./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/interleave_bits.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/interleave_bits.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 41cbcdfa6f09b615c08bb2dbf908be5e0a68dc8c6a10c0ba76a3c4e4c07e69fb --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 15:10:02,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 15:10:02,072 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 15:10:02,078 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 15:10:02,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 15:10:02,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 15:10:02,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 15:10:02,102 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 15:10:02,103 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 15:10:02,104 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 15:10:02,104 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 15:10:02,104 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 15:10:02,105 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 15:10:02,105 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 15:10:02,107 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 15:10:02,107 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 15:10:02,107 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 15:10:02,107 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 15:10:02,107 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 15:10:02,108 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 15:10:02,108 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 15:10:02,108 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 15:10:02,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 15:10:02,112 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 15:10:02,112 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 15:10:02,112 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 15:10:02,112 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 15:10:02,113 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 15:10:02,113 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 15:10:02,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 15:10:02,113 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 15:10:02,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 15:10:02,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:10:02,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 15:10:02,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 15:10:02,114 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 15:10:02,114 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 15:10:02,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 15:10:02,114 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 15:10:02,114 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 15:10:02,114 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 15:10:02,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 15:10:02,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41cbcdfa6f09b615c08bb2dbf908be5e0a68dc8c6a10c0ba76a3c4e4c07e69fb [2024-10-12 15:10:02,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 15:10:02,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 15:10:02,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 15:10:02,353 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 15:10:02,353 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 15:10:02,354 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/interleave_bits.i [2024-10-12 15:10:03,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 15:10:03,763 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 15:10:03,763 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/interleave_bits.i [2024-10-12 15:10:03,769 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ccf777fd/2fb784aa162b42c9a530e9dc2cfc708e/FLAG4918939d1 [2024-10-12 15:10:03,781 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ccf777fd/2fb784aa162b42c9a530e9dc2cfc708e [2024-10-12 15:10:03,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 15:10:03,784 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 15:10:03,785 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 15:10:03,785 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 15:10:03,789 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 15:10:03,789 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:10:03" (1/1) ... [2024-10-12 15:10:03,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a30c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:10:03, skipping insertion in model container [2024-10-12 15:10:03,790 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:10:03" (1/1) ... [2024-10-12 15:10:03,807 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 15:10:03,929 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/bitvector/interleave_bits.i[1175,1188] [2024-10-12 15:10:03,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:10:03,963 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 15:10:03,974 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/bitvector/interleave_bits.i[1175,1188] [2024-10-12 15:10:03,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:10:04,001 INFO L204 MainTranslator]: Completed translation [2024-10-12 15:10:04,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:10:04 WrapperNode [2024-10-12 15:10:04,001 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 15:10:04,002 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 15:10:04,002 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 15:10:04,002 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 15:10:04,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:10:04" (1/1) ... [2024-10-12 15:10:04,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:10:04" (1/1) ... [2024-10-12 15:10:04,040 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 235 [2024-10-12 15:10:04,043 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 15:10:04,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 15:10:04,044 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 15:10:04,044 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 15:10:04,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:10:04" (1/1) ... [2024-10-12 15:10:04,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:10:04" (1/1) ... [2024-10-12 15:10:04,054 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:10:04" (1/1) ... [2024-10-12 15:10:04,065 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 15:10:04,065 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:10:04" (1/1) ... [2024-10-12 15:10:04,065 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:10:04" (1/1) ... [2024-10-12 15:10:04,069 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:10:04" (1/1) ... [2024-10-12 15:10:04,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:10:04" (1/1) ... [2024-10-12 15:10:04,074 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:10:04" (1/1) ... [2024-10-12 15:10:04,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:10:04" (1/1) ... [2024-10-12 15:10:04,081 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 15:10:04,082 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 15:10:04,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 15:10:04,082 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 15:10:04,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:10:04" (1/1) ... [2024-10-12 15:10:04,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:10:04,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:10:04,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 15:10:04,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 15:10:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 15:10:04,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 15:10:04,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 15:10:04,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 15:10:04,210 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 15:10:04,211 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 15:10:05,498 INFO L? ?]: Removed 86 outVars from TransFormulas that were not future-live. [2024-10-12 15:10:05,498 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 15:10:05,513 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 15:10:05,514 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 15:10:05,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:10:05 BoogieIcfgContainer [2024-10-12 15:10:05,514 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 15:10:05,517 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 15:10:05,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 15:10:05,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 