./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/sanfoundry_27_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sanfoundry_27_ground.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 40b578d2ddf68a49bc52037a6e4860a392bad1b49fc77d85682d536447864a03 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 19:28:50,937 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 19:28:51,015 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 19:28:51,020 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 19:28:51,022 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 19:28:51,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 19:28:51,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 19:28:51,048 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 19:28:51,048 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 19:28:51,048 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 19:28:51,049 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 19:28:51,049 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 19:28:51,049 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 19:28:51,050 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 19:28:51,050 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 19:28:51,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 19:28:51,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 19:28:51,051 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 19:28:51,051 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 19:28:51,051 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 19:28:51,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 19:28:51,058 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 19:28:51,058 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 19:28:51,059 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 19:28:51,059 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 19:28:51,059 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 19:28:51,059 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 19:28:51,059 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 19:28:51,060 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 19:28:51,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 19:28:51,060 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 19:28:51,060 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 19:28:51,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 19:28:51,060 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 19:28:51,061 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 19:28:51,061 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 19:28:51,061 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 19:28:51,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 19:28:51,061 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 19:28:51,061 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 19:28:51,062 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 19:28:51,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 19:28:51,062 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40b578d2ddf68a49bc52037a6e4860a392bad1b49fc77d85682d536447864a03 [2024-10-23 19:28:51,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 19:28:51,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 19:28:51,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 19:28:51,270 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 19:28:51,274 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 19:28:51,275 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sanfoundry_27_ground.i [2024-10-23 19:28:52,710 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 19:28:52,849 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 19:28:52,849 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/sanfoundry_27_ground.i [2024-10-23 19:28:52,854 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c6d9fc6d/f6fabdc0cc8841ae8ca7d3d579c7a690/FLAGf22bee84f [2024-10-23 19:28:53,257 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c6d9fc6d/f6fabdc0cc8841ae8ca7d3d579c7a690 [2024-10-23 19:28:53,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 19:28:53,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 19:28:53,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 19:28:53,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 19:28:53,267 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 19:28:53,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:28:53" (1/1) ... [2024-10-23 19:28:53,268 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42508450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:28:53, skipping insertion in model container [2024-10-23 19:28:53,269 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:28:53" (1/1) ... [2024-10-23 19:28:53,281 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 19:28:53,412 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/sanfoundry_27_ground.i[813,826] [2024-10-23 19:28:53,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 19:28:53,434 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 19:28:53,442 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/sanfoundry_27_ground.i[813,826] [2024-10-23 19:28:53,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 19:28:53,462 INFO L204 MainTranslator]: Completed translation [2024-10-23 19:28:53,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:28:53 WrapperNode [2024-10-23 19:28:53,463 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 19:28:53,464 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 19:28:53,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 19:28:53,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 19:28:53,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:28:53" (1/1) ... [2024-10-23 19:28:53,474 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:28:53" (1/1) ... [2024-10-23 19:28:53,488 INFO L138 Inliner]: procedures = 16, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2024-10-23 19:28:53,489 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 19:28:53,490 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 19:28:53,490 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 19:28:53,490 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 19:28:53,497 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:28:53" (1/1) ... [2024-10-23 19:28:53,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:28:53" (1/1) ... [2024-10-23 19:28:53,498 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:28:53" (1/1) ... [2024-10-23 19:28:53,506 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-23 19:28:53,507 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:28:53" (1/1) ... [2024-10-23 19:28:53,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:28:53" (1/1) ... [2024-10-23 19:28:53,510 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:28:53" (1/1) ... [2024-10-23 19:28:53,512 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:28:53" (1/1) ... [2024-10-23 19:28:53,513 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:28:53" (1/1) ... [2024-10-23 19:28:53,514 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:28:53" (1/1) ... [2024-10-23 19:28:53,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 19:28:53,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 19:28:53,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 19:28:53,516 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 19:28:53,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:28:53" (1/1) ... [2024-10-23 19:28:53,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 19:28:53,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:28:53,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 19:28:53,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 19:28:53,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 19:28:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 19:28:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-23 19:28:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 19:28:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-23 19:28:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-23 19:28:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 19:28:53,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 19:28:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-23 19:28:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-23 19:28:53,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 19:28:53,649 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 19:28:53,650 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 19:28:53,781 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-10-23 19:28:53,781 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 19:28:53,807 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 19:28:53,807 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-23 19:28:53,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:28:53 BoogieIcfgContainer [2024-10-23 19:28:53,807 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 19:28:53,809 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 19:28:53,809 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 19:28:53,812 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 19:28:53,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:28:53" (1/3) ... [2024-10-23 19:28:53,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ecc519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:28:53, skipping insertion in model container [2024-10-23 19:28:53,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:28:53" (2/3) ... [2024-10-23 19:28:53,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ecc519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:28:53, skipping insertion in model container [2024-10-23 19:28:53,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:28:53" (3/3) ... [2024-10-23 19:28:53,814 INFO L112 eAbstractionObserver]: Analyzing ICFG sanfoundry_27_ground.i [2024-10-23 19:28:53,826 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 19:28:53,827 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 19:28:53,874 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 19:28:53,880 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;@2f29b02c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 19:28:53,880 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 19:28:53,883 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 13 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) [2024-10-23 19:28:53,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-23 