./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label13.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 84be5ebe7d0e17b7dfbf14426aab6d066d24416ef8e3b409c38a918132f4bf30 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 16:27:07,784 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 16:27:07,838 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 16:27:07,841 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 16:27:07,842 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 16:27:07,867 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 16:27:07,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 16:27:07,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 16:27:07,870 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 16:27:07,870 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 16:27:07,870 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 16:27:07,870 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 16:27:07,871 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 16:27:07,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 16:27:07,871 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 16:27:07,871 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 16:27:07,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 16:27:07,872 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 16:27:07,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 16:27:07,874 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 16:27:07,876 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 16:27:07,877 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 16:27:07,877 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 16:27:07,877 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 16:27:07,877 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 16:27:07,877 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 16:27:07,877 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 16:27:07,878 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 16:27:07,878 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 16:27:07,878 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 16:27:07,878 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 16:27:07,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 16:27:07,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:27:07,879 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 16:27:07,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 16:27:07,879 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 16:27:07,879 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 16:27:07,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 16:27:07,879 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 16:27:07,880 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 16:27:07,880 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 16:27:07,882 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 16:27:07,882 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84be5ebe7d0e17b7dfbf14426aab6d066d24416ef8e3b409c38a918132f4bf30 [2024-10-12 16:27:08,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 16:27:08,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 16:27:08,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 16:27:08,156 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 16:27:08,156 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 16:27:08,157 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label13.c [2024-10-12 16:27:09,618 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 16:27:09,939 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 16:27:09,939 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label13.c [2024-10-12 16:27:09,955 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94eabf12c/644c80e3301345a99d3626c935586299/FLAG88a953307 [2024-10-12 16:27:10,193 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94eabf12c/644c80e3301345a99d3626c935586299 [2024-10-12 16:27:10,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 16:27:10,196 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 16:27:10,197 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 16:27:10,197 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 16:27:10,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 16:27:10,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:27:10" (1/1) ... [2024-10-12 16:27:10,205 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24bd21a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:10, skipping insertion in model container [2024-10-12 16:27:10,205 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:27:10" (1/1) ... [2024-10-12 16:27:10,269 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 16:27:10,478 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label13.c[4647,4660] [2024-10-12 16:27:10,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:27:11,003 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 16:27:11,032 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label13.c[4647,4660] [2024-10-12 16:27:11,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:27:11,267 INFO L204 MainTranslator]: Completed translation [2024-10-12 16:27:11,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:11 WrapperNode [2024-10-12 16:27:11,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 16:27:11,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 16:27:11,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 16:27:11,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 16:27:11,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:11" (1/1) ... [2024-10-12 16:27:11,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:11" (1/1) ... [2024-10-12 16:27:11,513 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-10-12 16:27:11,514 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 16:27:11,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 16:27:11,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 16:27:11,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 16:27:11,523 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:11" (1/1) ... [2024-10-12 16:27:11,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:11" (1/1) ... [2024-10-12 16:27:11,552 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:11" (1/1) ... [2024-10-12 16:27:11,727 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]. [2024-10-12 16:27:11,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:11" (1/1) ... [2024-10-12 16:27:11,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:11" (1/1) ... [2024-10-12 16:27:11,835 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:11" (1/1) ... [2024-10-12 16:27:11,858 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:11" (1/1) ... [2024-10-12 16:27:11,887 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:11" (1/1) ... [2024-10-12 16:27:11,901 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:11" (1/1) ... [2024-10-12 16:27:12,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 16:27:12,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 16:27:12,019 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 16:27:12,019 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 16:27:12,020 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:11" (1/1) ... [2024-10-12 16:27:12,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:27:12,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:27:12,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 16:27:12,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 16:27:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 16:27:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 16:27:12,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 16:27:12,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 16:27:12,161 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 16:27:12,163 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 16:27:14,710 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-10-12 16:27:14,710 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 16:27:14,761 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 16:27:14,762 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 16:27:14,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:27:14 BoogieIcfgContainer [2024-10-12 16:27:14,762 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 16:27:14,764 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 16:27:14,764 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 16:27:14,766 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 16:27:14,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:27:10" (1/3) ... [2024-10-12 16:27:14,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79031277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:27:14, skipping insertion in model container [2024-10-12 16:27:14,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:11" (2/3) ... [2024-10-12 16:27:14,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79031277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:27:14, skipping insertion in model container [2024-10-12 16:27:14,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:27:14" (3/3) ... [2024-10-12 16:27:14,769 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label13.c [2024-10-12 16:27:14,782 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 16:27:14,782 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 16:27:14,854 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 16:27:14,859 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;@5396d10b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 16:27:14,859 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 16:27:14,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 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) [2024-10-12 16:27:14,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-12 16:27:14,873 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:14,875 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] [2024-10-12 16:27:14,875 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:14,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:14,881 INFO L85 PathProgramCache]: Analyzing trace with hash 122835800, now seen corresponding path program 1 times [2024-10-12 16:27:14,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:14,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642895667] [2024-10-12 16:27:14,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:14,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:27:15,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:15,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642895667] [2024-10-12 16:27:15,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642895667] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:27:15,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:27:15,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:27:15,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555602059] [2024-10-12 16:27:15,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:27:15,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 16:27:15,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:15,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 16:27:15,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:27:15,045 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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) [2024-10-12 16:27:15,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:15,099 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2024-10-12 