./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash c3533435b3574844c676ebf9ef5728195d9e5ba69ebd57baed9e55717a70044d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 11:56:10,770 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 11:56:10,822 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-16 11:56:10,826 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 11:56:10,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 11:56:10,853 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 11:56:10,854 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 11:56:10,854 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 11:56:10,854 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 11:56:10,855 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 11:56:10,855 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 11:56:10,855 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 11:56:10,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 11:56:10,858 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 11:56:10,858 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 11:56:10,858 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 11:56:10,858 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 11:56:10,859 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 11:56:10,859 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 11:56:10,859 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 11:56:10,859 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 11:56:10,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 11:56:10,862 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 11:56:10,863 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 11:56:10,863 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 11:56:10,863 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 11:56:10,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 11:56:10,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 11:56:10,864 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 11:56:10,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 11:56:10,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 11:56:10,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 11:56:10,864 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 11:56:10,864 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 11:56:10,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 11:56:10,865 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 11:56:10,865 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 11:56:10,865 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 11:56:10,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 11:56:10,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3533435b3574844c676ebf9ef5728195d9e5ba69ebd57baed9e55717a70044d [2024-11-16 11:56:11,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 11:56:11,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 11:56:11,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 11:56:11,153 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 11:56:11,153 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 11:56:11,154 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p2.c [2024-11-16 11:56:12,458 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 11:56:12,650 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 11:56:12,651 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p2.c [2024-11-16 11:56:12,663 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e3acb6ef/8688c6c758f44ba691a6d0a33bcddc88/FLAG4b0719ad0 [2024-11-16 11:56:12,677 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e3acb6ef/8688c6c758f44ba691a6d0a33bcddc88 [2024-11-16 11:56:12,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 11:56:12,680 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 11:56:12,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 11:56:12,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 11:56:12,685 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 11:56:12,686 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:56:12" (1/1) ... [2024-11-16 11:56:12,687 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@439274da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:12, skipping insertion in model container [2024-11-16 11:56:12,687 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:56:12" (1/1) ... [2024-11-16 11:56:12,732 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 11:56:12,917 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/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p2.c[1258,1271] [2024-11-16 11:56:13,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 11:56:13,115 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 11:56:13,128 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/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p2.c[1258,1271] [2024-11-16 11:56:13,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 11:56:13,250 INFO L204 MainTranslator]: Completed translation [2024-11-16 11:56:13,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:13 WrapperNode [2024-11-16 11:56:13,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 11:56:13,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 11:56:13,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 11:56:13,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 11:56:13,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:13" (1/1) ... [2024-11-16 11:56:13,285 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:13" (1/1) ... [2024-11-16 11:56:13,403 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1475 [2024-11-16 11:56:13,403 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 11:56:13,404 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 11:56:13,404 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 11:56:13,404 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 11:56:13,424 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:13" (1/1) ... [2024-11-16 11:56:13,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:13" (1/1) ... [2024-11-16 11:56:13,512 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:13" (1/1) ... [2024-11-16 11:56:13,592 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 11:56:13,592 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:13" (1/1) ... [2024-11-16 11:56:13,593 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:13" (1/1) ... [2024-11-16 11:56:13,641 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:13" (1/1) ... [2024-11-16 11:56:13,645 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:13" (1/1) ... [2024-11-16 11:56:13,652 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:13" (1/1) ... [2024-11-16 11:56:13,662 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:13" (1/1) ... [2024-11-16 11:56:13,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 11:56:13,685 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 11:56:13,685 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 11:56:13,685 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 11:56:13,686 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:13" (1/1) ... [2024-11-16 11:56:13,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 11:56:13,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:56:13,711 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) [2024-11-16 11:56:13,742 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 [2024-11-16 11:56:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 11:56:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 11:56:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 11:56:13,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 11:56:13,942 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 11:56:13,943 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 11:56:15,254 INFO L? ?]: Removed 723 outVars from TransFormulas that were not future-live. [2024-11-16 11:56:15,254 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 11:56:15,328 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 11:56:15,329 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 11:56:15,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:56:15 BoogieIcfgContainer [2024-11-16 11:56:15,329 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 11:56:15,331 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 11:56:15,331 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 11:56:15,333 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 11:56:15,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:56:12" (1/3) ... [2024-11-16 11:56:15,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237f7cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:56:15, skipping insertion in model container [2024-11-16 11:56:15,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:56:13" (2/3) ... [2024-11-16 11:56:15,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237f7cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:56:15, skipping insertion in model container [2024-11-16 11:56:15,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:56:15" (3/3) ... [2024-11-16 11:56:15,335 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vMiim_p2.c [2024-11-16 11:56:15,347 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 11:56:15,348 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 11:56:15,393 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 11:56:15,397 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;@55971810, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 11:56:15,398 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 11:56:15,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 349 states, 347 states have (on average 1.4927953890489913) internal successors, (518), 348 states have internal predecessors, (518), 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) [2024-11-16 11:56:15,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 11:56:15,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:15,409 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:15,410 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:15,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:15,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1485556904, now seen corresponding path program 1 times [2024-11-16 11:56:15,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:15,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097719165] [2024-11-16 11:56:15,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:15,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:16,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:16,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097719165] [2024-11-16 11:56:16,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097719165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:16,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:16,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:56:16,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442922077] [2024-11-16 11:56:16,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:16,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:56:16,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:16,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:56:16,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:56:16,513 INFO L87 Difference]: Start difference. First operand has 349 states, 347 states have (on average 1.4927953890489913) internal successors, (518), 348 states have internal predecessors, (518), 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 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 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) [2024-11-16 11:56:16,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:16,981 INFO L93 Difference]: Finished difference Result 598 states and 892 transitions. [2024-11-16 11:56:16,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:56:16,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 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) Word has length 86 [2024-11-16 11:56:16,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:16,997 INFO L225 Difference]: With dead ends: 598 [2024-11-16 11:56:16,997 INFO L226 Difference]: Without dead ends: 375 [2024-11-16 11:56:17,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-16 11:56:17,005 INFO L432 NwaCegarLoop]: 411 mSDtfsCounter, 520 