19:28:53,888 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:28:53,888 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:28:53,889 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:28:53,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:28:53,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1357947524, now seen corresponding path program 1 times [2024-10-23 19:28:53,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:28:53,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210545202] [2024-10-23 19:28:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:28:53,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:28:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:28:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 19:28:54,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:28:54,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210545202] [2024-10-23 19:28:54,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210545202] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 19:28:54,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 19:28:54,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 19:28:54,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704104451] [2024-10-23 19:28:54,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 19:28:54,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 19:28:54,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:28:54,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 19:28:54,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 19:28:54,196 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 13 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) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:28:54,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:28:54,234 INFO L93 Difference]: Finished difference Result 27 states and 41 transitions. [2024-10-23 19:28:54,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 19:28:54,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2024-10-23 19:28:54,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:28:54,242 INFO L225 Difference]: With dead ends: 27 [2024-10-23 19:28:54,242 INFO L226 Difference]: Without dead ends: 13 [2024-10-23 19:28:54,244 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 [2024-10-23 19:28:54,248 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 19:28:54,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:28:54,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-23 19:28:54,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-23 19:28:54,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:28:54,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2024-10-23 19:28:54,269 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2024-10-23 19:28:54,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:28:54,269 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2024-10-23 19:28:54,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:28:54,270 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2024-10-23 19:28:54,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-23 19:28:54,270 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:28:54,270 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:28:54,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 19:28:54,271 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:28:54,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:28:54,271 INFO L85 PathProgramCache]: Analyzing trace with hash -115742476, now seen corresponding path program 1 times [2024-10-23 19:28:54,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:28:54,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034991481] [2024-10-23 19:28:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:28:54,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:28:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:28:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 19:28:54,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:28:54,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034991481] [2024-10-23 19:28:54,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034991481] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:28:54,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961171968] [2024-10-23 19:28:54,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:28:54,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:28:54,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:28:54,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:28:54,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 19:28:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:28:54,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 19:28:54,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:28:54,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 19:28:54,404 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 19:28:54,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961171968] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 19:28:54,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 19:28:54,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-10-23 19:28:54,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316445112] [2024-10-23 19:28:54,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 19:28:54,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 19:28:54,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:28:54,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 19:28:54,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 19:28:54,411 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2024-10-23 19:28:54,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:28:54,434 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2024-10-23 19:28:54,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 19:28:54,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2024-10-23 19:28:54,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:28:54,435 INFO L225 Difference]: With dead ends: 22 [2024-10-23 19:28:54,435 INFO L226 Difference]: Without dead ends: 16 [2024-10-23 19:28:54,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 19:28:54,436 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 15 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 [2024-10-23 19:28:54,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 15 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:28:54,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-10-23 19:28:54,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2024-10-23 19:28:54,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:28:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2024-10-23 19:28:54,443 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2024-10-23 19:28:54,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:28:54,443 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2024-10-23 19:28:54,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2024-10-23 19:28:54,443 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2024-10-23 19:28:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-23 19:28:54,444 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:28:54,444 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:28:54,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-23 19:28:54,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:28:54,646 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:28:54,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:28:54,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1089135888, now seen corresponding path program 1 times [2024-10-23 19:28:54,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:28:54,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602366595] [2024-10-23 19:28:54,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:28:54,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:28:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:28:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 19:28:54,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:28:54,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602366595] [2024-10-23 19:28:54,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602366595] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:28:54,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338521626] [2024-10-23 19:28:54,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:28:54,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:28:54,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:28:54,702 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:28:54,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 19:28:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:28:54,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 19:28:54,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:28:54,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 19:28:54,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:28:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 19:28:54,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338521626] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:28:54,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:28:54,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-23 19:28:54,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392162021] [2024-10-23 19:28:54,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:28:54,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-23 19:28:54,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:28:54,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-23 19:28:54,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-23 19:28:54,780 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:28:54,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:28:54,810 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2024-10-23 19:28:54,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-23 19:28:54,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-23 19:28:54,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:28:54,811 INFO L225 Difference]: With dead ends: 34 [2024-10-23 19:28:54,811 INFO L226 Difference]: Without dead ends: 23 [2024-10-23 19:28:54,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-23 19:28:54,812 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 19:28:54,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 22 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:28:54,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-23 19:28:54,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-10-23 