./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 68585835b92043bfb2f3c62590e96ff685993869f8a251aecd9fe4c8aaea0e1e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 21:44:49,894 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 21:44:49,945 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 21:44:49,949 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 21:44:49,949 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 21:44:49,970 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 21:44:49,970 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 21:44:49,971 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 21:44:49,971 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 21:44:49,972 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 21:44:49,972 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 21:44:49,972 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 21:44:49,973 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 21:44:49,973 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 21:44:49,973 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 21:44:49,974 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 21:44:49,974 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 21:44:49,975 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 21:44:49,975 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 21:44:49,975 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 21:44:49,976 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 21:44:49,977 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 21:44:49,977 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 21:44:49,978 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 21:44:49,978 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 21:44:49,978 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 21:44:49,979 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 21:44:49,979 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 21:44:49,979 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 21:44:49,980 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 21:44:49,980 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 21:44:49,980 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 21:44:49,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:44:49,981 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 21:44:49,981 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 21:44:49,981 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 21:44:49,982 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 21:44:49,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 21:44:49,982 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 21:44:49,982 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 21:44:49,982 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 21:44:49,986 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 21:44:49,986 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68585835b92043bfb2f3c62590e96ff685993869f8a251aecd9fe4c8aaea0e1e [2024-10-10 21:44:50,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 21:44:50,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 21:44:50,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 21:44:50,318 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 21:44:50,321 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 21:44:50,322 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i [2024-10-10 21:44:51,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 21:44:52,035 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 21:44:52,036 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i [2024-10-10 21:44:52,051 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/e089a61be/4badaacb49244f5fb834c2d05f3633bb/FLAG5fde19cad [2024-10-10 21:44:52,094 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/e089a61be/4badaacb49244f5fb834c2d05f3633bb [2024-10-10 21:44:52,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 21:44:52,098 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 21:44:52,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 21:44:52,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 21:44:52,108 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 21:44:52,109 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,110 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6d08fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52, skipping insertion in model container [2024-10-10 21:44:52,110 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,131 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 21:44:52,281 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/array-examples/sorting_bubblesort_ground-1.i[820,833] [2024-10-10 21:44:52,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:44:52,308 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 21:44:52,322 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/array-examples/sorting_bubblesort_ground-1.i[820,833] [2024-10-10 21:44:52,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:44:52,350 INFO L204 MainTranslator]: Completed translation [2024-10-10 21:44:52,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52 WrapperNode [2024-10-10 21:44:52,351 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 21:44:52,354 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 21:44:52,354 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 21:44:52,354 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 21:44:52,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,368 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,388 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2024-10-10 21:44:52,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 21:44:52,392 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 21:44:52,392 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 21:44:52,392 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 21:44:52,399 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,401 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,413 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-10 21:44:52,413 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,418 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,425 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 21:44:52,426 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 21:44:52,426 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 21:44:52,427 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 21:44:52,427 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (1/1) ... [2024-10-10 21:44:52,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:44:52,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:44:52,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 21:44:52,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 21:44:52,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 21:44:52,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 21:44:52,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 21:44:52,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 21:44:52,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 21:44:52,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 21:44:52,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 21:44:52,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 21:44:52,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 21:44:52,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 21:44:52,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 21:44:52,598 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 21:44:52,601 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 21:44:52,739 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-10-10 21:44:52,739 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 21:44:52,771 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 21:44:52,771 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-10 21:44:52,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:44:52 BoogieIcfgContainer [2024-10-10 21:44:52,772 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 21:44:52,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 21:44:52,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 21:44:52,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 21:44:52,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 09:44:52" (1/3) ... [2024-10-10 21:44:52,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671861d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:44:52, skipping insertion in model container [2024-10-10 21:44:52,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:44:52" (2/3) ... [2024-10-10 21:44:52,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671861d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:44:52, skipping insertion in model container [2024-10-10 21:44:52,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:44:52" (3/3) ... [2024-10-10 21:44:52,780 INFO L112 eAbstractionObserver]: Analyzing ICFG sorting_bubblesort_ground-1.i [2024-10-10 21:44:52,796 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 21:44:52,797 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 21:44:52,850 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 21:44:52,857 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;@4135896e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 21:44:52,858 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 21:44:52,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.8125) internal successors, (29), 17 