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:17,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 2049 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 11:56:17,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-16 11:56:17,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 374. [2024-11-16 11:56:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 1.4879356568364612) internal successors, (555), 373 states have internal predecessors, (555), 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) [2024-11-16 11:56:17,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 555 transitions. [2024-11-16 11:56:17,057 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 555 transitions. Word has length 86 [2024-11-16 11:56:17,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:17,057 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 555 transitions. [2024-11-16 11:56:17,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 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) [2024-11-16 11:56:17,058 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 555 transitions. [2024-11-16 11:56:17,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-16 11:56:17,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:17,060 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:17,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 11:56:17,061 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:17,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:17,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1432305027, now seen corresponding path program 1 times [2024-11-16 11:56:17,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:17,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999766130] [2024-11-16 11:56:17,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:17,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:17,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:17,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999766130] [2024-11-16 11:56:17,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999766130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:17,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:17,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 11:56:17,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040396339] [2024-11-16 11:56:17,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:17,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 11:56:17,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:17,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 11:56:17,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 11:56:17,295 INFO L87 Difference]: Start difference. First operand 374 states and 555 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-16 11:56:17,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:17,436 INFO L93 Difference]: Finished difference Result 379 states and 560 transitions. [2024-11-16 11:56:17,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 11:56:17,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 87 [2024-11-16 11:56:17,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:17,439 INFO L225 Difference]: With dead ends: 379 [2024-11-16 11:56:17,439 INFO L226 Difference]: Without dead ends: 376 [2024-11-16 11:56:17,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 11:56:17,440 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 0 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:17,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1273 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 11:56:17,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-16 11:56:17,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2024-11-16 11:56:17,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.4853333333333334) internal successors, (557), 375 states have internal predecessors, (557), 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) [2024-11-16 11:56:17,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 557 transitions. [2024-11-16 11:56:17,458 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 557 transitions. Word has length 87 [2024-11-16 11:56:17,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:17,458 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 557 transitions. [2024-11-16 11:56:17,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-16 11:56:17,458 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 557 transitions. [2024-11-16 11:56:17,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 11:56:17,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:17,463 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:17,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 11:56:17,463 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:17,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:17,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1596836562, now seen corresponding path program 1 times [2024-11-16 11:56:17,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:17,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017830689] [2024-11-16 11:56:17,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:17,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:17,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:17,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017830689] [2024-11-16 11:56:17,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017830689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:17,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:17,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 11:56:17,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094703644] [2024-11-16 11:56:17,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:17,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 11:56:17,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:17,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 11:56:17,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 11:56:17,716 INFO L87 Difference]: Start difference. First operand 376 states and 557 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2024-11-16 11:56:17,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:17,935 INFO L93 Difference]: Finished difference Result 598 states and 886 transitions. [2024-11-16 11:56:17,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 11:56:17,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 88 [2024-11-16 11:56:17,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:17,937 INFO L225 Difference]: With dead ends: 598 [2024-11-16 11:56:17,941 INFO L226 Difference]: Without dead ends: 378 [2024-11-16 11:56:17,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 11:56:17,943 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 0 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:17,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1270 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:56:17,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-11-16 11:56:17,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2024-11-16 11:56:17,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 1.4827586206896552) internal successors, (559), 377 states have internal predecessors, (559), 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) [2024-11-16 11:56:17,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 559 transitions. [2024-11-16 11:56:17,958 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 559 transitions. Word has length 88 [2024-11-16 11:56:17,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:17,958 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 559 transitions. [2024-11-16 11:56:17,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2024-11-16 11:56:17,962 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 559 transitions. [2024-11-16 11:56:17,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-16 11:56:17,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:17,963 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:17,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 11:56:17,964 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:17,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:17,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2004537032, now seen corresponding path program 1 times [2024-11-16 11:56:17,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:17,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831890100] [2024-11-16 11:56:17,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:17,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:18,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:18,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:18,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831890100] [2024-11-16 11:56:18,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831890100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:18,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:18,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-16 11:56:18,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771253085] [2024-11-16 11:56:18,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:18,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 11:56:18,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:18,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 11:56:18,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-16 11:56:18,395 INFO L87 Difference]: Start difference. First operand 378 states and 559 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 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) [2024-11-16 11:56:18,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:18,915 INFO L93 Difference]: Finished difference Result 735 states and 1081 transitions. [2024-11-16 11:56:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 11:56:18,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 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 89 [2024-11-16 11:56:18,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:18,918 INFO L225 Difference]: With dead ends: 735 [2024-11-16 11:56:18,919 INFO L226 Difference]: Without dead ends: 504 [2024-11-16 11:56:18,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-16 11:56:18,921 INFO L432 NwaCegarLoop]: 409 mSDtfsCounter, 875 mSDsluCounter, 2454 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:18,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 2863 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 11:56:18,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2024-11-16 11:56:18,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 382. [2024-11-16 11:56:18,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.4750656167979002) internal successors, (562), 381 states have internal predecessors, (562), 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) [2024-11-16 11:56:18,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 562 transitions. [2024-11-16 11:56:18,933 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 562 transitions. Word has length 89 [2024-11-16 11:56:18,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:18,933 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 562 transitions. [2024-11-16 11:56:18,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 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) [2024-11-16 11:56:18,933 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 562 transitions. [2024-11-16 11:56:18,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-16 11:56:18,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:18,934 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:18,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 11:56:18,935 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:18,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:18,935 INFO L85 PathProgramCache]: Analyzing trace with hash -2064976974, now seen corresponding path program 1 times [2024-11-16 11:56:18,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:18,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722918299] [2024-11-16 11:56:18,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:18,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:19,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:19,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:19,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722918299] [2024-11-16 