFO L225 Difference]: With dead ends: 149 [2024-11-11 15:51:00,768 INFO L226 Difference]: Without dead ends: 128 [2024-11-11 15:51:00,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=429, Unknown=0, NotChecked=0, Total=650 [2024-11-11 15:51:00,769 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 224 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:51:00,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 125 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:51:00,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-11 15:51:00,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 66. [2024-11-11 15:51:00,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 65 states have internal predecessors, (76), 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) [2024-11-11 15:51:00,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2024-11-11 15:51:00,782 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 22 [2024-11-11 15:51:00,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:51:00,782 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2024-11-11 15:51:00,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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) [2024-11-11 15:51:00,783 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2024-11-11 15:51:00,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-11 15:51:00,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:51:00,783 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:51:00,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-11 15:51:00,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:51:00,985 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:51:00,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:51:00,985 INFO L85 PathProgramCache]: Analyzing trace with hash -311207784, now seen corresponding path program 3 times [2024-11-11 15:51:00,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:51:00,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397893784] [2024-11-11 15:51:00,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:51:00,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:51:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:51:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:51:01,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:51:01,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397893784] [2024-11-11 15:51:01,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397893784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:51:01,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70217458] [2024-11-11 15:51:01,076 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:51:01,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:51:01,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:51:01,078 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) [2024-11-11 15:51:01,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 15:51:01,126 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-11 15:51:01,126 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:51:01,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-11 15:51:01,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:51:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 15:51:01,232 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:51:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-11 15:51:01,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70217458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:51:01,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:51:01,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 20 [2024-11-11 15:51:01,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050558890] [2024-11-11 15:51:01,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:51:01,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-11 15:51:01,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:51:01,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-11 15:51:01,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2024-11-11 15:51:01,294 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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) [2024-11-11 15:51:01,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:51:01,681 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2024-11-11 15:51:01,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-11 15:51:01,681 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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 24 [2024-11-11 15:51:01,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:51:01,682 INFO L225 Difference]: With dead ends: 118 [2024-11-11 15:51:01,682 INFO L226 Difference]: Without dead ends: 98 [2024-11-11 15:51:01,683 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=364, Invalid=1196, Unknown=0, NotChecked=0, Total=1560 [2024-11-11 15:51:01,683 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 238 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:51:01,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 111 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:51:01,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-11 15:51:01,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 72. [2024-11-11 15:51:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1267605633802817) internal successors, (80), 71 states have internal predecessors, (80), 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) [2024-11-11 15:51:01,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2024-11-11 15:51:01,690 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 24 [2024-11-11 15:51:01,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:51:01,694 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2024-11-11 15:51:01,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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) [2024-11-11 15:51:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2024-11-11 15:51:01,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-11 15:51:01,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:51:01,695 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:51:01,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-11 15:51:01,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:51:01,896 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:51:01,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:51:01,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1394926352, now seen corresponding path program 1 times [2024-11-11 15:51:01,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:51:01,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542008830] [2024-11-11 15:51:01,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:51:01,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:51:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:51:02,616 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:51:02,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:51:02,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542008830] [2024-11-11 15:51:02,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542008830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:51:02,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136777111] [2024-11-11 15:51:02,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:51:02,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:51:02,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:51:02,619 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) [2024-11-11 15:51:02,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 15:51:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:51:02,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-11 15:51:02,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:51:02,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:51:02,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-11 15:51:02,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:02,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-11 15:51:02,869 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:02,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-11 15:51:03,083 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:51:03,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:51:04,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 96 [2024-11-11 15:51:04,135 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:04,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 