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) [2024-10-10 21:44:52,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-10 21:44:52,869 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:44:52,870 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:44:52,870 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:44:52,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:44:52,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1612111142, now seen corresponding path program 1 times [2024-10-10 21:44:52,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:44:52,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031590856] [2024-10-10 21:44:52,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:52,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:44:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:53,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:44:53,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:44:53,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031590856] [2024-10-10 21:44:53,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031590856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:44:53,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 21:44:53,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 21:44:53,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744527835] [2024-10-10 21:44:53,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:44:53,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:44:53,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:44:53,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:44:53,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:44:53,078 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.8125) internal successors, (29), 17 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:53,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:44:53,109 INFO L93 Difference]: Finished difference Result 35 states and 57 transitions. [2024-10-10 21:44:53,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:44:53,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-10-10 21:44:53,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:44:53,119 INFO L225 Difference]: With dead ends: 35 [2024-10-10 21:44:53,119 INFO L226 Difference]: Without dead ends: 17 [2024-10-10 21:44:53,121 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 [2024-10-10 21:44:53,124 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:44:53,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:44:53,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-10 21:44:53,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-10 21:44:53,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:53,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-10-10 21:44:53,151 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 9 [2024-10-10 21:44:53,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:44:53,152 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-10-10 21:44:53,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:53,152 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2024-10-10 21:44:53,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-10 21:44:53,153 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:44:53,153 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:44:53,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 21:44:53,153 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:44:53,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:44:53,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1371244853, now seen corresponding path program 1 times [2024-10-10 21:44:53,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:44:53,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985026354] [2024-10-10 21:44:53,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:53,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:44:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:44:53,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:44:53,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985026354] [2024-10-10 21:44:53,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985026354] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:44:53,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158493917] [2024-10-10 21:44:53,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:53,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:53,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:44:53,247 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:44:53,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 21:44:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:53,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 21:44:53,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:44:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:44:53,352 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 21:44:53,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158493917] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:44:53,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 21:44:53,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-10 21:44:53,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324780312] [2024-10-10 21:44:53,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:44:53,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:44:53,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:44:53,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:44:53,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:44:53,356 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:53,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:44:53,376 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2024-10-10 21:44:53,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:44:53,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-10-10 21:44:53,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:44:53,377 INFO L225 Difference]: With dead ends: 30 [2024-10-10 21:44:53,377 INFO L226 Difference]: Without dead ends: 22 [2024-10-10 21:44:53,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:44:53,379 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:44:53,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 36 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:44:53,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-10 21:44:53,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-10-10 21:44:53,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 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) [2024-10-10 21:44:53,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2024-10-10 21:44:53,384 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 10 [2024-10-10 21:44:53,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:44:53,384 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2024-10-10 21:44:53,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:53,385 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2024-10-10 21:44:53,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-10 21:44:53,385 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:44:53,385 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:44:53,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-10 21:44:53,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:53,587 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:44:53,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:44:53,588 INFO L85 PathProgramCache]: Analyzing trace with hash 810154115, now seen corresponding path program 1 times [2024-10-10 21:44:53,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:44:53,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743802478] [2024-10-10 21:44:53,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:53,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:44:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:53,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:44:53,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:44:53,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743802478] [2024-10-10 21:44:53,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743802478] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:44:53,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014249658] [2024-10-10 21:44:53,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:53,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:53,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:44:53,679 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:44:53,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 21:44:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:53,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 21:44:53,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:44:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:44:53,781 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 21:44:53,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014249658] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:44:53,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 21:44:53,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-10 21:44:53,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477855387] [2024-10-10 21:44:53,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:44:53,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:44:53,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:44:53,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:44:53,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:44:53,789 