16:27:15,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 16:27:15,101 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 29 [2024-10-12 16:27:15,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:15,112 INFO L225 Difference]: With dead ends: 1055 [2024-10-12 16:27:15,112 INFO L226 Difference]: Without dead ends: 526 [2024-10-12 16:27:15,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:27:15,119 INFO L432 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:15,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 16:27:15,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-12 16:27:15,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-10-12 16:27:15,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 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) [2024-10-12 16:27:15,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2024-10-12 16:27:15,167 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 29 [2024-10-12 16:27:15,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:27:15,167 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2024-10-12 16:27:15,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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) [2024-10-12 16:27:15,168 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2024-10-12 16:27:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-12 16:27:15,168 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:15,169 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] [2024-10-12 16:27:15,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 16:27:15,169 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:15,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:15,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1781437967, now seen corresponding path program 1 times [2024-10-12 16:27:15,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:15,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48451873] [2024-10-12 16:27:15,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:15,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:27:15,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:15,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48451873] [2024-10-12 16:27:15,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48451873] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:27:15,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:27:15,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:27:15,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626165718] [2024-10-12 16:27:15,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:27:15,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:27:15,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:15,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:27:15,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:15,271 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2024-10-12 16:27:17,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:17,413 INFO L93 Difference]: Finished difference Result 1522 states and 2728 transitions. [2024-10-12 16:27:17,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:27:17,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 29 [2024-10-12 16:27:17,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:17,418 INFO L225 Difference]: With dead ends: 1522 [2024-10-12 16:27:17,418 INFO L226 Difference]: Without dead ends: 997 [2024-10-12 16:27:17,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:17,420 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 481 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:17,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 239 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-12 16:27:17,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2024-10-12 16:27:17,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 981. [2024-10-12 16:27:17,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.7081632653061225) internal successors, (1674), 980 states have internal predecessors, (1674), 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) [2024-10-12 16:27:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1674 transitions. [2024-10-12 16:27:17,449 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1674 transitions. Word has length 29 [2024-10-12 16:27:17,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:27:17,449 INFO L471 AbstractCegarLoop]: Abstraction has 981 states and 1674 transitions. [2024-10-12 16:27:17,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2024-10-12 16:27:17,450 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1674 transitions. [2024-10-12 16:27:17,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-12 16:27:17,451 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:17,452 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:27:17,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 16:27:17,452 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:17,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:17,453 INFO L85 PathProgramCache]: Analyzing trace with hash 667266048, now seen corresponding path program 1 times [2024-10-12 16:27:17,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:17,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76972955] [2024-10-12 16:27:17,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:17,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:17,602 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:27:17,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:17,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76972955] [2024-10-12 16:27:17,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76972955] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:27:17,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:27:17,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:27:17,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977089302] [2024-10-12 16:27:17,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:27:17,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:27:17,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:17,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:27:17,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:17,605 INFO L87 Difference]: Start difference. First operand 981 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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) [2024-10-12 16:27:19,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:19,469 INFO L93 Difference]: Finished difference Result 2840 states and 4880 transitions. [2024-10-12 16:27:19,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:27:19,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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 94 [2024-10-12 16:27:19,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:19,475 INFO L225 Difference]: With dead ends: 2840 [2024-10-12 16:27:19,476 INFO L226 Difference]: Without dead ends: 1860 [2024-10-12 16:27:19,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:19,478 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:19,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 494 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-12 16:27:19,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2024-10-12 16:27:19,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1856. [2024-10-12 16:27:19,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 1.4549865229110512) internal successors, (2699), 1855 states have internal predecessors, (2699), 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) [2024-10-12 16:27:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2699 transitions. [2024-10-12 16:27:19,518 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2699 transitions. Word has length 94 [2024-10-12 16:27:19,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:27:19,519 INFO L471 AbstractCegarLoop]: Abstraction has 1856 states and 2699 transitions. [2024-10-12 16:27:19,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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) [2024-10-12 16:27:19,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2699 transitions. [2024-10-12 16:27:19,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-10-12 16:27:19,522 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:19,523 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:27:19,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 16:27:19,523 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:19,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1376556341, now seen corresponding path program 1 times [2024-10-12 16:27:19,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:19,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982908964] [2024-10-12 16:27:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:19,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:19,913 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:27:19,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:19,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982908964] [2024-10-12 16:27:19,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982908964] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:27:19,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:27:19,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:27:19,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145513060] [2024-10-12 16:27:19,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:27:19,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:27:19,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:19,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:27:19,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:19,915 INFO L87 Difference]: Start difference. First operand 1856 states and 2699 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 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) [2024-10-12 16:27:21,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:21,909 INFO L93 Difference]: Finished difference Result 4590 states and 6639 transitions. [2024-10-12 16:27:21,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:27:21,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 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 134 [2024-10-12 16:27:21,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:21,922 INFO L225 Difference]: With dead ends: 4590 [2024-10-12 16:27:21,922 INFO L226 Difference]: Without dead ends: 2735 [2024-10-12 16:27:21,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:21,926 INFO L432 NwaCegarLoop]: 473 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:21,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 535 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-12 16:27:21,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2024-10-12 16:27:21,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 2715. [2024-10-12 16:27:21,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2714 states have (on average 1.3909358879882092) internal successors, (3775), 2714 states have internal predecessors, (3775), 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) [2024-10-12 16:27:21,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 3775 transitions. [2024-10-12 16:27:21,964 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 3775 transitions. Word has length 134 [2024-10-12 16:27:21,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:27:21,965 INFO L471 AbstractCegarLoop]: Abstraction has 2715 states and 3775 transitions. [2024-10-12 16:27:21,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 