./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-10.i --full-output --preprocessor.use.memory.slicer false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 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 ../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-10.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 7a3066d73095e1fdcb5cedffd45d35ce8e4fafd1dd368f5e708224be9a677a7a --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 23:13:56,605 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 23:13:56,667 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 23:13:56,670 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 23:13:56,670 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 23:13:56,692 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 23:13:56,693 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 23:13:56,693 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 23:13:56,694 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 23:13:56,697 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 23:13:56,697 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 23:13:56,697 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 23:13:56,698 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 23:13:56,699 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 23:13:56,699 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 23:13:56,699 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 23:13:56,700 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 23:13:56,700 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 23:13:56,700 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 23:13:56,700 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 23:13:56,700 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 23:13:56,701 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 23:13:56,701 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 23:13:56,701 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 23:13:56,701 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 23:13:56,702 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 23:13:56,702 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 23:13:56,702 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 23:13:56,703 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 23:13:56,703 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 23:13:56,704 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 23:13:56,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:13:56,704 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 23:13:56,704 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 23:13:56,705 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 23:13:56,705 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 23:13:56,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 23:13:56,705 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 23:13:56,705 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 23:13:56,706 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 23:13:56,706 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 23:13:56,706 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 23:13:56,706 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a3066d73095e1fdcb5cedffd45d35ce8e4fafd1dd368f5e708224be9a677a7a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 23:13:56,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 23:13:56,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 23:13:56,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 23:13:56,943 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 23:13:56,944 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 23:13:56,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-10.i [2023-11-22 23:13:58,037 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 23:13:58,182 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 23:13:58,183 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-10.i [2023-11-22 23:13:58,189 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ac4e84d9/5fcd674a945245c7ac838a52e8e5b265/FLAG970df6a6a [2023-11-22 23:13:58,589 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ac4e84d9/5fcd674a945245c7ac838a52e8e5b265 [2023-11-22 23:13:58,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 23:13:58,592 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 23:13:58,593 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 23:13:58,593 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 23:13:58,596 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 23:13:58,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:13:58" (1/1) ... [2023-11-22 23:13:58,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@797041b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:13:58, skipping insertion in model container [2023-11-22 23:13:58,598 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:13:58" (1/1) ... [2023-11-22 23:13:58,617 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 23:13:58,715 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-10.i[919,932] [2023-11-22 23:13:58,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:13:58,764 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 23:13:58,775 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-10.i[919,932] [2023-11-22 23:13:58,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:13:58,808 INFO L206 MainTranslator]: Completed translation [2023-11-22 23:13:58,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:13:58 WrapperNode [2023-11-22 23:13:58,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 23:13:58,810 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 23:13:58,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 23:13:58,810 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 23:13:58,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:13:58" (1/1) ... [2023-11-22 23:13:58,824 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:13:58" (1/1) ... [2023-11-22 23:13:58,860 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 151 [2023-11-22 23:13:58,861 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 23:13:58,861 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 23:13:58,861 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 23:13:58,861 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 23:13:58,889 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:13:58" (1/1) ... [2023-11-22 23:13:58,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:13:58" (1/1) ... [2023-11-22 23:13:58,892 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:13:58" (1/1) ... [2023-11-22 23:13:58,895 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:13:58" (1/1) ... [2023-11-22 23:13:58,902 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:13:58" (1/1) ... [2023-11-22 23:13:58,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:13:58" (1/1) ... [2023-11-22 23:13:58,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:13:58" (1/1) ... [2023-11-22 23:13:58,918 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:13:58" (1/1) ... [2023-11-22 23:13:58,924 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 23:13:58,925 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 23:13:58,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 23:13:58,925 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 23:13:58,926 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:13:58" (1/1) ... [2023-11-22 23:13:58,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:13:58,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:13:58,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 23:13:58,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 23:13:59,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 23:13:59,025 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-22 23:13:59,025 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-22 23:13:59,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 23:13:59,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 23:13:59,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 23:13:59,150 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 23:13:59,152 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 23:13:59,407 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 23:13:59,432 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 23:13:59,432 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-22 23:13:59,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:13:59 BoogieIcfgContainer [2023-11-22 23:13:59,433 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 23:13:59,434 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 23:13:59,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 23:13:59,437 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 23:13:59,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:13:58" (1/3) ... [2023-11-22 23:13:59,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112f5d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:13:59, skipping insertion in model container [2023-11-22 23:13:59,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:13:58" (2/3) ... [2023-11-22 23:13:59,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112f5d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:13:59, skipping insertion in model container [2023-11-22 23:13:59,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:13:59" (3/3) ... [2023-11-22 23:13:59,440 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-10.i [2023-11-22 23:13:59,455 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 23:13:59,455 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 23:13:59,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 23:13:59,498 INFO L357 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, mHoare=true, 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;@2fd44f9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 23:13:59,499 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 23:13:59,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 40 states have (on average 1.525) internal successors, (61), 41 states have internal predecessors, (61), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-22 23:13:59,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-22 23:13:59,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:13:59,511 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:13:59,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:13:59,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:13:59,516 INFO L85 PathProgramCache]: Analyzing trace with hash 794996002, now seen corresponding path program 1 times [2023-11-22 23:13:59,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:13:59,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156294789] [2023-11-22 23:13:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:13:59,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:13:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 23:13:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 23:13:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 23:13:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-22 23:13:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 23:13:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:13:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-22 