11:56:19,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722918299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:19,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:19,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:56:19,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337396413] [2024-11-16 11:56:19,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:19,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:56:19,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:19,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:56:19,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:56:19,169 INFO L87 Difference]: Start difference. First operand 382 states and 562 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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) [2024-11-16 11:56:19,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:19,493 INFO L93 Difference]: Finished difference Result 810 states and 1189 transitions. [2024-11-16 11:56:19,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:56:19,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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) Word has length 90 [2024-11-16 11:56:19,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:19,496 INFO L225 Difference]: With dead ends: 810 [2024-11-16 11:56:19,496 INFO L226 Difference]: Without dead ends: 573 [2024-11-16 11:56:19,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-16 11:56:19,497 INFO L432 NwaCegarLoop]: 410 mSDtfsCounter, 1069 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:19,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 2049 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 11:56:19,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-11-16 11:56:19,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 383. [2024-11-16 11:56:19,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.4712041884816753) internal successors, (562), 382 states have internal predecessors, (562), 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) [2024-11-16 11:56:19,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 562 transitions. [2024-11-16 11:56:19,504 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 562 transitions. Word has length 90 [2024-11-16 11:56:19,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:19,504 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 562 transitions. [2024-11-16 11:56:19,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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) [2024-11-16 11:56:19,504 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 562 transitions. [2024-11-16 11:56:19,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-16 11:56:19,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:19,505 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:19,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 11:56:19,505 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:19,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:19,509 INFO L85 PathProgramCache]: Analyzing trace with hash 627246659, now seen corresponding path program 1 times [2024-11-16 11:56:19,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:19,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834727271] [2024-11-16 11:56:19,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:19,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:19,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:19,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:19,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834727271] [2024-11-16 11:56:19,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834727271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:19,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:19,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:56:19,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217334001] [2024-11-16 11:56:19,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:19,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:56:19,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:19,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:56:19,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:56:19,849 INFO L87 Difference]: Start difference. First operand 383 states and 562 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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) [2024-11-16 11:56:20,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:20,475 INFO L93 Difference]: Finished difference Result 660 states and 961 transitions. [2024-11-16 11:56:20,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:56:20,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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) Word has length 91 [2024-11-16 11:56:20,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:20,481 INFO L225 Difference]: With dead ends: 660 [2024-11-16 11:56:20,482 INFO L226 Difference]: Without dead ends: 418 [2024-11-16 11:56:20,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-16 11:56:20,485 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 599 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:20,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 2064 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 11:56:20,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-16 11:56:20,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 384. [2024-11-16 11:56:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 1.4673629242819843) internal successors, (562), 383 states have internal predecessors, (562), 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) [2024-11-16 11:56:20,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 562 transitions. [2024-11-16 11:56:20,492 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 562 transitions. Word has length 91 [2024-11-16 11:56:20,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:20,493 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 562 transitions. [2024-11-16 11:56:20,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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) [2024-11-16 11:56:20,495 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 562 transitions. [2024-11-16 11:56:20,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-16 11:56:20,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:20,496 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:20,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 11:56:20,496 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:20,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:20,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1421460041, now seen corresponding path program 1 times [2024-11-16 11:56:20,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:20,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454044503] [2024-11-16 11:56:20,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:20,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:21,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:21,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:21,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454044503] [2024-11-16 11:56:21,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454044503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:21,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:21,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:56:21,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094330141] [2024-11-16 11:56:21,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:21,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:56:21,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:21,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:56:21,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:56:21,127 INFO L87 Difference]: Start difference. First operand 384 states and 562 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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) [2024-11-16 11:56:21,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:21,477 INFO L93 Difference]: Finished difference Result 690 states and 1003 transitions. [2024-11-16 11:56:21,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:56:21,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 92 [2024-11-16 11:56:21,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:21,479 INFO L225 Difference]: With dead ends: 690 [2024-11-16 11:56:21,479 INFO L226 Difference]: Without dead ends: 443 [2024-11-16 11:56:21,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-16 11:56:21,480 INFO L432 NwaCegarLoop]: 412 mSDtfsCounter, 669 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 2059 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:21,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 2059 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 11:56:21,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-11-16 11:56:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 385. [2024-11-16 11:56:21,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.4635416666666667) internal successors, (562), 384 states have internal predecessors, (562), 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) [2024-11-16 11:56:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 562 transitions. [2024-11-16 11:56:21,487 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 562 transitions. Word has length 92 [2024-11-16 11:56:21,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:21,487 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 562 transitions. [2024-11-16 11:56:21,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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) [2024-11-16 11:56:21,488 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 562 transitions. [2024-11-16 11:56:21,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-16 11:56:21,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:21,488 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:21,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 11:56:21,489 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:21,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:21,489 INFO L85 PathProgramCache]: Analyzing trace with hash -601770306, now seen corresponding path program 1 times [2024-11-16 11:56:21,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:21,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160617011] [2024-11-16 11:56:21,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:21,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:21,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:21,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160617011] [2024-11-16 11:56:21,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160617011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:21,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:21,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:56:21,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335196796] [2024-11-16 11:56:21,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:21,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:56:21,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:21,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:56:21,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:56:21,824 INFO L87 Difference]: Start difference. First operand 385 states and 562 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 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) [2024-11-16 11:56:22,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:22,323 INFO L93 Difference]: Finished difference Result 801 states and 1173 transitions. [2024-11-16 11:56:22,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 11:56:22,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 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 93 [2024-11-16 11:56:22,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:22,325 INFO L225 Difference]: With dead ends: 801 [2024-11-16 11:56:22,325 INFO L226 Difference]: Without dead ends: 548 [2024-11-16 11:56:22,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-16 11:56:22,326 INFO L432 NwaCegarLoop]: 415 mSDtfsCounter, 1026 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:22,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 2069 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 