155 [2024-11-11 15:51:04,191 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:51:04,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136777111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:51:04,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:51:04,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 39 [2024-11-11 15:51:04,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972460130] [2024-11-11 15:51:04,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:51:04,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-11 15:51:04,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:51:04,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-11 15:51:04,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1180, Unknown=0, NotChecked=0, Total=1482 [2024-11-11 15:51:04,193 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 39 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 39 states have internal predecessors, (68), 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) [2024-11-11 15:51:06,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:51:06,626 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2024-11-11 15:51:06,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-11 15:51:06,626 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 39 states have internal predecessors, (68), 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 26 [2024-11-11 15:51:06,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:51:06,627 INFO L225 Difference]: With dead ends: 112 [2024-11-11 15:51:06,627 INFO L226 Difference]: Without dead ends: 95 [2024-11-11 15:51:06,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=722, Invalid=2584, Unknown=0, NotChecked=0, Total=3306 [2024-11-11 15:51:06,629 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 231 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-11 15:51:06,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 148 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-11 15:51:06,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-11 15:51:06,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 61. [2024-11-11 15:51:06,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 60 states have internal predecessors, (68), 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) [2024-11-11 15:51:06,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2024-11-11 15:51:06,644 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 26 [2024-11-11 15:51:06,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:51:06,644 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2024-11-11 15:51:06,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 39 states have internal predecessors, (68), 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) [2024-11-11 15:51:06,644 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2024-11-11 15:51:06,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-11 15:51:06,645 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:51:06,645 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:51:06,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-11 15:51:06,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:51:06,845 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:51:06,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:51:06,846 INFO L85 PathProgramCache]: Analyzing trace with hash -562149382, now seen corresponding path program 4 times [2024-11-11 15:51:06,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:51:06,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171284735] [2024-11-11 15:51:06,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:51:06,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:51:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:51:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:51:07,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:51:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171284735] [2024-11-11 15:51:07,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171284735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:51:07,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26344998] [2024-11-11 15:51:07,860 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:51:07,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:51:07,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:51:07,861 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) [2024-11-11 15:51:07,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-11 15:51:07,902 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:51:07,902 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:51:07,903 WARN L254 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-11 15:51:07,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:51:07,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-11 15:51:07,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-11 15:51:07,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-11 15:51:08,346 INFO L349 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2024-11-11 15:51:08,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 37 [2024-11-11 15:51:08,445 INFO L349 Elim1Store]: treesize reduction 36, result has 25.0 percent of original size [2024-11-11 15:51:08,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 35 [2024-11-11 15:51:08,576 INFO L349 Elim1Store]: treesize reduction 32, result has 33.3 percent of original size [2024-11-11 15:51:08,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 39 [2024-11-11 15:51:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:51:08,757 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:51:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:51:09,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26344998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:51:09,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:51:09,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 19] total 49 [2024-11-11 15:51:09,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313620556] [2024-11-11 15:51:09,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:51:09,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-11 15:51:09,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:51:09,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-11 15:51:09,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=2018, Unknown=1, NotChecked=0, Total=2352 [2024-11-11 15:51:09,686 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 49 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 49 states have internal predecessors, (71), 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) [2024-11-11 15:51:22,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:51:22,857 INFO L93 Difference]: Finished difference Result 327 states and 348 transitions. [2024-11-11 15:51:22,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-11-11 15:51:22,857 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 49 states have internal predecessors, (71), 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 27 [2024-11-11 15:51:22,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:51:22,858 INFO L225 Difference]: With dead ends: 327 [2024-11-11 15:51:22,858 INFO L226 Difference]: Without dead ends: 303 [2024-11-11 15:51:22,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8739 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=3729, Invalid=22351, Unknown=2, NotChecked=0, Total=26082 [2024-11-11 15:51:22,864 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 939 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:51:22,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 429 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-11 15:51:22,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-11 15:51:22,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 85. [2024-11-11 15:51:22,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 84 states have internal predecessors, (96), 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) [2024-11-11 15:51:22,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2024-11-11 15:51:22,887 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 27 [2024-11-11 15:51:22,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:51:22,888 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2024-11-11 15:51:22,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 49 states have internal predecessors, (71), 