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:53,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:44:53,819 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2024-10-10 21:44:53,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:44:53,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2024-10-10 21:44:53,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:44:53,821 INFO L225 Difference]: With dead ends: 44 [2024-10-10 21:44:53,821 INFO L226 Difference]: Without dead ends: 26 [2024-10-10 21:44:53,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:44:53,823 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:44:53,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:44:53,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-10 21:44:53,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2024-10-10 21:44:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:53,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2024-10-10 21:44:53,829 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 13 [2024-10-10 21:44:53,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:44:53,830 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2024-10-10 21:44:53,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:53,830 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2024-10-10 21:44:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-10 21:44:53,831 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:44:53,831 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:44:53,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-10 21:44:54,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:54,033 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:44:54,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:44:54,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1552667997, now seen corresponding path program 1 times [2024-10-10 21:44:54,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:44:54,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564074429] [2024-10-10 21:44:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:54,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:44:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:44:54,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:44:54,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564074429] [2024-10-10 21:44:54,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564074429] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:44:54,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504620288] [2024-10-10 21:44:54,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:54,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:54,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:44:54,139 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:44:54,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 21:44:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:54,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 21:44:54,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:44:54,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:44:54,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:44:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:44:54,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504620288] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:44:54,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:44:54,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-10 21:44:54,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193338996] [2024-10-10 21:44:54,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:44:54,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 21:44:54,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:44:54,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 21:44:54,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:44:54,256 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:54,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:44:54,279 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2024-10-10 21:44:54,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-10 21:44:54,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-10-10 21:44:54,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:44:54,280 INFO L225 Difference]: With dead ends: 46 [2024-10-10 21:44:54,280 INFO L226 Difference]: Without dead ends: 26 [2024-10-10 21:44:54,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:44:54,282 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:44:54,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:44:54,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-10 21:44:54,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-10-10 21:44:54,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:54,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2024-10-10 21:44:54,303 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 16 [2024-10-10 21:44:54,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:44:54,303 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2024-10-10 21:44:54,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:54,304 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-10-10 21:44:54,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-10 21:44:54,305 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:44:54,305 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:44:54,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 21:44:54,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:54,506 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:44:54,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:44:54,507 INFO L85 PathProgramCache]: Analyzing trace with hash -190909954, now seen corresponding path program 2 times [2024-10-10 21:44:54,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:44:54,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006888956] [2024-10-10 21:44:54,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:54,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:44:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-10 21:44:54,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:44:54,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006888956] [2024-10-10 21:44:54,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006888956] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:44:54,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463484625] [2024-10-10 21:44:54,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:44:54,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:54,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:44:54,617 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:44:54,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 21:44:54,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:44:54,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:44:54,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 21:44:54,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:44:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:44:54,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:44:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:44:54,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463484625] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:44:54,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:44:54,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2024-10-10 21:44:54,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296524624] [2024-10-10 21:44:54,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:44:54,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-10 21:44:54,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:44:54,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-10 21:44:54,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-10 21:44:54,824 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:54,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:44:54,877 INFO L93 Difference]: Finished difference Result 61 states and 85 transitions. [2024-10-10 21:44:54,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-10 21:44:54,879 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 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 19 [2024-10-10 21:44:54,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:44:54,879 INFO L225 Difference]: With dead ends: 61 [2024-10-10 21:44:54,879 INFO L226 Difference]: Without dead ends: 41 [2024-10-10 21:44:54,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-10 21:44:54,881 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:44:54,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 65 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:44:54,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-10 21:44:54,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2024-10-10 21:44:54,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:54,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2024-10-10 21:44:54,888 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 19 [2024-10-10 21:44:54,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:44:54,888 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2024-10-10 21:44:54,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:54,889 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2024-10-10 21:44:54,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-10 21:44:54,889 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:44:54,890 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:44:54,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-10 21:44:55,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:55,090 