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) [2024-10-12 16:27:21,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 3775 transitions. [2024-10-12 16:27:21,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-10-12 16:27:21,967 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:21,967 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:27:21,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 16:27:21,968 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:21,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:21,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1101877126, now seen corresponding path program 1 times [2024-10-12 16:27:21,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:21,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803361089] [2024-10-12 16:27:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:21,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:22,116 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:27:22,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:22,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803361089] [2024-10-12 16:27:22,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803361089] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:27:22,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:27:22,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:27:22,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306916863] [2024-10-12 16:27:22,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:27:22,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:27:22,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:22,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:27:22,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:22,119 INFO L87 Difference]: Start difference. First operand 2715 states and 3775 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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) [2024-10-12 16:27:23,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:23,771 INFO L93 Difference]: Finished difference Result 6708 states and 9428 transitions. [2024-10-12 16:27:23,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:27:23,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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 140 [2024-10-12 16:27:23,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:23,783 INFO L225 Difference]: With dead ends: 6708 [2024-10-12 16:27:23,783 INFO L226 Difference]: Without dead ends: 3994 [2024-10-12 16:27:23,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:23,787 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:23,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-12 16:27:23,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2024-10-12 16:27:23,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3141. [2024-10-12 16:27:23,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 3140 states have (on average 1.2745222929936306) internal successors, (4002), 3140 states have internal predecessors, (4002), 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) [2024-10-12 16:27:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 4002 transitions. [2024-10-12 16:27:23,831 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 4002 transitions. Word has length 140 [2024-10-12 16:27:23,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:27:23,831 INFO L471 AbstractCegarLoop]: Abstraction has 3141 states and 4002 transitions. [2024-10-12 16:27:23,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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) [2024-10-12 16:27:23,832 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 4002 transitions. [2024-10-12 16:27:23,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-10-12 16:27:23,833 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:23,834 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:27:23,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 16:27:23,834 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:23,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:23,834 INFO L85 PathProgramCache]: Analyzing trace with hash -525664546, now seen corresponding path program 1 times [2024-10-12 16:27:23,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:23,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795973451] [2024-10-12 16:27:23,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:23,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:27:24,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:24,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795973451] [2024-10-12 16:27:24,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795973451] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:27:24,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:27:24,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 16:27:24,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430041638] [2024-10-12 16:27:24,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:27:24,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 16:27:24,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:24,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 16:27:24,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:27:24,193 INFO L87 Difference]: Start difference. First operand 3141 states and 4002 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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) [2024-10-12 16:27:26,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:26,586 INFO L93 Difference]: Finished difference Result 8004 states and 10507 transitions. [2024-10-12 16:27:26,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:27:26,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 177 [2024-10-12 16:27:26,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:26,599 INFO L225 Difference]: With dead ends: 8004 [2024-10-12 16:27:26,599 INFO L226 Difference]: Without dead ends: 4864 [2024-10-12 16:27:26,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:27:26,604 INFO L432 NwaCegarLoop]: 763 mSDtfsCounter, 593 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 3094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:26,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 924 Invalid, 3094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-12 16:27:26,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4864 states. [2024-10-12 16:27:26,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4864 to 4851. [2024-10-12 16:27:26,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 4850 states have (on average 1.26659793814433) internal successors, (6143), 4850 states have internal predecessors, (6143), 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) [2024-10-12 16:27:26,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 6143 transitions. [2024-10-12 16:27:26,661 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 6143 transitions. Word has length 177 [2024-10-12 16:27:26,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:27:26,662 INFO L471 AbstractCegarLoop]: Abstraction has 4851 states and 6143 transitions. [2024-10-12 16:27:26,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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) [2024-10-12 16:27:26,662 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 6143 transitions. [2024-10-12 16:27:26,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-10-12 16:27:26,664 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:26,664 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:27:26,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 16:27:26,664 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:26,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:26,664 INFO L85 PathProgramCache]: Analyzing trace with hash -677198513, now seen corresponding path program 1 times [2024-10-12 16:27:26,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:26,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706250360] [2024-10-12 16:27:26,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:26,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-12 16:27:26,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:26,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706250360] [2024-10-12 16:27:26,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706250360] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:27:26,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:27:26,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:27:26,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147413174] [2024-10-12 16:27:26,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:27:26,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:27:26,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:26,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:27:26,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:26,770 INFO L87 Difference]: Start difference. First operand 4851 states and 6143 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-10-12 16:27:28,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:28,540 INFO L93 Difference]: Finished difference Result 12248 states and 15824 transitions. [2024-10-12 16:27:28,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:27:28,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 183 [2024-10-12 16:27:28,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:28,558 INFO L225 Difference]: With dead ends: 12248 [2024-10-12 16:27:28,558 INFO L226 Difference]: Without dead ends: 7398 [2024-10-12 16:27:28,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:28,564 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 417 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:28,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 543 Invalid, 1696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-12 16:27:28,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7398 states. [2024-10-12 16:27:28,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7398 to 4825. [2024-10-12 16:27:28,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4825 states, 4824 states have (on average 1.265339966832504) internal successors, (6104), 4824 states have internal predecessors, (6104), 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) [2024-10-12 16:27:28,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4825 states to 4825 states and 6104 transitions. [2024-10-12 16:27:28,633 INFO L78 Accepts]: Start accepts. Automaton has 4825 states and 6104 transitions. Word has length 183 [2024-10-12 16:27:28,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:27:28,633 INFO L471 AbstractCegarLoop]: Abstraction has 4825 states and 6104 transitions. [2024-10-12 16:27:28,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-10-12 16:27:28,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4825 states and 6104 transitions. [2024-10-12 16:27:28,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-10-12 16:27:28,636 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:28,636 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-12 16:27:28,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 16:27:28,636 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:28,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:28,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1784133131, now seen corresponding path program 1 times [2024-10-12 16:27:28,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:28,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940380748] [2024-10-12 