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) [2024-11-11 15:51:22,889 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2024-11-11 15:51:22,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-11 15:51:22,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:51:22,890 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:51:22,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-11 15:51:23,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:51:23,090 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:51:23,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:51:23,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1857271344, now seen corresponding path program 1 times [2024-11-11 15:51:23,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:51:23,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999699990] [2024-11-11 15:51:23,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:51:23,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:51:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:51:23,978 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:51:23,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:51:23,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999699990] [2024-11-11 15:51:23,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999699990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:51:23,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807102467] [2024-11-11 15:51:23,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:51:23,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:51:23,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:51:23,980 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) [2024-11-11 15:51:23,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-11 15:51:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:51:24,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-11 15:51:24,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:51:24,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:51:24,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-11 15:51:24,139 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:24,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2024-11-11 15:51:24,202 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:24,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-11 15:51:24,280 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:24,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-11 15:51:24,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:24,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2024-11-11 15:51:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:51:24,524 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:51:27,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 102 [2024-11-11 15:51:27,225 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:27,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1329 treesize of output 1305 [2024-11-11 15:51:27,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 98 [2024-11-11 15:51:27,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:27,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 720 treesize of output 1 [2024-11-11 15:51:27,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 98 [2024-11-11 15:51:27,314 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:27,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 630 treesize of output 614 [2024-11-11 15:51:27,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 95 [2024-11-11 15:51:27,332 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:27,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 525 treesize of output 513 [2024-11-11 15:51:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:51:27,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807102467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:51:27,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:51:27,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 19] total 50 [2024-11-11 15:51:27,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112364273] [2024-11-11 15:51:27,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:51:27,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-11 15:51:27,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:51:27,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-11 15:51:27,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=2123, Unknown=0, NotChecked=0, Total=2450 [2024-11-11 15:51:27,394 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand has 50 states, 50 states have (on average 1.66) internal successors, (83), 50 states have internal predecessors, (83), 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) [2024-11-11 15:51:44,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:51:44,663 INFO L93 Difference]: Finished difference Result 146 states and 161 transitions. [2024-11-11 15:51:44,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-11 15:51:44,664 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.66) internal successors, (83), 50 states have internal predecessors, (83), 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 31 [2024-11-11 15:51:44,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:51:44,664 INFO L225 Difference]: With dead ends: 146 [2024-11-11 15:51:44,664 INFO L226 Difference]: Without dead ends: 144 [2024-11-11 15:51:44,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=1224, Invalid=7148, Unknown=0, NotChecked=0, Total=8372 [2024-11-11 15:51:44,666 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 292 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-11 15:51:44,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 365 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-11 15:51:44,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-11 15:51:44,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 63. [2024-11-11 15:51:44,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1290322580645162) internal successors, (70), 62 states have internal predecessors, (70), 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) [2024-11-11 15:51:44,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2024-11-11 15:51:44,688 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 31 [2024-11-11 15:51:44,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:51:44,688 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2024-11-11 15:51:44,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.66) internal successors, (83), 50 states have internal predecessors, (83), 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) [2024-11-11 15:51:44,688 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2024-11-11 15:51:44,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-11 15:51:44,688 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:51:44,688 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:51:44,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-11 15:51:44,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:51:44,889 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:51:44,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:51:44,889 INFO L85 PathProgramCache]: Analyzing trace with hash -310699674, now seen corresponding path program 2 times [2024-11-11 15:51:44,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:51:44,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589465406] [2024-11-11 15:51:44,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:51:44,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:51:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:51:45,751 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:51:45,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:51:45,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589465406] [2024-11-11 15:51:45,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589465406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:51:45,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841031087] [2024-11-11 15:51:45,751 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:51:45,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:51:45,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:51:45,754 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) [2024-11-11 15:51:45,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-11 15:51:45,819 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:51:45,819 