15:10:05,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:10:03" (1/3) ... [2024-10-12 15:10:05,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378e5cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:10:05, skipping insertion in model container [2024-10-12 15:10:05,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:10:04" (2/3) ... [2024-10-12 15:10:05,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378e5cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:10:05, skipping insertion in model container [2024-10-12 15:10:05,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:10:05" (3/3) ... [2024-10-12 15:10:05,522 INFO L112 eAbstractionObserver]: Analyzing ICFG interleave_bits.i [2024-10-12 15:10:05,535 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 15:10:05,536 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 15:10:05,578 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 15:10:05,583 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;@324444dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 15:10:05,584 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 15:10:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 87 states have (on average 1.5747126436781609) internal successors, (137), 88 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:05,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-12 15:10:05,593 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:05,594 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:05,594 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:05,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:05,598 INFO L85 PathProgramCache]: Analyzing trace with hash 514750692, now seen corresponding path program 1 times [2024-10-12 15:10:05,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:05,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688331192] [2024-10-12 15:10:05,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:05,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:05,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:05,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:05,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688331192] [2024-10-12 15:10:05,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688331192] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:10:05,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:10:05,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:10:05,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88987279] [2024-10-12 15:10:05,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:10:05,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:10:05,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:05,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:10:05,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:10:05,916 INFO L87 Difference]: Start difference. First operand has 89 states, 87 states have (on average 1.5747126436781609) internal successors, (137), 88 states have internal predecessors, (137), 0 states have call successors, (0), 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 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:06,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:06,034 INFO L93 Difference]: Finished difference Result 196 states and 306 transitions. [2024-10-12 15:10:06,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:10:06,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-10-12 15:10:06,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:06,041 INFO L225 Difference]: With dead ends: 196 [2024-10-12 15:10:06,042 INFO L226 Difference]: Without dead ends: 106 [2024-10-12 15:10:06,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:10:06,046 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 27 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:06,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 248 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 15:10:06,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-10-12 15:10:06,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2024-10-12 15:10:06,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.5268817204301075) internal successors, (142), 93 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:06,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 142 transitions. [2024-10-12 15:10:06,077 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 142 transitions. Word has length 31 [2024-10-12 15:10:06,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:06,078 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 142 transitions. [2024-10-12 15:10:06,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:06,078 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 142 transitions. [2024-10-12 15:10:06,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-12 15:10:06,079 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:06,080 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:06,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 15:10:06,080 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:06,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:06,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1247634837, now seen corresponding path program 1 times [2024-10-12 15:10:06,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:06,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473530775] [2024-10-12 15:10:06,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:06,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:06,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:06,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473530775] [2024-10-12 15:10:06,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473530775] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:06,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537339367] [2024-10-12 15:10:06,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:06,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:06,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:10:06,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:10:06,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 15:10:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:06,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 15:10:06,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:10:06,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:06,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:10:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:06,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537339367] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 15:10:06,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 15:10:06,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-12 15:10:06,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568101019] [2024-10-12 15:10:06,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 15:10:06,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 15:10:06,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:06,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 15:10:06,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-10-12 15:10:06,445 INFO L87 Difference]: Start difference. First operand 94 states and 142 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:06,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:06,540 INFO L93 Difference]: Finished difference Result 237 states and 365 transitions. [2024-10-12 15:10:06,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 15:10:06,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 41 [2024-10-12 15:10:06,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:06,542 INFO L225 Difference]: With dead ends: 237 [2024-10-12 15:10:06,542 INFO L226 Difference]: Without dead ends: 151 [2024-10-12 15:10:06,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-12 15:10:06,543 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 188 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:06,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 527 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 15:10:06,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-10-12 15:10:06,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2024-10-12 15:10:06,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.52) internal successors, (228), 150 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:06,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 228 transitions. [2024-10-12 15:10:06,557 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 228 transitions. Word has length 41 [2024-10-12 15:10:06,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:06,558 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 228 transitions. [2024-10-12 15:10:06,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 