11:56:22,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-16 11:56:22,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 367. [2024-11-16 11:56:22,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.4672131147540983) internal successors, (537), 366 states have internal predecessors, (537), 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) [2024-11-16 11:56:22,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 537 transitions. [2024-11-16 11:56:22,334 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 537 transitions. Word has length 93 [2024-11-16 11:56:22,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:22,335 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 537 transitions. [2024-11-16 11:56:22,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 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) [2024-11-16 11:56:22,335 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 537 transitions. [2024-11-16 11:56:22,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-16 11:56:22,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:22,337 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:22,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 11:56:22,338 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:22,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:22,338 INFO L85 PathProgramCache]: Analyzing trace with hash 2091219602, now seen corresponding path program 1 times [2024-11-16 11:56:22,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:22,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055273835] [2024-11-16 11:56:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:22,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:23,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:23,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055273835] [2024-11-16 11:56:23,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055273835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:56:23,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050365487] [2024-11-16 11:56:23,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:23,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:56:23,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:56:23,133 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) [2024-11-16 11:56:23,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 11:56:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:23,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 11:56:23,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:56:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:24,171 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 11:56:24,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050365487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:24,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 11:56:24,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-16 11:56:24,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322631747] [2024-11-16 11:56:24,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:24,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 11:56:24,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:24,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 11:56:24,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:56:24,177 INFO L87 Difference]: Start difference. First operand 367 states and 537 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2024-11-16 11:56:24,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:24,588 INFO L93 Difference]: Finished difference Result 588 states and 864 transitions. [2024-11-16 11:56:24,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 11:56:24,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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 198 [2024-11-16 11:56:24,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:24,590 INFO L225 Difference]: With dead ends: 588 [2024-11-16 11:56:24,590 INFO L226 Difference]: Without dead ends: 366 [2024-11-16 11:56:24,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-16 11:56:24,591 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 389 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:24,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 517 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 11:56:24,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-16 11:56:24,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2024-11-16 11:56:24,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 1.463013698630137) internal successors, (534), 365 states have internal predecessors, (534), 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) [2024-11-16 11:56:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 534 transitions. [2024-11-16 11:56:24,596 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 534 transitions. Word has length 198 [2024-11-16 11:56:24,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:24,597 INFO L471 AbstractCegarLoop]: Abstraction has 366 states and 534 transitions. [2024-11-16 11:56:24,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2024-11-16 11:56:24,597 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 534 transitions. [2024-11-16 11:56:24,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-16 11:56:24,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:24,598 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:24,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 11:56:24,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:56:24,800 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:24,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:24,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1204368343, now seen corresponding path program 1 times [2024-11-16 11:56:24,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:24,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927942963] [2024-11-16 11:56:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:24,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:25,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:25,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927942963] [2024-11-16 11:56:25,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927942963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:25,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:25,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 11:56:25,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74900412] [2024-11-16 11:56:25,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:25,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 11:56:25,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:25,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 11:56:25,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:56:25,817 INFO L87 Difference]: Start difference. First operand 366 states and 534 transitions. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 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) [2024-11-16 11:56:26,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:26,212 INFO L93 Difference]: Finished difference Result 707 states and 1034 transitions. [2024-11-16 11:56:26,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 11:56:26,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 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 199 [2024-11-16 11:56:26,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:26,215 INFO L225 Difference]: With dead ends: 707 [2024-11-16 11:56:26,215 INFO L226 Difference]: Without dead ends: 478 [2024-11-16 11:56:26,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-16 11:56:26,216 INFO L432 NwaCegarLoop]: 411 mSDtfsCounter, 788 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:26,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1488 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 11:56:26,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2024-11-16 11:56:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 432. [2024-11-16 11:56:26,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 1.4617169373549883) internal successors, (630), 431 states have internal predecessors, (630), 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) [2024-11-16 11:56:26,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 630 transitions. [2024-11-16 11:56:26,225 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 630 transitions. Word has length 199 [2024-11-16 11:56:26,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:26,226 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 630 transitions. [2024-11-16 11:56:26,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 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) [2024-11-16 11:56:26,226 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 630 transitions. [2024-11-16 11:56:26,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-16 11:56:26,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:26,227 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:26,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 11:56:26,228 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:26,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:26,228 INFO L85 PathProgramCache]: Analyzing trace with hash -243915741, now seen corresponding path program 1 times [2024-11-16 11:56:26,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:26,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999933873] [2024-11-16 11:56:26,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:26,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:27,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:27,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999933873] [2024-11-16 11:56:27,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999933873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:27,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:27,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:56:27,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936821728] [2024-11-16 11:56:27,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:27,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:56:27,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:27,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:56:27,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:56:27,269 INFO L87 Difference]: Start difference. First operand 432 states and 630 transitions. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2024-11-16 11:56:27,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:27,805 INFO L93 Difference]: Finished difference Result 699 states and 1022 transitions. [2024-11-16 11:56:27,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:56:27,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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 200 [2024-11-16 11:56:27,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:27,807 INFO L225 Difference]: With dead ends: 699 [2024-11-16 11:56:27,807 INFO L226 Difference]: Without dead ends: 478 [2024-11-16 11:56:27,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:56:27,808 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 761 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:27,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 759 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 11:56:27,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2024-11-16 11:56:27,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 433. [2024-11-16 11:56:27,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.4606481481481481) internal successors, (631), 432 states have internal predecessors, (631), 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) [2024-11-16 11:56:27,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 631 transitions. [2024-11-16 11:56:27,816 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 631 transitions. Word has length 200 [2024-11-16 11:56:27,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:27,816 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 631 transitions. [2024-11-16 11:56:27,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2024-11-16 11:56:27,816 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 631 transitions. [2024-11-16 11:56:27,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-16 11:56:27,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:27,818 