16:27:28,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:28,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-12 16:27:28,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:28,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940380748] [2024-10-12 16:27:28,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940380748] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:27:28,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:27:28,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:27:28,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769156275] [2024-10-12 16:27:28,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:27:28,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:27:28,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:28,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:27:28,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:28,739 INFO L87 Difference]: Start difference. First operand 4825 states and 6104 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2024-10-12 16:27:30,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:30,527 INFO L93 Difference]: Finished difference Result 13485 states and 17136 transitions. [2024-10-12 16:27:30,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:27:30,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 196 [2024-10-12 16:27:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:30,561 INFO L225 Difference]: With dead ends: 13485 [2024-10-12 16:27:30,562 INFO L226 Difference]: Without dead ends: 7354 [2024-10-12 16:27:30,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:30,571 INFO L432 NwaCegarLoop]: 603 mSDtfsCounter, 563 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:30,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 632 Invalid, 1822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-12 16:27:30,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2024-10-12 16:27:30,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 6498. [2024-10-12 16:27:30,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6498 states, 6497 states have (on average 1.187163306141296) internal successors, (7713), 6497 states have internal predecessors, (7713), 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) [2024-10-12 16:27:30,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6498 states to 6498 states and 7713 transitions. [2024-10-12 16:27:30,706 INFO L78 Accepts]: Start accepts. Automaton has 6498 states and 7713 transitions. Word has length 196 [2024-10-12 16:27:30,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:27:30,706 INFO L471 AbstractCegarLoop]: Abstraction has 6498 states and 7713 transitions. [2024-10-12 16:27:30,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2024-10-12 16:27:30,706 INFO L276 IsEmpty]: Start isEmpty. Operand 6498 states and 7713 transitions. [2024-10-12 16:27:30,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-10-12 16:27:30,713 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:30,713 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:27:30,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 16:27:30,713 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:30,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:30,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1685445163, now seen corresponding path program 1 times [2024-10-12 16:27:30,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:30,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028723762] [2024-10-12 16:27:30,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:30,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-12 16:27:30,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:30,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028723762] [2024-10-12 16:27:30,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028723762] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:27:30,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:27:30,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:27:30,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349783674] [2024-10-12 16:27:30,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:27:30,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:27:30,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:30,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:27:30,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:30,975 INFO L87 Difference]: Start difference. First operand 6498 states and 7713 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2024-10-12 16:27:32,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:32,638 INFO L93 Difference]: Finished difference Result 14277 states and 16919 transitions. [2024-10-12 16:27:32,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:27:32,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 249 [2024-10-12 16:27:32,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:32,655 INFO L225 Difference]: With dead ends: 14277 [2024-10-12 16:27:32,655 INFO L226 Difference]: Without dead ends: 7780 [2024-10-12 16:27:32,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:32,662 INFO L432 NwaCegarLoop]: 757 mSDtfsCounter, 406 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:32,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 809 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-12 16:27:32,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7780 states. [2024-10-12 16:27:32,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7780 to 7350. [2024-10-12 16:27:32,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7350 states, 7349 states have (on average 1.179480201387944) internal successors, (8668), 7349 states have internal predecessors, (8668), 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) [2024-10-12 16:27:32,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7350 states to 7350 states and 8668 transitions. [2024-10-12 16:27:32,739 INFO L78 Accepts]: Start accepts. Automaton has 7350 states and 8668 transitions. Word has length 249 [2024-10-12 16:27:32,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:27:32,739 INFO L471 AbstractCegarLoop]: Abstraction has 7350 states and 8668 transitions. [2024-10-12 16:27:32,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2024-10-12 16:27:32,740 INFO L276 IsEmpty]: Start isEmpty. Operand 7350 states and 8668 transitions. [2024-10-12 16:27:32,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-10-12 16:27:32,742 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:32,743 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:27:32,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 16:27:32,743 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:32,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:32,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1244440595, now seen corresponding path program 1 times [2024-10-12 16:27:32,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:32,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303199168] [2024-10-12 16:27:32,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:32,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-12 16:27:32,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:32,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303199168] [2024-10-12 16:27:32,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303199168] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:27:32,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:27:32,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:27:32,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777419001] [2024-10-12 16:27:32,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:27:32,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:27:32,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:32,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:27:32,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:32,897 INFO L87 Difference]: Start difference. First operand 7350 states and 8668 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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) [2024-10-12 16:27:34,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:34,275 INFO L93 Difference]: Finished difference Result 18526 states and 21830 transitions. [2024-10-12 16:27:34,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:27:34,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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 267 [2024-10-12 16:27:34,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:34,302 INFO L225 Difference]: With dead ends: 18526 [2024-10-12 16:27:34,306 INFO L226 Difference]: Without dead ends: 11177 [2024-10-12 16:27:34,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:34,317 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 435 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:34,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 334 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 16:27:34,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11177 states. [2024-10-12 16:27:34,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11177 to 9899. [2024-10-12 16:27:34,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9899 states, 9898 states have (on average 1.1641745807233785) internal successors, (11523), 9898 states have internal predecessors, (11523), 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) [2024-10-12 16:27:34,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9899 states to 9899 states and 11523 transitions. [2024-10-12 16:27:34,424 INFO L78 Accepts]: Start accepts. Automaton has 9899 states and 11523 transitions. Word has length 267 [2024-10-12 16:27:34,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:27:34,424 INFO L471 AbstractCegarLoop]: Abstraction has 9899 states and 11523 transitions. [2024-10-12 16:27:34,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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) [2024-10-12 16:27:34,425 INFO L276 IsEmpty]: Start isEmpty. Operand 9899 states and 11523 transitions. [2024-10-12 16:27:34,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-10-12 16:27:34,428 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:34,429 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:27:34,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 16:27:34,430 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:34,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:34,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1302460218, now seen corresponding path program 1 times [2024-10-12 16:27:34,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:34,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879960882] [2024-10-12 16:27:34,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:34,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:34,768 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-12 16:27:34,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:34,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879960882] [2024-10-12 16:27:34,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879960882] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:27:34,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:27:34,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:27:34,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113331007] [2024-10-12 16:27:34,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:27:34,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:27:34,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:34,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:27:34,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:27:34,770 