228 transitions. [2024-10-12 15:10:06,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-12 15:10:06,559 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:06,560 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:06,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 15:10:06,760 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 [2024-10-12 15:10:06,761 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:06,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:06,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1906156544, now seen corresponding path program 1 times [2024-10-12 15:10:06,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:06,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754136132] [2024-10-12 15:10:06,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:06,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 43 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 15:10:07,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:07,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754136132] [2024-10-12 15:10:07,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754136132] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:07,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987803115] [2024-10-12 15:10:07,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:07,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:07,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:10:07,010 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:10:07,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 15:10:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:07,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 15:10:07,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:10:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 43 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 15:10:07,148 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:10:07,233 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 43 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 15:10:07,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987803115] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 15:10:07,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 15:10:07,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-12 15:10:07,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633794427] [2024-10-12 15:10:07,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 15:10:07,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 15:10:07,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:07,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 15:10:07,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-12 15:10:07,237 INFO L87 Difference]: Start difference. First operand 151 states and 228 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:07,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:07,339 INFO L93 Difference]: Finished difference Result 257 states and 391 transitions. [2024-10-12 15:10:07,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 15:10:07,340 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 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 75 [2024-10-12 15:10:07,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:07,341 INFO L225 Difference]: With dead ends: 257 [2024-10-12 15:10:07,341 INFO L226 Difference]: Without dead ends: 151 [2024-10-12 15:10:07,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-12 15:10:07,342 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 352 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:07,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 598 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 15:10:07,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-10-12 15:10:07,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2024-10-12 15:10:07,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.4933333333333334) internal successors, (224), 150 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:07,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 224 transitions. [2024-10-12 15:10:07,354 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 224 transitions. Word has length 75 [2024-10-12 15:10:07,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:07,355 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 224 transitions. [2024-10-12 15:10:07,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:07,355 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 224 transitions. [2024-10-12 15:10:07,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-12 15:10:07,372 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:07,372 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:07,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 15:10:07,573 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 [2024-10-12 15:10:07,573 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:07,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:07,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1139221696, now seen corresponding path program 2 times [2024-10-12 15:10:07,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:07,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555821761] [2024-10-12 15:10:07,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:07,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:07,786 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:07,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:07,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555821761] [2024-10-12 15:10:07,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555821761] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:07,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555783939] [2024-10-12 15:10:07,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 15:10:07,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:07,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:10:07,790 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:10:07,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 15:10:07,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 15:10:07,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 15:10:07,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 15:10:07,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:10:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:07,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:10:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:08,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555783939] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 15:10:08,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 15:10:08,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-12 15:10:08,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409064135] [2024-10-12 15:10:08,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 15:10:08,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-12 15:10:08,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:08,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-12 15:10:08,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-10-12 15:10:08,086 INFO L87 Difference]: Start difference. First operand 151 states and 224 transitions. Second operand has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 12 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:08,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:08,379 INFO L93 Difference]: Finished difference Result 347 states and 519 transitions. [2024-10-12 15:10:08,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 15:10:08,380 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 12 states have internal predecessors, (127), 0 states have call successors, (0), 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 77 [2024-10-12 15:10:08,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:08,381 INFO L225 Difference]: With dead ends: 347 [2024-10-12 15:10:08,382 INFO L226 Difference]: Without dead ends: 283 [2024-10-12 15:10:08,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2024-10-12 15:10:08,384 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 757 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:08,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1288 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 15:10:08,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-10-12 15:10:08,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2024-10-12 15:10:08,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.475177304964539) internal successors, (416), 282 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:08,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 416 transitions. [2024-10-12 15:10:08,397 