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:44:55,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:44:55,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1522098536, now seen corresponding path program 3 times [2024-10-10 21:44:55,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:44:55,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729394118] [2024-10-10 21:44:55,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:55,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:44:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:55,316 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 21:44:55,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:44:55,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729394118] [2024-10-10 21:44:55,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729394118] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:44:55,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685122283] [2024-10-10 21:44:55,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:44:55,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:55,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:44:55,339 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:44:55,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 21:44:55,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-10 21:44:55,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:44:55,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 21:44:55,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:44:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 21:44:55,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:44:55,496 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 21:44:55,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685122283] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:44:55,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:44:55,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-10-10 21:44:55,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78018535] [2024-10-10 21:44:55,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:44:55,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-10 21:44:55,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:44:55,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-10 21:44:55,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-10-10 21:44:55,501 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:55,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:44:55,562 INFO L93 Difference]: Finished difference Result 85 states and 116 transitions. [2024-10-10 21:44:55,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 21:44:55,564 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-10-10 21:44:55,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:44:55,565 INFO L225 Difference]: With dead ends: 85 [2024-10-10 21:44:55,565 INFO L226 Difference]: Without dead ends: 61 [2024-10-10 21:44:55,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-10-10 21:44:55,566 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:44:55,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:44:55,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-10 21:44:55,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-10 21:44:55,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 60 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:55,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2024-10-10 21:44:55,575 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 28 [2024-10-10 21:44:55,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:44:55,576 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2024-10-10 21:44:55,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:55,576 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2024-10-10 21:44:55,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-10 21:44:55,577 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:44:55,577 INFO L215 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:44:55,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-10 21:44:55,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:55,778 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:44:55,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:44:55,779 INFO L85 PathProgramCache]: Analyzing trace with hash -302265880, now seen corresponding path program 4 times [2024-10-10 21:44:55,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:44:55,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314937755] [2024-10-10 21:44:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:55,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:44:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-10 21:44:56,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:44:56,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314937755] [2024-10-10 21:44:56,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314937755] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:44:56,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096437668] [2024-10-10 21:44:56,119 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 21:44:56,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:56,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:44:56,121 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:44:56,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 21:44:56,225 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 21:44:56,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:44:56,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 21:44:56,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:44:56,368 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 21:44:56,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:44:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 21:44:56,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096437668] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:44:56,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:44:56,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-10-10 21:44:56,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251843064] [2024-10-10 21:44:56,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:44:56,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-10 21:44:56,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:44:56,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-10 21:44:56,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2024-10-10 21:44:56,551 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:56,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:44:56,671 INFO L93 Difference]: Finished difference Result 159 states and 223 transitions. [2024-10-10 21:44:56,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-10 21:44:56,672 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 states have internal predecessors, (69), 0 states have call successors, (0), 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 40 [2024-10-10 21:44:56,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:44:56,673 INFO L225 Difference]: With dead ends: 159 [2024-10-10 21:44:56,673 INFO L226 Difference]: Without dead ends: 110 [2024-10-10 21:44:56,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2024-10-10 21:44:56,675 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 35 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:44:56,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 85 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:44:56,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-10-10 21:44:56,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-10-10 21:44:56,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.3027522935779816) internal successors, (142), 109 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 142 transitions. [2024-10-10 21:44:56,691 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 142 transitions. Word has length 40 [2024-10-10 21:44:56,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:44:56,691 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 142 transitions. [2024-10-10 21:44:56,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:56,691 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 142 transitions. [2024-10-10 21:44:56,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-10 21:44:56,693 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:44:56,693 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:44:56,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-10 21:44:56,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-10 21:44:56,894 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:44:56,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:44:56,895 INFO L85 PathProgramCache]: Analyzing trace with hash 299109283, now seen corresponding path program 5 times [2024-10-10 21:44:56,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:44:56,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051477998] [2024-10-10 21:44:56,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:56,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:44:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-10-10 21:44:57,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:44:57,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051477998] [2024-10-10 21:44:57,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051477998] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:44:57,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154301180] [2024-10-10 21:44:57,294 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 21:44:57,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:57,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:44:57,296 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:44:57,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 21:44:57,454 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-10-10 21:44:57,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:44:57,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-10 21:44:57,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:44:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 1 proven. 