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:27,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 11:56:27,818 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:27,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:27,819 INFO L85 PathProgramCache]: Analyzing trace with hash -89196776, now seen corresponding path program 1 times [2024-11-16 11:56:27,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:27,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235518229] [2024-11-16 11:56:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:27,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:28,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:28,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235518229] [2024-11-16 11:56:28,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235518229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:28,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:28,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 11:56:28,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849969900] [2024-11-16 11:56:28,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:28,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 11:56:28,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:28,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 11:56:28,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:56:28,622 INFO L87 Difference]: Start difference. First operand 433 states and 631 transitions. Second operand has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 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) [2024-11-16 11:56:29,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:29,068 INFO L93 Difference]: Finished difference Result 837 states and 1218 transitions. [2024-11-16 11:56:29,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 11:56:29,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 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 201 [2024-11-16 11:56:29,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:29,071 INFO L225 Difference]: With dead ends: 837 [2024-11-16 11:56:29,071 INFO L226 Difference]: Without dead ends: 616 [2024-11-16 11:56:29,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-16 11:56:29,072 INFO L432 NwaCegarLoop]: 455 mSDtfsCounter, 1111 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:29,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1252 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 11:56:29,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-11-16 11:56:29,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 543. [2024-11-16 11:56:29,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 542 states have (on average 1.46309963099631) internal successors, (793), 542 states have internal predecessors, (793), 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) [2024-11-16 11:56:29,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 793 transitions. [2024-11-16 11:56:29,083 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 793 transitions. Word has length 201 [2024-11-16 11:56:29,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:29,084 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 793 transitions. [2024-11-16 11:56:29,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 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) [2024-11-16 11:56:29,084 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 793 transitions. [2024-11-16 11:56:29,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-16 11:56:29,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:29,086 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:29,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 11:56:29,086 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:29,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:29,087 INFO L85 PathProgramCache]: Analyzing trace with hash -861520122, now seen corresponding path program 1 times [2024-11-16 11:56:29,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:29,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245845380] [2024-11-16 11:56:29,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:29,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:29,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:29,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245845380] [2024-11-16 11:56:29,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245845380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:29,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:29,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:56:29,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392753089] [2024-11-16 11:56:29,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:29,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:56:29,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:29,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:56:29,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:56:29,979 INFO L87 Difference]: Start difference. First operand 543 states and 793 transitions. Second operand has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 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) [2024-11-16 11:56:30,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:30,474 INFO L93 Difference]: Finished difference Result 766 states and 1121 transitions. [2024-11-16 11:56:30,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:56:30,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 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 202 [2024-11-16 11:56:30,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:30,477 INFO L225 Difference]: With dead ends: 766 [2024-11-16 11:56:30,477 INFO L226 Difference]: Without dead ends: 545 [2024-11-16 11:56:30,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:56:30,478 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 897 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:30,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 752 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 11:56:30,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-16 11:56:30,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 544. [2024-11-16 11:56:30,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 1.4622467771639043) internal successors, (794), 543 states have internal predecessors, (794), 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) [2024-11-16 11:56:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 794 transitions. [2024-11-16 11:56:30,486 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 794 transitions. Word has length 202 [2024-11-16 11:56:30,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:30,487 INFO L471 AbstractCegarLoop]: Abstraction has 544 states and 794 transitions. [2024-11-16 11:56:30,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 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) [2024-11-16 11:56:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 794 transitions. [2024-11-16 11:56:30,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-16 11:56:30,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:30,488 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:30,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 11:56:30,489 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:30,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:30,489 INFO L85 PathProgramCache]: Analyzing trace with hash -2020771580, now seen corresponding path program 1 times [2024-11-16 11:56:30,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:30,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141947743] [2024-11-16 11:56:30,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:30,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:34,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:34,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141947743] [2024-11-16 11:56:34,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141947743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:34,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:34,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-16 11:56:34,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76633631] [2024-11-16 11:56:34,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:34,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 11:56:34,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:34,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 11:56:34,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-16 11:56:34,111 INFO L87 Difference]: Start difference. First operand 544 states and 794 transitions. Second operand has 12 states, 12 states have (on average 16.916666666666668) internal successors, (203), 12 states have internal predecessors, (203), 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) [2024-11-16 11:56:34,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:34,789 INFO L93 Difference]: Finished difference Result 1038 states and 1510 transitions. [2024-11-16 11:56:34,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 11:56:34,790 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.916666666666668) internal successors, (203), 12 states have internal predecessors, (203), 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 203 [2024-11-16 11:56:34,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:34,792 INFO L225 Difference]: With dead ends: 1038 [2024-11-16 11:56:34,792 INFO L226 Difference]: Without dead ends: 733 [2024-11-16 11:56:34,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2024-11-16 11:56:34,793 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 1629 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:34,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1629 Valid, 2663 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 11:56:34,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2024-11-16 11:56:34,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 658. [2024-11-16 11:56:34,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 657 states have (on average 1.4459665144596652) internal successors, (950), 657 states have internal predecessors, (950), 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) [2024-11-16 11:56:34,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 950 transitions. [2024-11-16 11:56:34,801 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 950 transitions. Word has length 203 [2024-11-16 11:56:34,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:34,801 INFO L471 AbstractCegarLoop]: Abstraction has 658 states and 950 transitions. [2024-11-16 11:56:34,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.916666666666668) internal successors, (203), 12 states have internal predecessors, (203), 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) [2024-11-16 11:56:34,801 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 950 transitions. [2024-11-16 11:56:34,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-16 11:56:34,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:34,803 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:34,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 11:56:34,803 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:34,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:34,803 INFO L85 PathProgramCache]: Analyzing trace with hash 432457942, now seen corresponding path program 1 times [2024-11-16 11:56:34,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:34,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062594386] [2024-11-16 11:56:34,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:34,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:36,164 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:36,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:36,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062594386] [2024-11-16 11:56:36,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062594386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:56:36,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772407962] [2024-11-16 11:56:36,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:36,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:56:36,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:56:36,166 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) [2024-11-16 11:56:36,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 