INFO L87 Difference]: Start difference. First operand 9899 states and 11523 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 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) [2024-10-12 16:27:37,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:37,030 INFO L93 Difference]: Finished difference Result 31341 states and 36567 transitions. [2024-10-12 16:27:37,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:27:37,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 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 289 [2024-10-12 16:27:37,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:37,103 INFO L225 Difference]: With dead ends: 31341 [2024-10-12 16:27:37,103 INFO L226 Difference]: Without dead ends: 20164 [2024-10-12 16:27:37,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:27:37,117 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 889 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:37,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 210 Invalid, 2821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-12 16:27:37,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20164 states. [2024-10-12 16:27:37,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20164 to 18857. [2024-10-12 16:27:37,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18857 states, 18856 states have (on average 1.1585171828595673) internal successors, (21845), 18856 states have internal predecessors, (21845), 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) [2024-10-12 16:27:37,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18857 states to 18857 states and 21845 transitions. [2024-10-12 16:27:37,340 INFO L78 Accepts]: Start accepts. Automaton has 18857 states and 21845 transitions. Word has length 289 [2024-10-12 16:27:37,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:27:37,340 INFO L471 AbstractCegarLoop]: Abstraction has 18857 states and 21845 transitions. [2024-10-12 16:27:37,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 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) [2024-10-12 16:27:37,341 INFO L276 IsEmpty]: Start isEmpty. Operand 18857 states and 21845 transitions. [2024-10-12 16:27:37,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2024-10-12 16:27:37,349 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:37,350 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:27:37,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 16:27:37,350 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:37,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:37,351 INFO L85 PathProgramCache]: Analyzing trace with hash -600519643, now seen corresponding path program 1 times [2024-10-12 16:27:37,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:37,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668948580] [2024-10-12 16:27:37,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:37,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 198 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 16:27:37,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:37,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668948580] [2024-10-12 16:27:37,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668948580] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:27:37,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342845292] [2024-10-12 16:27:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:37,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:27:37,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:27:37,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:27:37,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 16:27:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:37,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 16:27:37,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:27:38,257 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 155 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:27:38,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 16:27:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:27:38,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342845292] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 16:27:38,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 16:27:38,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2024-10-12 16:27:38,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715405154] [2024-10-12 16:27:38,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:27:38,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 16:27:38,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:38,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 16:27:38,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:27:38,687 INFO L87 Difference]: Start difference. First operand 18857 states and 21845 transitions. Second operand has 5 states, 5 states have (on average 74.0) internal successors, (370), 4 states have internal predecessors, (370), 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) [2024-10-12 16:27:41,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:41,641 INFO L93 Difference]: Finished difference Result 56886 states and 65970 transitions. [2024-10-12 16:27:41,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 16:27:41,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 74.0) internal successors, (370), 4 states have internal predecessors, (370), 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 370 [2024-10-12 16:27:41,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:41,725 INFO L225 Difference]: With dead ends: 56886 [2024-10-12 16:27:41,729 INFO L226 Difference]: Without dead ends: 37180 [2024-10-12 16:27:41,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 735 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:27:41,769 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 1575 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2573 mSolverCounterSat, 1072 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 3645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1072 IncrementalHoareTripleChecker+Valid, 2573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:41,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 133 Invalid, 3645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1072 Valid, 2573 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-12 16:27:41,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37180 states. [2024-10-12 16:27:42,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37180 to 36744. [2024-10-12 16:27:42,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36744 states, 36743 states have (on average 1.136161990038919) internal successors, (41746), 36743 states have internal predecessors, (41746), 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) [2024-10-12 16:27:42,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36744 states to 36744 states and 41746 transitions. [2024-10-12 16:27:42,295 INFO L78 Accepts]: Start accepts. Automaton has 36744 states and 41746 transitions. Word has length 370 [2024-10-12 16:27:42,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:27:42,296 INFO L471 AbstractCegarLoop]: Abstraction has 36744 states and 41746 transitions. [2024-10-12 16:27:42,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.0) internal successors, (370), 4 states have internal predecessors, (370), 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) [2024-10-12 16:27:42,296 INFO L276 IsEmpty]: Start isEmpty. Operand 36744 states and 41746 transitions. [2024-10-12 16:27:42,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-10-12 16:27:42,304 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:42,305 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2024-10-12 16:27:42,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 16:27:42,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-12 16:27:42,506 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:42,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:42,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1742095035, now seen corresponding path program 1 times [2024-10-12 16:27:42,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:42,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808910771] [2024-10-12 16:27:42,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:42,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 84 proven. 266 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 16:27:43,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:43,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808910771] [2024-10-12 16:27:43,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808910771] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:27:43,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032488996] [2024-10-12 16:27:43,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:43,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:27:43,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:27:43,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:27:43,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 16:27:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:43,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 16:27:43,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:27:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 242 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 16:27:44,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 16:27:44,888 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 242 proven. 82 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 16:27:44,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032488996] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 16:27:44,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 16:27:44,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-10-12 16:27:44,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720892083] [2024-10-12 16:27:44,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 16:27:44,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 16:27:44,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:44,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 16:27:44,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-12 16:27:44,892 INFO L87 Difference]: Start difference. First operand 36744 states and 41746 transitions. Second operand has 10 states, 10 states have (on average 95.7) internal successors, (957), 9 states have internal predecessors, (957), 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) [2024-10-12 16:27:52,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:52,129 INFO L93 Difference]: Finished difference Result 118663 states and 134592 transitions. [2024-10-12 16:27:52,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 16:27:52,129 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 95.7) internal successors, (957), 9 states have internal predecessors, (957), 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 413 [2024-10-12 16:27:52,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:52,216 INFO L225 Difference]: With dead ends: 118663 [2024-10-12 16:27:52,216 INFO L226 Difference]: Without dead ends: 81920 [2024-10-12 16:27:52,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 822 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-10-12 16:27:52,243 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 5518 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 