287 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-10 21:44:57,818 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:44:58,336 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 1 proven. 287 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-10 21:44:58,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154301180] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:44:58,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:44:58,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 44 [2024-10-10 21:44:58,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892448277] [2024-10-10 21:44:58,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:44:58,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-10 21:44:58,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:44:58,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-10 21:44:58,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2024-10-10 21:44:58,345 INFO L87 Difference]: Start difference. First operand 110 states and 142 transitions. Second operand has 44 states, 44 states have (on average 2.6818181818181817) internal successors, (118), 44 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:58,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:44:58,570 INFO L93 Difference]: Finished difference Result 304 states and 432 transitions. [2024-10-10 21:44:58,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-10 21:44:58,571 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.6818181818181817) internal successors, (118), 44 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-10 21:44:58,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:44:58,573 INFO L225 Difference]: With dead ends: 304 [2024-10-10 21:44:58,573 INFO L226 Difference]: Without dead ends: 207 [2024-10-10 21:44:58,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2024-10-10 21:44:58,580 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 87 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 21:44:58,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 175 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 21:44:58,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-10-10 21:44:58,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-10-10 21:44:58,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.3155339805825244) internal successors, (271), 206 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:58,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 271 transitions. [2024-10-10 21:44:58,605 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 271 transitions. Word has length 65 [2024-10-10 21:44:58,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:44:58,605 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 271 transitions. [2024-10-10 21:44:58,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.6818181818181817) internal successors, (118), 44 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:44:58,606 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 271 transitions. [2024-10-10 21:44:58,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-10 21:44:58,609 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:44:58,609 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:44:58,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-10 21:44:58,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:58,810 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:44:58,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:44:58,811 INFO L85 PathProgramCache]: Analyzing trace with hash -683125688, now seen corresponding path program 6 times [2024-10-10 21:44:58,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:44:58,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975082682] [2024-10-10 21:44:58,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:44:58,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:44:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:44:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2024-10-10 21:44:59,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:44:59,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975082682] [2024-10-10 21:44:59,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975082682] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:44:59,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448509661] [2024-10-10 21:44:59,280 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 21:44:59,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:44:59,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:44:59,283 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:44:59,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 21:44:59,411 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-10-10 21:44:59,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:44:59,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-10 21:44:59,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:44:59,998 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 21:44:59,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-10-10 21:45:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 1 proven. 59 refuted. 0 times theorem prover too weak. 1354 trivial. 0 not checked. [2024-10-10 21:45:00,022 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:45:00,354 INFO L349 Elim1Store]: treesize reduction 13, result has 60.6 percent of original size [2024-10-10 21:45:00,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 28 [2024-10-10 21:45:00,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 1354 trivial. 0 not checked. [2024-10-10 21:45:00,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448509661] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:45:00,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:45:00,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 27 [2024-10-10 21:45:00,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081341802] [2024-10-10 21:45:00,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:45:00,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-10 21:45:00,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:00,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-10 21:45:00,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2024-10-10 21:45:00,413 INFO L87 Difference]: Start difference. First operand 207 states and 271 transitions. Second operand has 27 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 27 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:00,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:00,856 INFO L93 Difference]: Finished difference Result 413 states and 545 transitions. [2024-10-10 21:45:00,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-10 21:45:00,857 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 27 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-10-10 21:45:00,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:00,859 INFO L225 Difference]: With dead ends: 413 [2024-10-10 21:45:00,859 INFO L226 Difference]: Without dead ends: 220 [2024-10-10 21:45:00,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=394, Invalid=1498, Unknown=0, NotChecked=0, Total=1892 [2024-10-10 21:45:00,864 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 59 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:00,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 168 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 21:45:00,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-10-10 21:45:00,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 211. [2024-10-10 21:45:00,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.3095238095238095) internal successors, (275), 210 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:00,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 275 transitions. [2024-10-10 21:45:00,897 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 275 transitions. Word has length 114 [2024-10-10 21:45:00,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:00,897 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 275 transitions. [2024-10-10 21:45:00,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 27 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:00,898 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 275 transitions. [2024-10-10 21:45:00,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-10 21:45:00,901 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:00,901 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:00,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-10 21:45:01,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:01,102 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:01,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:01,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1663067282, now seen corresponding path program 1 times [2024-10-10 21:45:01,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:01,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569402632] [2024-10-10 