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 416 transitions. Word has length 77 [2024-10-12 15:10:08,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:08,397 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 416 transitions. [2024-10-12 15:10:08,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 12 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:08,398 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 416 transitions. [2024-10-12 15:10:08,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-12 15:10:08,399 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:08,399 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:08,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 15:10:08,600 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 [2024-10-12 15:10:08,601 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:08,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:08,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1789273578, now seen corresponding path program 3 times [2024-10-12 15:10:08,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:08,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527355118] [2024-10-12 15:10:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:08,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:09,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:09,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527355118] [2024-10-12 15:10:09,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527355118] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:09,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270827175] [2024-10-12 15:10:09,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 15:10:09,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:09,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:10:09,059 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) [2024-10-12 15:10:09,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 15:10:09,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 15:10:09,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 15:10:09,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-12 15:10:09,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:10:09,321 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2024-10-12 15:10:09,321 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:10:09,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270827175] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:10:09,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:10:09,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 22 [2024-10-12 15:10:09,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085827350] [2024-10-12 15:10:09,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:10:09,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 15:10:09,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:09,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 15:10:09,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2024-10-12 15:10:09,323 INFO L87 Difference]: Start difference. First operand 283 states and 416 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:09,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:09,499 INFO L93 Difference]: Finished difference Result 885 states and 1348 transitions. [2024-10-12 15:10:09,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 15:10:09,500 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 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 149 [2024-10-12 15:10:09,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:09,503 INFO L225 Difference]: With dead ends: 885 [2024-10-12 15:10:09,503 INFO L226 Difference]: Without dead ends: 612 [2024-10-12 15:10:09,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2024-10-12 15:10:09,505 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 108 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:09,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1158 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 15:10:09,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2024-10-12 15:10:09,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 605. [2024-10-12 15:10:09,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 604 states have (on average 1.4370860927152318) internal successors, (868), 604 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:09,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 868 transitions. [2024-10-12 15:10:09,536 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 868 transitions. Word has length 149 [2024-10-12 15:10:09,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:09,537 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 868 transitions. [2024-10-12 15:10:09,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:09,537 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 868 transitions. [2024-10-12 15:10:09,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-10-12 15:10:09,541 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:09,541 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:09,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 15:10:09,741 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 [2024-10-12 15:10:09,742 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:09,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:09,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1410286928, now seen corresponding path program 1 times [2024-10-12 15:10:09,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:09,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086230406] [2024-10-12 15:10:09,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:09,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:09,943 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 91 proven. 9 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-10-12 15:10:09,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:09,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086230406] [2024-10-12 15:10:09,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086230406] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:09,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984382619] [2024-10-12 15:10:09,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:09,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:09,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:10:09,946 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) [2024-10-12 15:10:09,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 15:10:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:10,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 15:10:10,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:10:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 46 proven. 102 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2024-10-12 15:10:10,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:10:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 139 proven. 9 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2024-10-12 15:10:10,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984382619] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 15:10:10,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 15:10:10,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2024-10-12 15:10:10,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689620009] [2024-10-12 15:10:10,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 15:10:10,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 15:10:10,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:10,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 15:10:10,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-12 15:10:10,462 INFO L87 Difference]: Start difference. First operand 605 states and 868 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:10,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:10,551 INFO L93 Difference]: Finished difference Result 1456 states and 2068 transitions. [2024-10-12 15:10:10,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 15:10:10,552 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 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 150 [2024-10-12 15:10:10,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:10,555 INFO L225 Difference]: With dead ends: 1456 [2024-10-12 15:10:10,555 INFO L226 Difference]: Without dead ends: 921 [2024-10-12 15:10:10,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-12 15:10:10,559 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 113 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:10,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 662 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 15:10:10,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2024-10-12 15:10:10,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 