19:28:54,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:28:54,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2024-10-23 19:28:54,815 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 12 [2024-10-23 19:28:54,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:28:54,816 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2024-10-23 19:28:54,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:28:54,816 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2024-10-23 19:28:54,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-23 19:28:54,816 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:28:54,817 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:28:54,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 19:28:55,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-23 19:28:55,021 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:28:55,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:28:55,022 INFO L85 PathProgramCache]: Analyzing trace with hash -792155541, now seen corresponding path program 2 times [2024-10-23 19:28:55,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:28:55,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910971157] [2024-10-23 19:28:55,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:28:55,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:28:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:28:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-23 19:28:55,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:28:55,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910971157] [2024-10-23 19:28:55,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910971157] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:28:55,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413296337] [2024-10-23 19:28:55,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 19:28:55,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:28:55,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:28:55,150 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:28:55,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 19:28:55,209 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 19:28:55,210 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 19:28:55,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 19:28:55,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:28:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-23 19:28:55,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:28:55,279 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-23 19:28:55,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413296337] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:28:55,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:28:55,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-23 19:28:55,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819251144] [2024-10-23 19:28:55,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:28:55,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-23 19:28:55,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:28:55,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-23 19:28:55,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-23 19:28:55,282 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:28:55,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:28:55,356 INFO L93 Difference]: Finished difference Result 64 states and 91 transitions. [2024-10-23 19:28:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-23 19:28:55,356 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-23 19:28:55,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:28:55,357 INFO L225 Difference]: With dead ends: 64 [2024-10-23 19:28:55,357 INFO L226 Difference]: Without dead ends: 47 [2024-10-23 19:28:55,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-23 19:28:55,358 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 72 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 19:28:55,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 33 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 19:28:55,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-23 19:28:55,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-10-23 19:28:55,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 46 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:28:55,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2024-10-23 19:28:55,369 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 21 [2024-10-23 19:28:55,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:28:55,369 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2024-10-23 19:28:55,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:28:55,369 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2024-10-23 19:28:55,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-23 19:28:55,370 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:28:55,370 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:28:55,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 19:28:55,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:28:55,571 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:28:55,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:28:55,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1047474165, now seen corresponding path program 3 times [2024-10-23 19:28:55,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:28:55,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85266723] [2024-10-23 19:28:55,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:28:55,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:28:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:28:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-10-23 19:28:55,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:28:55,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85266723] [2024-10-23 19:28:55,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85266723] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:28:55,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821035559] [2024-10-23 19:28:55,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 19:28:55,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:28:55,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:28:55,860 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:28:55,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 19:28:55,965 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-23 19:28:55,966 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 19:28:55,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 19:28:55,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:28:56,001 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-10-23 19:28:56,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:28:56,184 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-10-23 19:28:56,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821035559] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:28:56,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:28:56,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-10-23 19:28:56,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775954645] [2024-10-23 19:28:56,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:28:56,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-23 19:28:56,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:28:56,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-23 19:28:56,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-23 19:28:56,187 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand has 25 states, 25 states have (on average 1.4) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:28:56,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:28:56,342 INFO L93 Difference]: Finished difference Result 130 states and 187 transitions. [2024-10-23 19:28:56,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-23 19:28:56,342 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-10-23 19:28:56,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:28:56,343 INFO L225 Difference]: With dead ends: 130 [2024-10-23 19:28:56,345 INFO L226 Difference]: Without dead ends: 95 [2024-10-23 19:28:56,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-23 19:28:56,346 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 198 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 19:28:56,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 41 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 19:28:56,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-10-23 19:28:56,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-10-23 19:28:56,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.2553191489361701) internal successors, (118), 94 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) [2024-10-23 19:28:56,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 118 transitions. [2024-10-23 19:28:56,361 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 118 transitions. Word has length 45 [2024-10-23 19:28:56,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:28:56,361 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 118 transitions. [2024-10-23 19:28:56,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:28:56,362 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 118 transitions. [2024-10-23 19:28:56,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-23 19:28:56,363 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:28:56,363 INFO L215 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:28:56,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-23 19:28:56,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:28:56,566 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:28:56,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:28:56,567 INFO L85 PathProgramCache]: Analyzing trace with hash 707380043, now seen corresponding path program 4 times [2024-10-23 19:28:56,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:28:56,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979762612] [2024-10-23 19:28:56,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:28:56,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:28:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:28:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-23 19:28:57,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:28:57,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979762612] [2024-10-23 