21:45:01,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:01,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:01,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-10-10 21:45:01,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:01,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569402632] [2024-10-10 21:45:01,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569402632] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:45:01,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071427667] [2024-10-10 21:45:01,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:01,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:01,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:01,540 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:45:01,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-10 21:45:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:01,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-10 21:45:01,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:45:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-10-10 21:45:01,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:45:02,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-10-10 21:45:02,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071427667] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:45:02,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:45:02,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2024-10-10 21:45:02,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821182936] [2024-10-10 21:45:02,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:45:02,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-10 21:45:02,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:02,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-10 21:45:02,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2024-10-10 21:45:02,069 INFO L87 Difference]: Start difference. First operand 211 states and 275 transitions. Second operand has 31 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 30 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:02,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:02,112 INFO L93 Difference]: Finished difference Result 422 states and 564 transitions. [2024-10-10 21:45:02,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-10 21:45:02,113 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 30 states have internal predecessors, (47), 0 states have call successors, (0), 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 118 [2024-10-10 21:45:02,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:02,114 INFO L225 Difference]: With dead ends: 422 [2024-10-10 21:45:02,114 INFO L226 Difference]: Without dead ends: 226 [2024-10-10 21:45:02,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2024-10-10 21:45:02,116 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:02,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:45:02,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-10-10 21:45:02,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2024-10-10 21:45:02,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.288888888888889) internal successors, (290), 225 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 290 transitions. [2024-10-10 21:45:02,132 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 290 transitions. Word has length 118 [2024-10-10 21:45:02,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:02,133 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 290 transitions. [2024-10-10 21:45:02,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 30 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:02,133 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 290 transitions. [2024-10-10 21:45:02,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-10 21:45:02,135 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:02,135 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 28, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:02,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-10 21:45:02,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:02,340 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:02,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:02,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2096992841, now seen corresponding path program 2 times [2024-10-10 21:45:02,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:02,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834860409] [2024-10-10 21:45:02,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:02,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:03,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1744 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-10-10 21:45:03,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:03,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834860409] [2024-10-10 21:45:03,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834860409] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:45:03,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626080440] [2024-10-10 21:45:03,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:45:03,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:03,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:03,371 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:45:03,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-10 21:45:03,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:45:03,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:45:03,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-10 21:45:03,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:45:03,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1744 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-10-10 21:45:03,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:45:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1744 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-10-10 21:45:04,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626080440] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:45:04,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:45:04,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 60 [2024-10-10 21:45:04,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953216296] [2024-10-10 21:45:04,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:45:04,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-10-10 21:45:04,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:04,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-10-10 21:45:04,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2024-10-10 21:45:04,644 INFO L87 Difference]: Start difference. First operand 226 states and 290 transitions. Second operand has 61 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 60 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:04,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:04,711 INFO L93 Difference]: Finished difference Result 452 states and 609 transitions. [2024-10-10 21:45:04,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-10-10 21:45:04,712 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 60 states have internal predecessors, (77), 0 states have call successors, (0), 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 133 [2024-10-10 21:45:04,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:04,714 INFO L225 Difference]: With dead ends: 452 [2024-10-10 21:45:04,714 INFO L226 Difference]: Without dead ends: 256 [2024-10-10 21:45:04,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2024-10-10 21:45:04,716 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:04,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:45:04,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-10-10 21:45:04,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-10-10 21:45:04,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.2549019607843137) internal successors, (320), 255 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 320 transitions. [2024-10-10 21:45:04,741 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 320 transitions. Word has length 133 [2024-10-10 21:45:04,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:04,744 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 320 transitions. [2024-10-10 21:45:04,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 60 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:04,745 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 320 transitions. [2024-10-10 21:45:04,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-10-10 21:45:04,747 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:04,747 INFO L215 NwaCegarLoop]: trace histogram [58, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:04,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-10 21:45:04,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-10 21:45:04,952 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:04,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:04,953 INFO L85 PathProgramCache]: Analyzing trace with hash 86798249, now seen corresponding path program 3 times [2024-10-10 21:45:04,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:04,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061421432] [2024-10-10 21:45:04,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:04,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-10-10 21:45:07,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:07,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061421432] [2024-10-10 21:45:07,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061421432] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:45:07,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272641074] [2024-10-10 21:45:07,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:45:07,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:07,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:07,571 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:45:07,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-10 21:45:07,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-10-10 21:45:07,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:45:07,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-10 21:45:07,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:45:07,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-10 21:45:08,584 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 21:45:08,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2024-10-10 21:45:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 1 proven. 