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:51:45,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-11 15:51:45,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:51:45,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:51:45,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-11 15:51:45,972 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:45,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2024-11-11 15:51:46,052 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:46,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-11 15:51:46,124 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:46,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-11 15:51:46,415 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:51:46,415 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:51:48,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 63 [2024-11-11 15:51:48,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:48,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 58 [2024-11-11 15:51:48,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 67 [2024-11-11 15:51:48,390 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:48,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 49 [2024-11-11 15:51:48,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 82 [2024-11-11 15:51:48,401 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:48,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 126 [2024-11-11 15:51:48,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 78 [2024-11-11 15:51:48,422 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:48,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 1 [2024-11-11 15:51:48,510 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:51:48,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841031087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:51:48,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:51:48,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 50 [2024-11-11 15:51:48,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639263894] [2024-11-11 15:51:48,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:51:48,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-11 15:51:48,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:51:48,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-11 15:51:48,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=2107, Unknown=0, NotChecked=0, Total=2450 [2024-11-11 15:51:48,512 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand has 50 states, 50 states have (on average 1.86) internal successors, (93), 50 states have internal predecessors, (93), 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) [2024-11-11 15:51:57,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:51:57,449 INFO L93 Difference]: Finished difference Result 200 states and 215 transitions. [2024-11-11 15:51:57,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-11 15:51:57,449 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.86) internal successors, (93), 50 states have internal predecessors, (93), 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 [2024-11-11 15:51:57,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:51:57,450 INFO L225 Difference]: With dead ends: 200 [2024-11-11 15:51:57,450 INFO L226 Difference]: Without dead ends: 198 [2024-11-11 15:51:57,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3533 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=1417, Invalid=9089, Unknown=0, NotChecked=0, Total=10506 [2024-11-11 15:51:57,453 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 626 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:51:57,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 230 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-11 15:51:57,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-11 15:51:57,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 80. [2024-11-11 15:51:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.1518987341772151) internal successors, (91), 79 states have internal predecessors, (91), 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) [2024-11-11 15:51:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2024-11-11 15:51:57,490 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 35 [2024-11-11 15:51:57,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:51:57,490 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2024-11-11 15:51:57,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.86) internal successors, (93), 50 states have internal predecessors, (93), 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) [2024-11-11 15:51:57,490 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2024-11-11 15:51:57,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-11 15:51:57,491 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:51:57,491 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:51:57,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-11 15:51:57,691 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,SelfDestructingSolverStorable9 [2024-11-11 15:51:57,692 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:51:57,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:51:57,692 INFO L85 PathProgramCache]: Analyzing trace with hash 651293084, now seen corresponding path program 3 times [2024-11-11 15:51:57,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:51:57,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965623604] [2024-11-11 15:51:57,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:51:57,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:51:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:51:57,791 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:51:57,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:51:57,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965623604] [2024-11-11 15:51:57,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965623604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:51:57,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131695227] [2024-11-11 15:51:57,791 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:51:57,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:51:57,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:51:57,793 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) [2024-11-11 15:51:57,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-11 15:51:57,859 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-11 15:51:57,860 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:51:57,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-11 15:51:57,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:51:57,951 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:51:57,952 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:51:58,021 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 15:51:58,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131695227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:51:58,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:51:58,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-11 15:51:58,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109737316] [2024-11-11 15:51:58,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:51:58,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-11 15:51:58,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:51:58,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-11 15:51:58,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-11 15:51:58,023 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 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) [2024-11-11 15:51:58,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:51:58,205 INFO L93 Difference]: Finished difference Result 160 states and 177 transitions. [2024-11-11 15:51:58,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-11 15:51:58,206 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 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 39 [2024-11-11 15:51:58,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:51:58,208 INFO L225 Difference]: With dead ends: 160 [2024-11-11 15:51:58,208 INFO L226 Difference]: Without dead ends: 99 [2024-11-11 15:51:58,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 65 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-11 15:51:58,209 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 70 