11:56:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:36,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 11:56:36,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:56:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:37,243 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 11:56:37,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772407962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:37,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 11:56:37,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2024-11-16 11:56:37,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578626303] [2024-11-16 11:56:37,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:37,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:56:37,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:37,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:56:37,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-16 11:56:37,245 INFO L87 Difference]: Start difference. First operand 658 states and 950 transitions. Second operand has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 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) [2024-11-16 11:56:37,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:37,767 INFO L93 Difference]: Finished difference Result 1033 states and 1501 transitions. [2024-11-16 11:56:37,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:56:37,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 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 204 [2024-11-16 11:56:37,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:37,769 INFO L225 Difference]: With dead ends: 1033 [2024-11-16 11:56:37,770 INFO L226 Difference]: Without dead ends: 581 [2024-11-16 11:56:37,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-16 11:56:37,771 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 732 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:37,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 754 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 11:56:37,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-16 11:56:37,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 544. [2024-11-16 11:56:37,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 1.4585635359116023) internal successors, (792), 543 states have internal predecessors, (792), 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) [2024-11-16 11:56:37,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 792 transitions. [2024-11-16 11:56:37,777 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 792 transitions. Word has length 204 [2024-11-16 11:56:37,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:37,777 INFO L471 AbstractCegarLoop]: Abstraction has 544 states and 792 transitions. [2024-11-16 11:56:37,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 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) [2024-11-16 11:56:37,777 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 792 transitions. [2024-11-16 11:56:37,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-16 11:56:37,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:37,779 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:37,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 11:56:37,982 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,SelfDestructingSolverStorable14 [2024-11-16 11:56:37,983 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:37,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:37,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1777885610, now seen corresponding path program 1 times [2024-11-16 11:56:37,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:37,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27359339] [2024-11-16 11:56:37,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:37,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:40,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:40,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27359339] [2024-11-16 11:56:40,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27359339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:40,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:40,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-16 11:56:40,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048528223] [2024-11-16 11:56:40,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:40,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 11:56:40,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:40,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 11:56:40,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-16 11:56:40,218 INFO L87 Difference]: Start difference. First operand 544 states and 792 transitions. Second operand has 11 states, 11 states have (on average 18.636363636363637) internal successors, (205), 11 states have internal predecessors, (205), 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) [2024-11-16 11:56:40,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:40,748 INFO L93 Difference]: Finished difference Result 1345 states and 1961 transitions. [2024-11-16 11:56:40,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 11:56:40,748 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.636363636363637) internal successors, (205), 11 states have internal predecessors, (205), 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 205 [2024-11-16 11:56:40,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:40,751 INFO L225 Difference]: With dead ends: 1345 [2024-11-16 11:56:40,751 INFO L226 Difference]: Without dead ends: 1040 [2024-11-16 11:56:40,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-16 11:56:40,751 INFO L432 NwaCegarLoop]: 398 mSDtfsCounter, 966 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:40,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 2454 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 11:56:40,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2024-11-16 11:56:40,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 781. [2024-11-16 11:56:40,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 780 states have (on average 1.4435897435897436) internal successors, (1126), 780 states have internal predecessors, (1126), 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) [2024-11-16 11:56:40,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1126 transitions. [2024-11-16 11:56:40,764 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1126 transitions. Word has length 205 [2024-11-16 11:56:40,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:40,764 INFO L471 AbstractCegarLoop]: Abstraction has 781 states and 1126 transitions. [2024-11-16 11:56:40,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.636363636363637) internal successors, (205), 11 states have internal predecessors, (205), 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) [2024-11-16 11:56:40,765 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1126 transitions. [2024-11-16 11:56:40,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-16 11:56:40,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:40,766 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:40,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 11:56:40,766 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:40,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:40,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1297352954, now seen corresponding path program 1 times [2024-11-16 11:56:40,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:40,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650632461] [2024-11-16 11:56:40,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:40,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:42,453 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:42,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:42,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650632461] [2024-11-16 11:56:42,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650632461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:56:42,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762985417] [2024-11-16 11:56:42,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:42,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:56:42,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:56:42,455 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) [2024-11-16 11:56:42,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 11:56:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:43,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-16 11:56:43,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:56:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:44,558 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 11:56:44,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762985417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:44,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 11:56:44,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 22 [2024-11-16 11:56:44,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799041701] [2024-11-16 11:56:44,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:44,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 11:56:44,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:44,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 11:56:44,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2024-11-16 11:56:44,563 INFO L87 Difference]: Start difference. First operand 781 states and 1126 transitions. Second operand has 13 states, 13 states have (on average 15.846153846153847) internal successors, (206), 13 states have internal predecessors, (206), 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) [2024-11-16 11:56:45,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:45,907 INFO L93 Difference]: Finished difference Result 1232 states and 1789 transitions. [2024-11-16 11:56:45,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 11:56:45,907 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.846153846153847) internal successors, (206), 13 states have internal predecessors, (206), 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 206 [2024-11-16 11:56:45,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:45,910 INFO L225 Difference]: With dead ends: 1232 [2024-11-16 11:56:45,910 INFO L226 Difference]: Without dead ends: 800 [2024-11-16 11:56:45,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2024-11-16 11:56:45,917 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 1216 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 2431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:45,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 2012 Invalid, 2431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 11:56:45,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2024-11-16 11:56:45,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 788. [2024-11-16 11:56:45,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 1.4421855146124523) internal successors, (1135), 787 states have internal predecessors, (1135), 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) [2024-11-16 11:56:45,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1135 transitions. [2024-11-16 11:56:45,949 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1135 transitions. Word has length 206 [2024-11-16 11:56:45,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:45,950 INFO L471 AbstractCegarLoop]: Abstraction has 788 states and 1135 transitions. [2024-11-16 11:56:45,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.846153846153847) internal successors, (206), 13 states have internal predecessors, (206), 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) [2024-11-16 11:56:45,950 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1135 transitions. [2024-11-16 11:56:45,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-16 11:56:45,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:45,955 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:45,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 11:56:46,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:56:46,156 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:46,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:46,157 INFO L85 PathProgramCache]: Analyzing trace with hash -2068253456, now seen corresponding path program 1 times [2024-11-16 