9626 mSolverCounterSat, 909 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5518 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 10535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 909 IncrementalHoareTripleChecker+Valid, 9626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:52,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5518 Valid, 503 Invalid, 10535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [909 Valid, 9626 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-10-12 16:27:52,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81920 states. [2024-10-12 16:27:52,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81920 to 78062. [2024-10-12 16:27:52,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78062 states, 78061 states have (on average 1.1161143208516418) internal successors, (87125), 78061 states have internal predecessors, (87125), 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) [2024-10-12 16:27:52,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78062 states to 78062 states and 87125 transitions. [2024-10-12 16:27:52,983 INFO L78 Accepts]: Start accepts. Automaton has 78062 states and 87125 transitions. Word has length 413 [2024-10-12 16:27:52,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:27:52,983 INFO L471 AbstractCegarLoop]: Abstraction has 78062 states and 87125 transitions. [2024-10-12 16:27:52,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.7) internal successors, (957), 9 states have internal predecessors, (957), 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) [2024-10-12 16:27:52,984 INFO L276 IsEmpty]: Start isEmpty. Operand 78062 states and 87125 transitions. [2024-10-12 16:27:52,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-10-12 16:27:52,991 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:52,991 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:27:53,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 16:27:53,191 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,SelfDestructingSolverStorable12 [2024-10-12 16:27:53,192 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:53,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:53,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1200490449, now seen corresponding path program 1 times [2024-10-12 16:27:53,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:53,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303443098] [2024-10-12 16:27:53,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:53,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2024-10-12 16:27:54,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:54,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303443098] [2024-10-12 16:27:54,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303443098] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:27:54,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:27:54,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:27:54,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791320858] [2024-10-12 16:27:54,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:27:54,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:27:54,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:54,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:27:54,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:54,048 INFO L87 Difference]: Start difference. First operand 78062 states and 87125 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2024-10-12 16:27:55,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:55,668 INFO L93 Difference]: Finished difference Result 161223 states and 179982 transitions. [2024-10-12 16:27:55,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:27:55,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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 474 [2024-10-12 16:27:55,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:55,780 INFO L225 Difference]: With dead ends: 161223 [2024-10-12 16:27:55,780 INFO L226 Difference]: Without dead ends: 84012 [2024-10-12 16:27:55,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:55,841 INFO L432 NwaCegarLoop]: 681 mSDtfsCounter, 277 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:55,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 728 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 16:27:56,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84012 states. [2024-10-12 16:27:56,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84012 to 80187. [2024-10-12 16:27:56,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80187 states, 80186 states have (on average 1.114072281944479) internal successors, (89333), 80186 states have internal predecessors, (89333), 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) [2024-10-12 16:27:56,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80187 states to 80187 states and 89333 transitions. [2024-10-12 16:27:56,808 INFO L78 Accepts]: Start accepts. Automaton has 80187 states and 89333 transitions. Word has length 474 [2024-10-12 16:27:56,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:27:56,809 INFO L471 AbstractCegarLoop]: Abstraction has 80187 states and 89333 transitions. [2024-10-12 16:27:56,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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) [2024-10-12 16:27:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 80187 states and 89333 transitions. [2024-10-12 16:27:56,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2024-10-12 16:27:56,973 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:56,974 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:27:56,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 16:27:56,975 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:56,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:56,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2132374493, now seen corresponding path program 1 times [2024-10-12 16:27:56,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:56,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888580392] [2024-10-12 16:27:56,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:56,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-12 16:27:57,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:57,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888580392] [2024-10-12 16:27:57,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888580392] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:27:57,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:27:57,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:27:57,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627682654] [2024-10-12 16:27:57,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:27:57,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:27:57,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:57,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:27:57,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:57,501 INFO L87 Difference]: Start difference. First operand 80187 states and 89333 transitions. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2024-10-12 16:27:59,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:59,181 INFO L93 Difference]: Finished difference Result 169335 states and 188802 transitions. [2024-10-12 16:27:59,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:27:59,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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 541 [2024-10-12 16:27:59,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:59,447 INFO L225 Difference]: With dead ends: 169335 [2024-10-12 16:27:59,447 INFO L226 Difference]: Without dead ends: 89149 [2024-10-12 16:27:59,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:59,472 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 412 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:59,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 228 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 16:27:59,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89149 states. [2024-10-12 16:28:00,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89149 to 89140. [2024-10-12 16:28:00,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89140 states, 89139 states have (on average 1.1107596001750075) internal successors, (99012), 89139 states have internal predecessors, (99012), 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) [2024-10-12 16:28:00,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89140 states to 89140 states and 99012 transitions. [2024-10-12 16:28:00,846 INFO L78 Accepts]: Start accepts. Automaton has 89140 states and 99012 transitions. Word has length 541 [2024-10-12 16:28:00,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:00,847 INFO L471 AbstractCegarLoop]: Abstraction has 89140 states and 99012 transitions. [2024-10-12 16:28:00,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2024-10-12 16:28:00,847 INFO L276 IsEmpty]: Start isEmpty. Operand 89140 states and 99012 transitions. [2024-10-12 16:28:00,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2024-10-12 16:28:00,880 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:00,880 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:28:00,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 16:28:00,880 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:00,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:00,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1133312665, now seen corresponding path program 1 times [2024-10-12 16:28:00,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:00,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109765086] [2024-10-12 16:28:00,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:00,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2024-10-12 16:28:01,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:01,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109765086] [2024-10-12 16:28:01,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109765086] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:01,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:28:01,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:28:01,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542864113] [2024-10-12 16:28:01,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:01,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:28:01,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:01,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:28:01,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:01,196 INFO L87 Difference]: Start difference. First operand 89140 states and 99012 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2024-10-12 16:28:03,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:03,014 INFO L93 Difference]: Finished difference Result 195722 states and 216956 transitions. [2024-10-12 16:28:03,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:28:03,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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 543 [2024-10-12 16:28:03,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:03,165 INFO L225 Difference]: With dead ends: 195722 [2024-10-12 16:28:03,166 INFO L226 Difference]: Without dead ends: 107008 [2024-10-12 16:28:03,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:03,218 INFO L432 NwaCegarLoop]: 604 mSDtfsCounter, 485 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:03,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 641 