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:51:58,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 98 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:51:58,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-11 15:51:58,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 77. [2024-11-11 15:51:58,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.131578947368421) internal successors, (86), 76 states have internal predecessors, (86), 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) [2024-11-11 15:51:58,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2024-11-11 15:51:58,242 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 39 [2024-11-11 15:51:58,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:51:58,242 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2024-11-11 15:51:58,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 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) [2024-11-11 15:51:58,242 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2024-11-11 15:51:58,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-11 15:51:58,243 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:51:58,243 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:51:58,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-11 15:51:58,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:51:58,447 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:51:58,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:51:58,447 INFO L85 PathProgramCache]: Analyzing trace with hash -249765768, now seen corresponding path program 2 times [2024-11-11 15:51:58,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:51:58,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390261383] [2024-11-11 15:51:58,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:51:58,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:51:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:51:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:51:59,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:51:59,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390261383] [2024-11-11 15:51:59,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390261383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:51:59,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974962085] [2024-11-11 15:51:59,359 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:51:59,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:51:59,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:51:59,361 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) [2024-11-11 15:51:59,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-11 15:51:59,429 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:51:59,429 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:51:59,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-11 15:51:59,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:51:59,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-11 15:51:59,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-11 15:51:59,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:59,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-11 15:51:59,641 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:59,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2024-11-11 15:51:59,692 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:59,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-11 15:51:59,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:59,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-11 15:51:59,869 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:51:59,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-11 15:52:00,232 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:52:00,232 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:52:03,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 81 [2024-11-11 15:52:03,220 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:52:03,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 63 [2024-11-11 15:52:03,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 67 [2024-11-11 15:52:03,234 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:52:03,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 1 [2024-11-11 15:52:03,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2024-11-11 15:52:03,242 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:52:03,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 65 [2024-11-11 15:52:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:52:03,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974962085] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:52:03,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:52:03,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 24] total 62 [2024-11-11 15:52:03,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207478803] [2024-11-11 15:52:03,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:52:03,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-11 15:52:03,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:52:03,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-11 15:52:03,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=3161, Unknown=0, NotChecked=0, Total=3782 [2024-11-11 15:52:03,389 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 62 states, 62 states have (on average 1.935483870967742) internal successors, (120), 62 states have internal predecessors, (120), 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) [2024-11-11 15:52:17,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:52:17,505 INFO L93 Difference]: Finished difference Result 207 states and 222 transitions. [2024-11-11 15:52:17,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-11 15:52:17,506 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.935483870967742) internal successors, (120), 62 states have internal predecessors, (120), 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 44 [2024-11-11 15:52:17,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:52:17,506 INFO L225 Difference]: With dead ends: 207 [2024-11-11 15:52:17,506 INFO L226 Difference]: Without dead ends: 205 [2024-11-11 15:52:17,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4952 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=2813, Invalid=11949, Unknown=0, NotChecked=0, Total=14762 [2024-11-11 15:52:17,507 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 604 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-11 15:52:17,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 317 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-11 15:52:17,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-11 15:52:17,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 82. [2024-11-11 15:52:17,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.123456790123457) internal successors, (91), 81 states have internal predecessors, (91), 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) [2024-11-11 15:52:17,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2024-11-11 15:52:17,547 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 44 [2024-11-11 15:52:17,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:52:17,547 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2024-11-11 15:52:17,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.935483870967742) internal successors, (120), 62 states have internal predecessors, (120), 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) [2024-11-11 15:52:17,547 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2024-11-11 15:52:17,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-11 15:52:17,548 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:52:17,548 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:52:17,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-11 15:52:17,748 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,SelfDestructingSolverStorable11 [2024-11-11 15:52:17,748 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:52:17,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:52:17,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1731583918, now seen corresponding path program 3 times [2024-11-11 15:52:17,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:52:17,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996893957] [2024-11-11 15:52:17,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:52:17,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:52:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:52:17,883 