919. [2024-10-12 15:10:10,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 918 states have (on average 1.3877995642701526) internal successors, (1274), 918 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:10,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1274 transitions. [2024-10-12 15:10:10,580 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1274 transitions. Word has length 150 [2024-10-12 15:10:10,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:10,581 INFO L471 AbstractCegarLoop]: Abstraction has 919 states and 1274 transitions. [2024-10-12 15:10:10,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1274 transitions. [2024-10-12 15:10:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-10-12 15:10:10,584 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:10,584 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:10,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-12 15:10:10,788 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 [2024-10-12 15:10:10,788 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:10,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:10,789 INFO L85 PathProgramCache]: Analyzing trace with hash -365398478, now seen corresponding path program 1 times [2024-10-12 15:10:10,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:10,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365020048] [2024-10-12 15:10:10,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:10,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:11,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:11,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365020048] [2024-10-12 15:10:11,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365020048] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:11,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994845863] [2024-10-12 15:10:11,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:11,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:11,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:10:11,180 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) [2024-10-12 15:10:11,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 15:10:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:11,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 15:10:11,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:10:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-10-12 15:10:11,304 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:10:11,356 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2024-10-12 15:10:11,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994845863] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:11,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 15:10:11,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12, 5] total 17 [2024-10-12 15:10:11,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110485200] [2024-10-12 15:10:11,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:10:11,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:10:11,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:11,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:10:11,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-10-12 15:10:11,358 INFO L87 Difference]: Start difference. First operand 919 states and 1274 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:12,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:12,201 INFO L93 Difference]: Finished difference Result 984 states and 1371 transitions. [2024-10-12 15:10:12,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:10:12,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 150 [2024-10-12 15:10:12,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:12,205 INFO L225 Difference]: With dead ends: 984 [2024-10-12 15:10:12,205 INFO L226 Difference]: Without dead ends: 975 [2024-10-12 15:10:12,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-10-12 15:10:12,206 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 32 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:12,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 360 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 15:10:12,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2024-10-12 15:10:12,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 975. [2024-10-12 15:10:12,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 1.3963039014373717) internal successors, (1360), 974 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:12,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1360 transitions. [2024-10-12 15:10:12,233 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1360 transitions. Word has length 150 [2024-10-12 15:10:12,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:12,233 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1360 transitions. [2024-10-12 15:10:12,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:12,234 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1360 transitions. [2024-10-12 15:10:12,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-10-12 15:10:12,235 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:12,235 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:12,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 15:10:12,436 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 [2024-10-12 15:10:12,436 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:12,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:12,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1261696569, now seen corresponding path program 1 times [2024-10-12 15:10:12,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:12,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061516777] [2024-10-12 15:10:12,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:12,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:12,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:12,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061516777] [2024-10-12 15:10:12,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061516777] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:12,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001981716] [2024-10-12 15:10:12,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:12,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:12,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:10:12,781 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) [2024-10-12 15:10:12,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 15:10:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:12,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 15:10:12,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:10:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-10-12 15:10:12,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:10:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2024-10-12 15:10:12,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001981716] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:12,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 15:10:12,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 6] total 19 [2024-10-12 15:10:12,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559862271] [2024-10-12 15:10:12,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:10:12,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 15:10:12,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:12,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 15:10:12,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-10-12 15:10:12,984 INFO L87 Difference]: Start difference. First operand 975 states and 1360 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:13,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:13,142 INFO L93 Difference]: Finished difference Result 1016 states and 1418 transitions. [2024-10-12 15:10:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 15:10:13,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 150 [2024-10-12 15:10:13,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:13,146 INFO L225 Difference]: With dead ends: 1016 [2024-10-12 15:10:13,146 INFO L226 Difference]: Without dead ends: 990 [2024-10-12 15:10:13,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-10-12 15:10:13,147 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:13,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 473 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 15:10:13,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-10-12 15:10:13,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 990. [2024-10-12 15:10:13,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 989 states have (on average 1.3923154701718907) internal successors, (1377), 989 