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 16:28:03,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107008 states. [2024-10-12 16:28:04,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107008 to 106997. [2024-10-12 16:28:04,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106997 states, 106996 states have (on average 1.0891622116714643) internal successors, (116536), 106996 states have internal predecessors, (116536), 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) [2024-10-12 16:28:04,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106997 states to 106997 states and 116536 transitions. [2024-10-12 16:28:04,741 INFO L78 Accepts]: Start accepts. Automaton has 106997 states and 116536 transitions. Word has length 543 [2024-10-12 16:28:04,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:04,741 INFO L471 AbstractCegarLoop]: Abstraction has 106997 states and 116536 transitions. [2024-10-12 16:28:04,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2024-10-12 16:28:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 106997 states and 116536 transitions. [2024-10-12 16:28:04,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2024-10-12 16:28:04,756 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:04,756 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:28:04,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 16:28:04,757 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:04,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:04,757 INFO L85 PathProgramCache]: Analyzing trace with hash -63852057, now seen corresponding path program 1 times [2024-10-12 16:28:04,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:04,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711716370] [2024-10-12 16:28:04,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:04,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:05,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 493 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2024-10-12 16:28:05,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:05,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711716370] [2024-10-12 16:28:05,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711716370] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:05,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:28:05,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:28:05,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204054127] [2024-10-12 16:28:05,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:05,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:28:05,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:05,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:28:05,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:28:05,899 INFO L87 Difference]: Start difference. First operand 106997 states and 116536 transitions. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 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) [2024-10-12 16:28:08,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:08,863 INFO L93 Difference]: Finished difference Result 238710 states and 259334 transitions. [2024-10-12 16:28:08,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:28:08,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 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 596 [2024-10-12 16:28:08,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:09,041 INFO L225 Difference]: With dead ends: 238710 [2024-10-12 16:28:09,041 INFO L226 Difference]: Without dead ends: 131289 [2024-10-12 16:28:09,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:28:09,123 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 824 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:09,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 155 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-12 16:28:09,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131289 states. [2024-10-12 16:28:10,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131289 to 118905. [2024-10-12 16:28:10,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118905 states, 118904 states have (on average 1.0874739285473995) internal successors, (129305), 118904 states have internal predecessors, (129305), 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) [2024-10-12 16:28:10,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118905 states to 118905 states and 129305 transitions. [2024-10-12 16:28:10,873 INFO L78 Accepts]: Start accepts. Automaton has 118905 states and 129305 transitions. Word has length 596 [2024-10-12 16:28:10,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:10,874 INFO L471 AbstractCegarLoop]: Abstraction has 118905 states and 129305 transitions. [2024-10-12 16:28:10,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 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) [2024-10-12 16:28:10,874 INFO L276 IsEmpty]: Start isEmpty. Operand 118905 states and 129305 transitions. [2024-10-12 16:28:10,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2024-10-12 16:28:10,891 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:10,892 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:28:10,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 16:28:10,892 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:10,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:10,892 INFO L85 PathProgramCache]: Analyzing trace with hash 713346071, now seen corresponding path program 1 times [2024-10-12 16:28:10,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:10,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209845887] [2024-10-12 16:28:10,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:10,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 754 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-10-12 16:28:11,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:11,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209845887] [2024-10-12 16:28:11,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209845887] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:11,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:28:11,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:28:11,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839900814] [2024-10-12 16:28:11,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:11,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:28:11,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:11,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:28:11,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:11,602 INFO L87 Difference]: Start difference. First operand 118905 states and 129305 transitions. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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) [2024-10-12 16:28:13,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:13,529 INFO L93 Difference]: Finished difference Result 255268 states and 278204 transitions. [2024-10-12 16:28:13,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:28:13,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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 598 [2024-10-12 16:28:13,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:13,693 INFO L225 Difference]: With dead ends: 255268 [2024-10-12 16:28:13,693 INFO L226 Difference]: Without dead ends: 136789 [2024-10-12 16:28:13,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:13,763 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 265 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:13,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 263 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 16:28:13,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136789 states. [2024-10-12 16:28:15,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136789 to 126989. [2024-10-12 16:28:15,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126989 states, 126988 states have (on average 1.0804879201184363) internal successors, (137209), 126988 states have internal predecessors, (137209), 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) [2024-10-12 16:28:15,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126989 states to 126989 states and 137209 transitions. [2024-10-12 16:28:15,958 INFO L78 Accepts]: Start accepts. Automaton has 126989 states and 137209 transitions. Word has length 598 [2024-10-12 16:28:15,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:15,959 INFO L471 AbstractCegarLoop]: Abstraction has 126989 states and 137209 transitions. [2024-10-12 16:28:15,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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) [2024-10-12 16:28:15,959 INFO L276 IsEmpty]: Start isEmpty. Operand 126989 states and 137209 transitions. [2024-10-12 16:28:15,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2024-10-12 16:28:15,972 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:15,972 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2024-10-12 16:28:15,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 16:28:15,972 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:15,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:15,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1096731787, now seen corresponding path program 1 times [2024-10-12 16:28:15,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:15,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238125047] [2024-10-12 16:28:15,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:15,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 913 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-10-12 16:28:16,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:16,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238125047] [2024-10-12 16:28:16,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238125047] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:16,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:28:16,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:28:16,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009756249] [2024-10-12 16:28:16,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:16,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:28:16,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:16,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:28:16,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:28:16,971 INFO L87 Difference]: Start difference. First operand 126989 states and 137209 transitions. Second operand has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2024-10-12 16:28:19,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:19,342 INFO L93 Difference]: Finished difference Result 260367 states and 281172 transitions. [2024-10-12 16:28:19,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:28:19,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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 612 [2024-10-12 16:28:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:19,532 INFO L225 Difference]: With dead ends: 260367 [2024-10-12 16:28:19,533 INFO L226 Difference]: Without dead ends: 133804 [2024-10-12 16:28:19,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:28:19,611 INFO L432 NwaCegarLoop]: 611 mSDtfsCounter, 757 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2078 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 2078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:19,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 689 Invalid, 2292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 