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 15:52:17,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:52:17,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996893957] [2024-11-11 15:52:17,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996893957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:52:17,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860795477] [2024-11-11 15:52:17,883 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:52:17,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:52:17,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:52:17,885 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) [2024-11-11 15:52:17,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-11 15:52:17,967 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-11 15:52:17,967 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:52:17,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-11 15:52:17,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:52:18,075 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 32 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-11 15:52:18,075 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:52:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 32 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-11 15:52:18,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860795477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:52:18,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:52:18,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-11 15:52:18,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855760328] [2024-11-11 15:52:18,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:52:18,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-11 15:52:18,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:52:18,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-11 15:52:18,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-11 15:52:18,157 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 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) [2024-11-11 15:52:18,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:52:18,382 INFO L93 Difference]: Finished difference Result 177 states and 189 transitions. [2024-11-11 15:52:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-11 15:52:18,382 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 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 48 [2024-11-11 15:52:18,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:52:18,383 INFO L225 Difference]: With dead ends: 177 [2024-11-11 15:52:18,383 INFO L226 Difference]: Without dead ends: 121 [2024-11-11 15:52:18,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 80 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-11 15:52:18,384 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 74 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:52:18,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 106 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:52:18,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-11 15:52:18,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 82. [2024-11-11 15:52:18,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.1111111111111112) internal successors, (90), 81 states have internal predecessors, (90), 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) [2024-11-11 15:52:18,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2024-11-11 15:52:18,422 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 48 [2024-11-11 15:52:18,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:52:18,422 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2024-11-11 15:52:18,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 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) [2024-11-11 15:52:18,422 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2024-11-11 15:52:18,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-11 15:52:18,423 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:52:18,423 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:52:18,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-11 15:52:18,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-11 15:52:18,623 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:52:18,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:52:18,624 INFO L85 PathProgramCache]: Analyzing trace with hash -602754336, now seen corresponding path program 4 times [2024-11-11 15:52:18,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:52:18,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843749134] [2024-11-11 15:52:18,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:52:18,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:52:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:52:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:52:20,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:52:20,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843749134] [2024-11-11 15:52:20,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843749134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:52:20,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502829212] [2024-11-11 15:52:20,006 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:52:20,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:52:20,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:52:20,007 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 15:52:20,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-11 15:52:20,064 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:52:20,065 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:52:20,066 WARN L254 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-11 15:52:20,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:52:20,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-11 15:52:20,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-11 15:52:20,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-11 15:52:20,185 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-11 15:52:20,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 31 [2024-11-11 15:52:20,371 INFO L349 Elim1Store]: treesize reduction 42, result has 44.0 percent of original size [2024-11-11 15:52:20,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 39 [2024-11-11 15:52:20,514 INFO L349 Elim1Store]: treesize reduction 38, result has 56.3 percent of original size [2024-11-11 15:52:20,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 74 [2024-11-11 15:52:20,721 INFO L349 Elim1Store]: treesize reduction 70, result has 26.3 percent of original size [2024-11-11 15:52:20,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 81 treesize of output 65 [2024-11-11 15:52:20,868 INFO L349 Elim1Store]: treesize reduction 54, result has 47.6 percent of original size [2024-11-11 15:52:20,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 83 treesize of output 100 [2024-11-11 15:52:21,174 INFO L349 Elim1Store]: treesize reduction 86, result has 22.5 percent of original size [2024-11-11 15:52:21,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 101 treesize of output 88 [2024-11-11 15:52:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:52:21,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:52:25,933 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 14 proven. 55 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-11 15:52:25,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502829212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:52:25,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:52:25,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27, 26] total 77 [2024-11-11 15:52:25,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846696220] [2024-11-11 15:52:25,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:52:25,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-11 15:52:25,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:52:25,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-11 15:52:25,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=5199, Unknown=0, NotChecked=0, Total=5852 [2024-11-11 15:52:25,935 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 77 states, 77 states have (on average 1.6753246753246753) internal successors, (129), 77 states have internal predecessors, (129), 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)