11:56:46,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:46,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662572727] [2024-11-16 11:56:46,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:46,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:48,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:48,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662572727] [2024-11-16 11:56:48,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662572727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:56:48,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11226067] [2024-11-16 11:56:48,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:48,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:56:48,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:56:48,009 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) [2024-11-16 11:56:48,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 11:56:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:48,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-16 11:56:48,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:56:49,938 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:49,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:56:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:51,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11226067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:56:51,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:56:51,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 13] total 40 [2024-11-16 11:56:51,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002723691] [2024-11-16 11:56:51,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:56:51,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-16 11:56:51,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:51,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-16 11:56:51,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1409, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 11:56:51,252 INFO L87 Difference]: Start difference. First operand 788 states and 1135 transitions. Second operand has 40 states, 40 states have (on average 15.05) internal successors, (602), 40 states have internal predecessors, (602), 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) [2024-11-16 11:56:54,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:54,130 INFO L93 Difference]: Finished difference Result 1758 states and 2557 transitions. [2024-11-16 11:56:54,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-16 11:56:54,130 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 15.05) internal successors, (602), 40 states have internal predecessors, (602), 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 206 [2024-11-16 11:56:54,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:54,134 INFO L225 Difference]: With dead ends: 1758 [2024-11-16 11:56:54,134 INFO L226 Difference]: Without dead ends: 1332 [2024-11-16 11:56:54,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2192 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=994, Invalid=8126, Unknown=0, NotChecked=0, Total=9120 [2024-11-16 11:56:54,138 INFO L432 NwaCegarLoop]: 400 mSDtfsCounter, 4481 mSDsluCounter, 10424 mSDsCounter, 0 mSdLazyCounter, 3333 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4481 SdHoareTripleChecker+Valid, 10824 SdHoareTripleChecker+Invalid, 3350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:54,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4481 Valid, 10824 Invalid, 3350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3333 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 11:56:54,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2024-11-16 11:56:54,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1057. [2024-11-16 11:56:54,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 1.4356060606060606) internal successors, (1516), 1056 states have internal predecessors, (1516), 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) [2024-11-16 11:56:54,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1516 transitions. [2024-11-16 11:56:54,153 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1516 transitions. Word has length 206 [2024-11-16 11:56:54,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:54,154 INFO L471 AbstractCegarLoop]: Abstraction has 1057 states and 1516 transitions. [2024-11-16 11:56:54,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 15.05) internal successors, (602), 40 states have internal predecessors, (602), 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) [2024-11-16 11:56:54,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1516 transitions. [2024-11-16 11:56:54,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-16 11:56:54,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:54,159 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:54,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 11:56:54,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 11:56:54,360 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:54,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:54,362 INFO L85 PathProgramCache]: Analyzing trace with hash 808073448, now seen corresponding path program 1 times [2024-11-16 11:56:54,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:54,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633736863] [2024-11-16 11:56:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:54,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:55,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:55,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633736863] [2024-11-16 11:56:55,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633736863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:55,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:55,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 11:56:55,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636760777] [2024-11-16 11:56:55,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:55,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 11:56:55,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:55,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 11:56:55,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-16 11:56:55,163 INFO L87 Difference]: Start difference. First operand 1057 states and 1516 transitions. Second operand has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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) [2024-11-16 11:56:55,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:55,521 INFO L93 Difference]: Finished difference Result 2001 states and 2883 transitions. [2024-11-16 11:56:55,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 11:56:55,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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 207 [2024-11-16 11:56:55,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:55,526 INFO L225 Difference]: With dead ends: 2001 [2024-11-16 11:56:55,526 INFO L226 Difference]: Without dead ends: 1517 [2024-11-16 11:56:55,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-16 11:56:55,527 INFO L432 NwaCegarLoop]: 656 mSDtfsCounter, 929 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:55,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 2360 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 11:56:55,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2024-11-16 11:56:55,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1346. [2024-11-16 11:56:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 1.4319702602230484) internal successors, (1926), 1345 states have internal predecessors, (1926), 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) [2024-11-16 11:56:55,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1926 transitions. [2024-11-16 11:56:55,543 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1926 transitions. Word has length 207 [2024-11-16 11:56:55,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:55,543 INFO L471 AbstractCegarLoop]: Abstraction has 1346 states and 1926 transitions. [2024-11-16 11:56:55,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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) [2024-11-16 11:56:55,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1926 transitions. [2024-11-16 11:56:55,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-16 11:56:55,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:55,545 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:55,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 11:56:55,545 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:55,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:55,546 INFO L85 PathProgramCache]: Analyzing trace with hash 2007488225, now seen corresponding path program 1 times [2024-11-16 11:56:55,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:55,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020590708] [2024-11-16 11:56:55,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:55,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:56,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:56,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020590708] [2024-11-16 11:56:56,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020590708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 11:56:56,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 11:56:56,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 11:56:56,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589970870] [2024-11-16 11:56:56,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 11:56:56,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 11:56:56,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:56:56,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 11:56:56,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 11:56:56,952 INFO L87 Difference]: Start difference. First operand 1346 states and 1926 transitions. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 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) [2024-11-16 11:56:57,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:56:57,125 INFO L93 Difference]: Finished difference Result 2180 states and 3137 transitions. [2024-11-16 11:56:57,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 11:56:57,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 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 208 [2024-11-16 11:56:57,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:56:57,129 INFO L225 Difference]: With dead ends: 2180 [2024-11-16 11:56:57,129 INFO L226 Difference]: Without dead ends: 1360 [2024-11-16 11:56:57,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 11:56:57,130 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 380 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 11:56:57,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 1258 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 11:56:57,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2024-11-16 11:56:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1358. [2024-11-16 11:56:57,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 1.4281503316138542) internal successors, (1938), 1357 states have internal predecessors, (1938), 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) [2024-11-16 11:56:57,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1938 transitions. [2024-11-16 11:56:57,145 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1938 transitions. Word has length 208 [2024-11-16 11:56:57,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:56:57,145 INFO L471 AbstractCegarLoop]: Abstraction has 1358 states and 1938 transitions. [2024-11-16 11:56:57,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 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) [2024-11-16 11:56:57,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1938 transitions. [2024-11-16 11:56:57,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-16 11:56:57,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:56:57,147 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:56:57,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 11:56:57,147 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:56:57,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:56:57,147 INFO L85 PathProgramCache]: Analyzing trace with hash -29322332, now