2078 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-12 16:28:19,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133804 states. [2024-10-12 16:28:21,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133804 to 128700. [2024-10-12 16:28:21,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128700 states, 128699 states have (on average 1.076542941281595) internal successors, (138550), 128699 states have internal predecessors, (138550), 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) [2024-10-12 16:28:21,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128700 states to 128700 states and 138550 transitions. [2024-10-12 16:28:21,703 INFO L78 Accepts]: Start accepts. Automaton has 128700 states and 138550 transitions. Word has length 612 [2024-10-12 16:28:21,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:21,704 INFO L471 AbstractCegarLoop]: Abstraction has 128700 states and 138550 transitions. [2024-10-12 16:28:21,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2024-10-12 16:28:21,704 INFO L276 IsEmpty]: Start isEmpty. Operand 128700 states and 138550 transitions. [2024-10-12 16:28:21,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2024-10-12 16:28:21,716 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:21,716 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:28:21,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 16:28:21,717 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:21,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:21,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1656310411, now seen corresponding path program 1 times [2024-10-12 16:28:21,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:21,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865087129] [2024-10-12 16:28:21,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:21,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:22,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 815 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-10-12 16:28:22,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:22,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865087129] [2024-10-12 16:28:22,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865087129] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:22,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:28:22,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:28:22,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563033515] [2024-10-12 16:28:22,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:22,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:28:22,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:22,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:28:22,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:22,424 INFO L87 Difference]: Start difference. First operand 128700 states and 138550 transitions. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2024-10-12 16:28:24,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:24,401 INFO L93 Difference]: Finished difference Result 271062 states and 291896 transitions. [2024-10-12 16:28:24,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:28:24,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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 640 [2024-10-12 16:28:24,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:24,587 INFO L225 Difference]: With dead ends: 271062 [2024-10-12 16:28:24,587 INFO L226 Difference]: Without dead ends: 142788 [2024-10-12 16:28:24,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:24,620 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 409 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:24,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 215 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 16:28:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142788 states. [2024-10-12 16:28:26,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142788 to 136787. [2024-10-12 16:28:26,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136787 states, 136786 states have (on average 1.0756437062272455) internal successors, (147133), 136786 states have internal predecessors, (147133), 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) [2024-10-12 16:28:26,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136787 states to 136787 states and 147133 transitions. [2024-10-12 16:28:26,979 INFO L78 Accepts]: Start accepts. Automaton has 136787 states and 147133 transitions. Word has length 640 [2024-10-12 16:28:26,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:26,979 INFO L471 AbstractCegarLoop]: Abstraction has 136787 states and 147133 transitions. [2024-10-12 16:28:26,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2024-10-12 16:28:26,980 INFO L276 IsEmpty]: Start isEmpty. Operand 136787 states and 147133 transitions. [2024-10-12 16:28:27,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2024-10-12 16:28:27,016 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:27,016 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:28:27,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 16:28:27,016 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:27,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:27,021 INFO L85 PathProgramCache]: Analyzing trace with hash -644242217, now seen corresponding path program 1 times [2024-10-12 16:28:27,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:27,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526240999] [2024-10-12 16:28:27,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:27,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1443 backedges. 805 proven. 0 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2024-10-12 16:28:27,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:27,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526240999] [2024-10-12 16:28:27,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526240999] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:27,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:28:27,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:28:27,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691670506] [2024-10-12 16:28:27,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:27,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:28:27,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:27,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:28:27,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:27,355 INFO L87 Difference]: Start difference. First operand 136787 states and 147133 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 2 states have internal predecessors, (321), 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) [2024-10-12 16:28:28,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:28,740 INFO L93 Difference]: Finished difference Result 243312 states and 261004 transitions. [2024-10-12 16:28:28,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:28:28,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 2 states have internal predecessors, (321), 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 697 [2024-10-12 16:28:28,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:28,865 INFO L225 Difference]: With dead ends: 243312 [2024-10-12 16:28:28,865 INFO L226 Difference]: Without dead ends: 106950 [2024-10-12 16:28:28,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:28,903 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 564 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:28,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 71 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:28:28,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106950 states. [2024-10-12 16:28:29,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106950 to 106515. [2024-10-12 16:28:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106515 states, 106514 states have (on average 1.0686013106258332) internal successors, (113821), 106514 states have internal predecessors, (113821), 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) [2024-10-12 16:28:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106515 states to 106515 states and 113821 transitions. [2024-10-12 16:28:30,152 INFO L78 Accepts]: Start accepts. Automaton has 106515 states and 113821 transitions. Word has length 697 [2024-10-12 16:28:30,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:30,152 INFO L471 AbstractCegarLoop]: Abstraction has 106515 states and 113821 transitions. [2024-10-12 16:28:30,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 2 states have internal predecessors, (321), 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) [2024-10-12 16:28:30,152 INFO L276 IsEmpty]: Start isEmpty. Operand 106515 states and 113821 transitions. [2024-10-12 16:28:30,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2024-10-12 16:28:30,166 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:30,166 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:28:30,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 16:28:30,167 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:30,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:30,167 INFO L85 PathProgramCache]: Analyzing trace with hash -965065625, now seen corresponding path program 1 times [2024-10-12 16:28:30,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:30,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361184964] [2024-10-12 16:28:30,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:30,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1212 backedges. 695 proven. 82 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-10-12 16:28:31,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:31,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361184964] [2024-10-12 16:28:31,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361184964] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:28:31,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358173255] [2024-10-12 16:28:31,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:31,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:28:31,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:28:31,709 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:28:31,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 16:28:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:31,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:28:31,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:28:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1212 backedges. 1043 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-10-12 16:28:32,527 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:28:32,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358173255] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:32,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:28:32,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2024-10-12 16:28:32,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975879237] [2024-10-12 16:28:32,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:32,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:28:32,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:32,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:28:32,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:28:32,529 INFO L87 Difference]: Start difference. First operand 106515 states and 113821 transitions. Second operand has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 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)