23:13:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-22 23:13:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 23:13:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 23:13:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 23:13:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-22 23:13:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:13:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 23:13:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 23:13:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 23:13:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 23:13:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 23:13:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:13:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-22 23:13:59,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:13:59,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156294789] [2023-11-22 23:13:59,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156294789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:13:59,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:13:59,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 23:13:59,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165294328] [2023-11-22 23:13:59,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:13:59,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 23:13:59,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:13:59,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 23:13:59,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 23:13:59,917 INFO L87 Difference]: Start difference. First operand has 61 states, 40 states have (on average 1.525) internal successors, (61), 41 states have internal predecessors, (61), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-22 23:13:59,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:13:59,962 INFO L93 Difference]: Finished difference Result 119 states and 210 transitions. [2023-11-22 23:13:59,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 23:13:59,965 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 115 [2023-11-22 23:13:59,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:13:59,972 INFO L225 Difference]: With dead ends: 119 [2023-11-22 23:13:59,972 INFO L226 Difference]: Without dead ends: 59 [2023-11-22 23:13:59,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 23:13:59,982 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 23:13:59,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 23:13:59,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-22 23:14:00,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-22 23:14:00,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.435897435897436) internal successors, (56), 39 states have internal predecessors, (56), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-22 23:14:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 92 transitions. [2023-11-22 23:14:00,019 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 92 transitions. Word has length 115 [2023-11-22 23:14:00,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:14:00,019 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 92 transitions. [2023-11-22 23:14:00,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-22 23:14:00,020 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 92 transitions. [2023-11-22 23:14:00,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-22 23:14:00,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:14:00,022 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:14:00,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 23:14:00,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:14:00,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:14:00,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1019182110, now seen corresponding path program 1 times [2023-11-22 23:14:00,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:14:00,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183279425] [2023-11-22 23:14:00,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:14:00,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:14:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 23:14:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 23:14:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 23:14:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-22 23:14:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 23:14:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:14:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-22 23:14:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-22 23:14:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 23:14:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 23:14:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 23:14:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-22 23:14:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:14:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 23:14:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 23:14:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 23:14:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 23:14:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 23:14:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-22 23:14:00,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:14:00,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183279425] [2023-11-22 23:14:00,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183279425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:14:00,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:14:00,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:14:00,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564133357] [2023-11-22 23:14:00,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:14:00,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:14:00,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:14:00,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:14:00,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:14:00,379 INFO L87 Difference]: Start difference. First operand 59 states and 92 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-22 23:14:00,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:14:00,515 INFO L93 Difference]: Finished difference Result 176 states and 275 transitions. [2023-11-22 23:14:00,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:14:00,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 115 [2023-11-22 23:14:00,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:14:00,519 INFO L225 Difference]: With dead ends: 176 [2023-11-22 23:14:00,520 INFO L226 Difference]: Without dead ends: 118 [2023-11-22 23:14:00,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:14:00,523 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 60 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:14:00,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 256 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:14:00,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-22 23:14:00,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 92. [2023-11-22 23:14:00,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 53 states have (on average 1.320754716981132) internal successors, (70), 53 states have internal predecessors, (70), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-22 23:14:00,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 142 transitions. [2023-11-22 23:14:00,560 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 142 transitions. Word has length 115 [2023-11-22 23:14:00,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:14:00,561 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 142 transitions. [2023-11-22 23:14:00,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-22 23:14:00,562 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 142 transitions. [2023-11-22 23:14:00,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-22 23:14:00,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:14:00,563 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:14:00,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 23:14:00,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:14:00,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:14:00,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1251763523, now seen corresponding path program 1 times [2023-11-22 23:14:00,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:14:00,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649505160] [2023-11-22 23:14:00,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:14:00,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:14:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 23:14:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 23:14:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 23:14:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-22 23:14:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 23:14:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:14:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-22 23:14:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-22 23:14:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 23:14:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 23:14:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 23:14:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-22 23:14:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:14:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 23:14:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 23:14:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 23:14:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 23:14:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 23:14:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:14:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-22 23:14:21,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:14:21,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649505160] [2023-11-22 23:14:21,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649505160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:14:21,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:14:21,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-22 23:14:21,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163652301] [2023-11-22 23:14:21,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:14:21,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 23:14:21,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:14:21,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 23:14:21,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-22 23:14:21,067 INFO L87 Difference]: Start difference. First operand 92 states and 142 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-22 23:14:21,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:14:21,848 INFO L93 Difference]: Finished difference Result 228 states and 349 transitions. [2023-11-22 23:14:21,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 23:14:21,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 116 [2023-11-22 23:14:21,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:14:21,850 INFO L225 Difference]: With dead ends: 228 [2023-11-22 23:14:21,850 INFO L226 Difference]: Without dead ends: 170 [2023-11-22 23:14:21,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-11-22 23:14:21,851 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 176 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:14:21,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 425 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 23:14:21,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-22 23:14:21,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 107. [2023-11-22 23:14:21,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 68 states have internal predecessors, (95), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-22 23:14:21,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 167 transitions. [2023-11-22 23:14:21,864 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 167 transitions. Word has length 116 [2023-11-22 23:14:21,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:14:21,865 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 167 transitions. [2023-11-22 23:14:21,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-22 23:14:21,865 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 167 transitions. [2023-11-22 23:14:21,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-22 23:14:21,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:14:21,867 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:14:21,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 23:14:21,868 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:14:21,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:14:21,868 INFO L85 PathProgramCache]: Analyzing trace with hash 523243839, now seen corresponding path program 1 times [2023-11-22 23:14:21,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:14:21,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817684043] [2023-11-22 23:14:21,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:14:21,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:14:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 23:15:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 23:15:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 23:15:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-22 23:15:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 23:15:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:15:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-22 23:15:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-22 23:15:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 23:15:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 23:15:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 23:15:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-22 23:15:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:15:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 23:15:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 23:15:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 23:15:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 23:15:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 23:15:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:15:56,252 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-22 23:15:56,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:15:56,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817684043] [2023-11-22 23:15:56,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817684043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:15:56,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:15:56,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-22 23:15:56,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423160844] [2023-11-22 23:15:56,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:15:56,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 23:15:56,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:15:56,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 23:15:56,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-22 23:15:56,256 INFO L87 Difference]: Start difference. First operand 107 states and 167 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-22 23:15:57,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:15:57,082 INFO L93 Difference]: Finished difference Result 269 states and 411 transitions. [2023-11-22 23:15:57,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 23:15:57,082 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 116 [2023-11-22 23:15:57,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:15:57,084 INFO L225 Difference]: With dead ends: 269 [2023-11-22 23:15:57,084 INFO L226 Difference]: Without dead ends: 196 [2023-11-22 23:15:57,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2023-11-22 23:15:57,085 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 227 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 23:15:57,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 402 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 23:15:57,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-22 23:15:57,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 115. [2023-11-22 23:15:57,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 76 states have (on average 1.4342105263157894) internal successors, (109), 76 states have internal predecessors, (109), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-22 23:15:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 181 transitions. [2023-11-22 23:15:57,109 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 181 transitions. Word has length 116 [2023-11-22 23:15:57,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:15:57,110 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 181 transitions. [2023-11-22 23:15:57,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-22 23:15:57,110 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 181 transitions. [2023-11-22 23:15:57,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-22 23:15:57,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:15:57,112 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:15:57,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 23:15:57,112 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:15:57,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:15:57,113 INFO L85 PathProgramCache]: Analyzing trace with hash -819439171, now seen corresponding path program 1 times [2023-11-22 23:15:57,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:15:57,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360569940] [2023-11-22 23:15:57,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:15:57,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:15:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 23:17:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 23:17:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 23:17:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-22 23:17:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 23:17:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-22 23:17:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-22 23:17:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-22 23:17:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 23:17:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 23:17:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 23:17:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-22 23:17:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 23:17:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 23:17:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 23:17:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 23:17:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 23:17:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 23:17:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:17:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-22 23:17:38,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:17:38,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360569940] [2023-11-22 23:17:38,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360569940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:17:38,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:17:38,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-22 23:17:38,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760717006] [2023-11-22 23:17:38,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:17:38,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-22 23:17:38,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:17:38,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-22 23:17:38,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-22 23:17:38,764 INFO L87 Difference]: Start difference. First operand 115 states and 181 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-22 23:17:41,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:17:41,989 INFO L93 Difference]: Finished difference Result 301 states and 457 transitions. [2023-11-22 23:17:41,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-22 23:17:41,990 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 116 [2023-11-22 23:17:41,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:17:41,991 INFO L225 Difference]: With dead ends: 301 [2023-11-22 23:17:41,991 INFO L226 Difference]: Without dead ends: 220 [2023-11-22 23:17:41,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2023-11-22 23:17:41,993 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 491 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:17:41,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 331 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-22 23:17:41,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-22 23:17:42,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 118. [2023-11-22 23:17:42,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 79 states have (on average 1.4430379746835442) internal successors, (114), 79 states have internal predecessors, (114), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-22 23:17:42,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 186 transitions. [2023-11-22 23:17:42,009 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 186 transitions. Word has length 116 [2023-11-22 23:17:42,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:17:42,010 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 186 transitions. [2023-11-22 23:17:42,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-22 23:17:42,011 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 186 transitions. [2023-11-22 23:17:42,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-22 23:17:42,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:17:42,015 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:17:42,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-22 23:17:42,016 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:17:42,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:17:42,018 INFO L85 PathProgramCache]: Analyzing trace with hash -139380801, now seen corresponding path program 1 times [2023-11-22 23:17:42,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:17:42,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662440377] [2023-11-22 23:17:42,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:17:42,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:17:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15