seen corresponding path program 1 times [2024-11-16 11:56:57,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:56:57,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736666087] [2024-11-16 11:56:57,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:57,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:56:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:58,825 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:56:58,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:56:58,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736666087] [2024-11-16 11:56:58,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736666087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:56:58,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128247370] [2024-11-16 11:56:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:56:58,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:56:58,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:56:58,831 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) [2024-11-16 11:56:58,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 11:56:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:56:59,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 147 conjuncts are in the unsatisfiable core [2024-11-16 11:56:59,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:57:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:57:02,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:57:05,099 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:57:05,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128247370] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:57:05,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:57:05,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 26, 21] total 56 [2024-11-16 11:57:05,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414428790] [2024-11-16 11:57:05,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:57:05,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-16 11:57:05,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:57:05,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-16 11:57:05,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=2793, Unknown=0, NotChecked=0, Total=3080 [2024-11-16 11:57:05,102 INFO L87 Difference]: Start difference. First operand 1358 states and 1938 transitions. Second operand has 56 states, 56 states have (on average 10.964285714285714) internal successors, (614), 56 states have internal predecessors, (614), 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) [2024-11-16 11:57:26,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:57:26,450 INFO L93 Difference]: Finished difference Result 3568 states and 5124 transitions. [2024-11-16 11:57:26,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-16 11:57:26,451 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 10.964285714285714) internal successors, (614), 56 states have internal predecessors, (614), 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 209 [2024-11-16 11:57:26,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:57:26,458 INFO L225 Difference]: With dead ends: 3568 [2024-11-16 11:57:26,458 INFO L226 Difference]: Without dead ends: 3059 [2024-11-16 11:57:26,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10395 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=3047, Invalid=26023, Unknown=0, NotChecked=0, Total=29070 [2024-11-16 11:57:26,465 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 6552 mSDsluCounter, 12593 mSDsCounter, 0 mSdLazyCounter, 16220 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6552 SdHoareTripleChecker+Valid, 12882 SdHoareTripleChecker+Invalid, 16270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 16220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2024-11-16 11:57:26,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6552 Valid, 12882 Invalid, 16270 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 16220 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2024-11-16 11:57:26,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2024-11-16 11:57:26,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 1415. [2024-11-16 11:57:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1414 states have (on average 1.4363507779349363) internal successors, (2031), 1414 states have internal predecessors, (2031), 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) [2024-11-16 11:57:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 2031 transitions. [2024-11-16 11:57:26,488 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 2031 transitions. Word has length 209 [2024-11-16 11:57:26,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:57:26,488 INFO L471 AbstractCegarLoop]: Abstraction has 1415 states and 2031 transitions. [2024-11-16 11:57:26,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 10.964285714285714) internal successors, (614), 56 states have internal predecessors, (614), 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) [2024-11-16 11:57:26,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 2031 transitions. [2024-11-16 11:57:26,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-16 11:57:26,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:57:26,490 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:57:26,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 11:57:26,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:57:26,695 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:57:26,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:57:26,696 INFO L85 PathProgramCache]: Analyzing trace with hash -457929382, now seen corresponding path program 1 times [2024-11-16 11:57:26,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:57:26,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935460934] [2024-11-16 11:57:26,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:57:26,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:57:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:57:28,151 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:57:28,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:57:28,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935460934] [2024-11-16 11:57:28,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935460934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:57:28,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718172085] [2024-11-16 11:57:28,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:57:28,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:57:28,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:57:28,153 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) [2024-11-16 11:57:28,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 11:57:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:57:28,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-16 11:57:28,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 11:57:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:57:29,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 11:57:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:57:30,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718172085] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 11:57:30,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 11:57:30,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19, 15] total 35 [2024-11-16 11:57:30,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172758356] [2024-11-16 11:57:30,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 11:57:30,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-16 11:57:30,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 11:57:30,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-16 11:57:30,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1016, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 11:57:30,393 INFO L87 Difference]: Start difference. First operand 1415 states and 2031 transitions. Second operand has 35 states, 35 states have (on average 12.742857142857142) internal successors, (446), 35 states have internal predecessors, (446), 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) [2024-11-16 11:57:32,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 11:57:32,378 INFO L93 Difference]: Finished difference Result 4052 states and 5870 transitions. [2024-11-16 11:57:32,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-16 11:57:32,379 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 12.742857142857142) internal successors, (446), 35 states have internal predecessors, (446), 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 209 [2024-11-16 11:57:32,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 11:57:32,387 INFO L225 Difference]: With dead ends: 4052 [2024-11-16 11:57:32,387 INFO L226 Difference]: Without dead ends: 3035 [2024-11-16 11:57:32,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 389 SyntacticMatches, 8 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1811 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=943, Invalid=4909, Unknown=0, NotChecked=0, Total=5852 [2024-11-16 11:57:32,391 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 4699 mSDsluCounter, 9852 mSDsCounter, 0 mSdLazyCounter, 2947 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4699 SdHoareTripleChecker+Valid, 10265 SdHoareTripleChecker+Invalid, 2954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 11:57:32,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4699 Valid, 10265 Invalid, 2954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2947 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 11:57:32,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2024-11-16 11:57:32,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 1966. [2024-11-16 11:57:32,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1965 states have (on average 1.4366412213740458) internal successors, (2823), 1965 states have internal predecessors, (2823), 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) [2024-11-16 11:57:32,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2823 transitions. [2024-11-16 11:57:32,425 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2823 transitions. Word has length 209 [2024-11-16 11:57:32,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 11:57:32,425 INFO L471 AbstractCegarLoop]: Abstraction has 1966 states and 2823 transitions. [2024-11-16 11:57:32,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 12.742857142857142) internal successors, (446), 35 states have internal predecessors, (446), 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) [2024-11-16 11:57:32,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2823 transitions. [2024-11-16 11:57:32,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-16 11:57:32,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 11:57:32,427 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 11:57:32,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 11:57:32,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:57:32,632 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 11:57:32,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 11:57:32,632 INFO L85 PathProgramCache]: Analyzing trace with hash -690107818, now seen corresponding path program 1 times [2024-11-16 11:57:32,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 11:57:32,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106130361] [2024-11-16 11:57:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:57:32,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 11:57:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 11:57:34,908 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 11:57:34,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 11:57:34,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106130361] [2024-11-16 11:57:34,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106130361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 11:57:34,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372546461] [2024-11-16 11:57:34,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 11:57:34,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 11:57:34,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 11:57:34,910 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) [2024-11-16 11:57:34,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process