147 refuted. 0 times theorem prover too weak. 2901 trivial. 0 not checked. [2024-10-10 21:45:08,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:45:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 144 proven. 4 refuted. 0 times theorem prover too weak. 2901 trivial. 0 not checked. [2024-10-10 21:45:09,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272641074] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:45:09,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:45:09,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 12, 12] total 82 [2024-10-10 21:45:09,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846105330] [2024-10-10 21:45:09,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:45:09,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-10-10 21:45:09,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:09,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-10-10 21:45:09,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1938, Invalid=4704, Unknown=0, NotChecked=0, Total=6642 [2024-10-10 21:45:09,615 INFO L87 Difference]: Start difference. First operand 256 states and 320 transitions. Second operand has 82 states, 82 states have (on average 1.475609756097561) internal successors, (121), 82 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:12,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:12,179 INFO L93 Difference]: Finished difference Result 559 states and 722 transitions. [2024-10-10 21:45:12,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-10-10 21:45:12,180 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.475609756097561) internal successors, (121), 82 states have internal predecessors, (121), 0 states have call successors, (0), 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 163 [2024-10-10 21:45:12,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:12,183 INFO L225 Difference]: With dead ends: 559 [2024-10-10 21:45:12,183 INFO L226 Difference]: Without dead ends: 363 [2024-10-10 21:45:12,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3905 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=5678, Invalid=16374, Unknown=0, NotChecked=0, Total=22052 [2024-10-10 21:45:12,188 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 86 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:12,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 203 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 21:45:12,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-10-10 21:45:12,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 260. [2024-10-10 21:45:12,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.250965250965251) internal successors, (324), 259 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:12,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 324 transitions. [2024-10-10 21:45:12,205 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 324 transitions. Word has length 163 [2024-10-10 21:45:12,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:12,206 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 324 transitions. [2024-10-10 21:45:12,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.475609756097561) internal successors, (121), 82 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:12,206 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 324 transitions. [2024-10-10 21:45:12,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-10 21:45:12,208 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:12,208 INFO L215 NwaCegarLoop]: trace histogram [59, 30, 30, 30, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:12,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-10 21:45:12,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-10 21:45:12,409 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:12,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:12,409 INFO L85 PathProgramCache]: Analyzing trace with hash 464838339, now seen corresponding path program 4 times [2024-10-10 21:45:12,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:12,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605095294] [2024-10-10 21:45:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:12,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3113 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 1343 trivial. 0 not checked. [2024-10-10 21:45:14,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:14,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605095294] [2024-10-10 21:45:14,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605095294] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:45:14,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149500174] [2024-10-10 21:45:14,947 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 21:45:14,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:14,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:14,949 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:45:14,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-10 21:45:15,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 21:45:15,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:45:15,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-10 21:45:15,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:45:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3113 backedges. 1 proven. 1335 refuted. 0 times theorem prover too weak. 1777 trivial. 0 not checked. [2024-10-10 21:45:16,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:45:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3113 backedges. 1 proven. 1335 refuted. 0 times theorem prover too weak. 1777 trivial. 0 not checked. [2024-10-10 21:45:18,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149500174] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:45:18,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:45:18,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 33, 33] total 124 [2024-10-10 21:45:18,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25917668] [2024-10-10 21:45:18,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:45:18,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2024-10-10 21:45:18,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:18,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2024-10-10 21:45:18,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3906, Invalid=11346, Unknown=0, NotChecked=0, Total=15252 [2024-10-10 21:45:18,012 INFO L87 Difference]: Start difference. First operand 260 states and 324 transitions. Second operand has 124 states, 124 states have (on average 2.129032258064516) internal successors, (264), 124 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:18,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:18,408 INFO L93 Difference]: Finished difference Result 652 states and 908 transitions. [2024-10-10 21:45:18,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-10-10 21:45:18,408 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 2.129032258064516) internal successors, (264), 124 states have internal predecessors, (264), 0 states have call successors, (0), 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 167 [2024-10-10 21:45:18,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:18,412 INFO L225 Difference]: With dead ends: 652 [2024-10-10 21:45:18,412 INFO L226 Difference]: Without dead ends: 453 [2024-10-10 21:45:18,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3658 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3906, Invalid=11346, Unknown=0, NotChecked=0, Total=15252 [2024-10-10 21:45:18,416 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 240 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:18,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 122 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 21:45:18,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2024-10-10 21:45:18,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2024-10-10 21:45:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.2853982300884956) internal successors, (581), 452 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:18,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 581 transitions. [2024-10-10 21:45:18,435 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 581 transitions. Word has length 167 [2024-10-10 21:45:18,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:18,435 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 581 transitions. [2024-10-10 21:45:18,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 2.129032258064516) internal successors, (264), 124 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:18,436 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 581 transitions. [2024-10-10 21:45:18,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-10-10 21:45:18,438 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:18,438 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 60, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:18,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-10 21:45:18,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-10 21:45:18,639 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:18,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:18,640 INFO L85 PathProgramCache]: Analyzing trace with hash 191577512, now seen corresponding path program 5 times [2024-10-10 21:45:18,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:18,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445054688] [2024-10-10 21:45:18,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:18,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:21,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7573 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 5743 trivial. 