19:28:57,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979762612] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:28:57,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141384802] [2024-10-23 19:28:57,190 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-23 19:28:57,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:28:57,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:28:57,193 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:28:57,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 19:28:57,299 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-23 19:28:57,300 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 19:28:57,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-23 19:28:57,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:28:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-10-23 19:28:57,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:28:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-10-23 19:28:58,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141384802] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:28:58,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:28:58,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2024-10-23 19:28:58,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807609647] [2024-10-23 19:28:58,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:28:58,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-23 19:28:58,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:28:58,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-23 19:28:58,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2024-10-23 19:28:58,023 INFO L87 Difference]: Start difference. First operand 95 states and 118 transitions. Second operand has 47 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 47 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:28:58,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:28:58,266 INFO L93 Difference]: Finished difference Result 258 states and 372 transitions. [2024-10-23 19:28:58,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-23 19:28:58,266 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 47 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-10-23 19:28:58,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:28:58,268 INFO L225 Difference]: With dead ends: 258 [2024-10-23 19:28:58,268 INFO L226 Difference]: Without dead ends: 187 [2024-10-23 19:28:58,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2024-10-23 19:28:58,269 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 143 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 19:28:58,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 78 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 19:28:58,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-10-23 19:28:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2024-10-23 19:28:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.2526881720430108) internal successors, (233), 186 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:28:58,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 233 transitions. [2024-10-23 19:28:58,284 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 233 transitions. Word has length 93 [2024-10-23 19:28:58,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:28:58,284 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 233 transitions. [2024-10-23 19:28:58,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 47 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:28:58,284 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 233 transitions. [2024-10-23 19:28:58,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-10-23 19:28:58,287 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:28:58,287 INFO L215 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:28:58,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-23 19:28:58,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:28:58,488 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:28:58,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:28:58,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1686049356, now seen corresponding path program 5 times [2024-10-23 19:28:58,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:28:58,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850646529] [2024-10-23 19:28:58,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:28:58,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:28:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:29:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3917 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 2882 trivial. 0 not checked. [2024-10-23 19:29:00,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:29:00,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850646529] [2024-10-23 19:29:00,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850646529] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:29:00,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815730707] [2024-10-23 19:29:00,162 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-23 19:29:00,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:29:00,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:29:00,163 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:29:00,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 19:29:17,789 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 45 check-sat command(s) [2024-10-23 19:29:17,789 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 19:29:17,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-23 19:29:17,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:29:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3917 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2024-10-23 19:29:17,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:29:20,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3917 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2024-10-23 19:29:20,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815730707] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:29:20,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:29:20,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2024-10-23 19:29:20,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841086850] [2024-10-23 19:29:20,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:29:20,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2024-10-23 19:29:20,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:29:20,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2024-10-23 19:29:20,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2024-10-23 19:29:20,238 INFO L87 Difference]: Start difference. First operand 187 states and 233 transitions. Second operand has 93 states, 93 states have (on average 3.5161290322580645) internal successors, (327), 93 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:29:21,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:29:21,101 INFO L93 Difference]: Finished difference Result 511 states and 740 transitions. [2024-10-23 19:29:21,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-10-23 19:29:21,102 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 3.5161290322580645) internal successors, (327), 93 states have internal predecessors, (327), 0 states have call successors, (0), 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 185 [2024-10-23 19:29:21,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:29:21,107 INFO L225 Difference]: With dead ends: 511 [2024-10-23 19:29:21,109 INFO L226 Difference]: Without dead ends: 371 [2024-10-23 19:29:21,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2024-10-23 19:29:21,115 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 352 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 19:29:21,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 124 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 19:29:21,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-10-23 19:29:21,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2024-10-23 19:29:21,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.2513513513513514) internal successors, (463), 370 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:29:21,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 463 transitions. [2024-10-23 19:29:21,153 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 463 transitions. Word has length 185 [2024-10-23 19:29:21,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:29:21,154 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 463 transitions. [2024-10-23 19:29:21,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 3.5161290322580645) internal successors, (327), 93 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 19:29:21,154 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 463 transitions. [2024-10-23 19:29:21,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-10-23 19:29:21,161 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:29:21,162 INFO L215 NwaCegarLoop]: trace histogram [91, 90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:29:21,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-23 19:29:21,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:29:21,366 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:29:21,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:29:21,367 INFO L85 PathProgramCache]: Analyzing trace with hash -885096044, now seen corresponding path program 6 times [2024-10-23 19:29:21,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:29:21,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141737374] [2024-10-23 19:29:21,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:29:21,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:29:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:29:26,353 INFO L134 CoverageAnalysis]: Checked inductivity of 16291 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 12105 trivial. 0 not checked. [2024-10-23 19:29:26,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:29:26,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141737374] [2024-10-23 19:29:26,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141737374] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:29:26,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915937398] [2024-10-23 19:29:26,354 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-23 19:29:26,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:29:26,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:29:26,356 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 19:29:26,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process