0 not checked. [2024-10-10 21:45:21,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:21,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445054688] [2024-10-10 21:45:21,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445054688] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:45:21,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35792050] [2024-10-10 21:45:21,583 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 21:45:21,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:21,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:21,584 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:45:21,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-10 21:45:58,430 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2024-10-10 21:45:58,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:45:58,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-10-10 21:45:58,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:46:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7573 backedges. 1 proven. 5735 refuted. 0 times theorem prover too weak. 1837 trivial. 0 not checked. [2024-10-10 21:46:01,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:46:06,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7573 backedges. 1 proven. 5735 refuted. 0 times theorem prover too weak. 1837 trivial. 0 not checked. [2024-10-10 21:46:06,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35792050] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:46:06,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:46:06,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 65, 65] total 189 [2024-10-10 21:46:06,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651635174] [2024-10-10 21:46:06,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:46:06,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 189 states [2024-10-10 21:46:06,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:06,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2024-10-10 21:46:06,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10080, Invalid=25452, Unknown=0, NotChecked=0, Total=35532 [2024-10-10 21:46:06,496 INFO L87 Difference]: Start difference. First operand 453 states and 581 transitions. Second operand has 189 states, 189 states have (on average 2.417989417989418) internal successors, (457), 189 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:08,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:46:08,401 INFO L93 Difference]: Finished difference Result 1229 states and 1741 transitions. [2024-10-10 21:46:08,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2024-10-10 21:46:08,401 INFO L78 Accepts]: Start accepts. Automaton has has 189 states, 189 states have (on average 2.417989417989418) internal successors, (457), 189 states have internal predecessors, (457), 0 states have call successors, (0), 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 264 [2024-10-10 21:46:08,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:46:08,405 INFO L225 Difference]: With dead ends: 1229 [2024-10-10 21:46:08,405 INFO L226 Difference]: Without dead ends: 838 [2024-10-10 21:46:08,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7560 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=10080, Invalid=25452, Unknown=0, NotChecked=0, Total=35532 [2024-10-10 21:46:08,408 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 498 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 21:46:08,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 267 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 21:46:08,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-10-10 21:46:08,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 838. [2024-10-10 21:46:08,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 1.3070489844683393) internal successors, (1094), 837 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:08,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1094 transitions. [2024-10-10 21:46:08,439 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1094 transitions. Word has length 264 [2024-10-10 21:46:08,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:46:08,440 INFO L471 AbstractCegarLoop]: Abstraction has 838 states and 1094 transitions. [2024-10-10 21:46:08,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 189 states, 189 states have (on average 2.417989417989418) internal successors, (457), 189 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:46:08,440 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1094 transitions. [2024-10-10 21:46:08,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-10-10 21:46:08,448 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:46:08,448 INFO L215 NwaCegarLoop]: trace histogram [126, 126, 126, 61, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:46:08,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-10 21:46:08,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:08,650 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:46:08,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:46:08,651 INFO L85 PathProgramCache]: Analyzing trace with hash 271285091, now seen corresponding path program 6 times [2024-10-10 21:46:08,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:46:08,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477289532] [2024-10-10 21:46:08,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:46:08,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:46:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:11,845 INFO L134 CoverageAnalysis]: Checked inductivity of 25650 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 23759 trivial. 0 not checked. [2024-10-10 21:46:11,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:11,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477289532] [2024-10-10 21:46:11,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477289532] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:46:11,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289099145] [2024-10-10 21:46:11,846 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 21:46:11,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:11,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:11,847 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:46:11,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-10 21:46:12,518 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-10-10 21:46:12,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:46:12,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-10 21:46:12,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:46:14,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 21:46:14,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2024-10-10 21:46:14,167 INFO L134 CoverageAnalysis]: Checked inductivity of 25650 backedges. 1 proven. 1003 refuted. 0 times theorem prover too weak. 24646 trivial. 0 not checked. [2024-10-10 21:46:14,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:46:15,798 INFO L349 Elim1Store]: treesize reduction 13, result has 73.5 percent of original size [2024-10-10 21:46:15,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 47 [2024-10-10 21:46:15,961 INFO L134 CoverageAnalysis]: Checked inductivity of 25650 backedges. 124 proven. 880 refuted. 0 times theorem prover too weak. 24646 trivial. 0 not checked. [2024-10-10 21:46:15,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289099145] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:46:15,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:46:15,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 14, 14] total 88 [2024-10-10 21:46:15,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743084079] [2024-10-10 21:46:15,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:46:15,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-10-10 21:46:15,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:15,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-10-10 21:46:15,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2124, Invalid=5532, Unknown=0, NotChecked=0, Total=7656 [2024-10-10 21:46:15,965 INFO L87 Difference]: Start difference. First operand 838 states and 1094 transitions. Second operand has 88 states, 88 states have (on average 1.5340909090909092) internal successors, (135), 88 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)