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:13,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1377 transitions. [2024-10-12 15:10:13,173 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1377 transitions. Word has length 150 [2024-10-12 15:10:13,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:13,174 INFO L471 AbstractCegarLoop]: Abstraction has 990 states and 1377 transitions. [2024-10-12 15:10:13,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:13,174 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1377 transitions. [2024-10-12 15:10:13,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-10-12 15:10:13,176 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:13,176 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:13,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 15:10:13,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:13,381 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:13,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:13,381 INFO L85 PathProgramCache]: Analyzing trace with hash 783554901, now seen corresponding path program 1 times [2024-10-12 15:10:13,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:13,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620547889] [2024-10-12 15:10:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:13,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:13,556 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2024-10-12 15:10:13,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:13,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620547889] [2024-10-12 15:10:13,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620547889] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:10:13,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:10:13,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 15:10:13,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237519821] [2024-10-12 15:10:13,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:10:13,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:10:13,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:13,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:10:13,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:10:13,559 INFO L87 Difference]: Start difference. First operand 990 states and 1377 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:13,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:13,595 INFO L93 Difference]: Finished difference Result 2260 states and 3167 transitions. [2024-10-12 15:10:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:10:13,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 150 [2024-10-12 15:10:13,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:13,599 INFO L225 Difference]: With dead ends: 2260 [2024-10-12 15:10:13,599 INFO L226 Difference]: Without dead ends: 1295 [2024-10-12 15:10:13,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:10:13,602 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 7 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:13,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 380 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 15:10:13,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2024-10-12 15:10:13,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1295. [2024-10-12 15:10:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1294 states have (on average 1.3415765069551777) internal successors, (1736), 1294 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1736 transitions. [2024-10-12 15:10:13,632 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1736 transitions. Word has length 150 [2024-10-12 15:10:13,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:13,632 INFO L471 AbstractCegarLoop]: Abstraction has 1295 states and 1736 transitions. [2024-10-12 15:10:13,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:13,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1736 transitions. [2024-10-12 15:10:13,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-10-12 15:10:13,634 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:13,634 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:13,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 15:10:13,635 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:13,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:13,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1733582516, now seen corresponding path program 2 times [2024-10-12 15:10:13,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:13,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550758752] [2024-10-12 15:10:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:13,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:13,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:13,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550758752] [2024-10-12 15:10:13,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550758752] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:13,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469121140] [2024-10-12 15:10:13,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 15:10:13,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:13,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:10:13,977 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:10:13,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 15:10:14,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 15:10:14,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 15:10:14,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-12 15:10:14,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:10:14,454 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 44 proven. 65 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2024-10-12 15:10:14,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:10:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 8 proven. 101 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2024-10-12 15:10:14,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469121140] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 15:10:14,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 15:10:14,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 14] total 36 [2024-10-12 15:10:14,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183688341] [2024-10-12 15:10:14,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 15:10:14,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-10-12 15:10:14,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:14,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-10-12 15:10:14,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1192, Unknown=0, NotChecked=0, Total=1332 [2024-10-12 15:10:14,932 INFO L87 Difference]: Start difference. First operand 1295 states and 1736 transitions. Second operand has 37 states, 37 states have (on average 6.594594594594595) internal successors, (244), 36 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:22,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:22,777 INFO L93 Difference]: Finished difference Result 4123 states and 5776 transitions. [2024-10-12 15:10:22,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 342 states. [2024-10-12 15:10:22,778 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.594594594594595) internal successors, (244), 36 states have internal predecessors, (244), 0 states have call successors, (0), 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 151 [2024-10-12 15:10:22,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:22,785 INFO L225 Difference]: With dead ends: 4123 [2024-10-12 15:10:22,785 INFO L226 Difference]: Without dead ends: 3298 [2024-10-12 15:10:22,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 356 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55039 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=7332, Invalid=120474, Unknown=0, NotChecked=0, Total=127806 [2024-10-12 15:10:22,801 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 2112 mSDsluCounter, 6493 mSDsCounter, 0 mSdLazyCounter, 5057 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 6754 SdHoareTripleChecker+Invalid, 5319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 5057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:22,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2112 Valid, 6754 Invalid, 5319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 5057 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-12 15:10:22,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2024-10-12 15:10:22,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 1572. [2024-10-12 15:10:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1571 states have (on average 1.3647358370464673) internal successors, (2144), 1571 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2144 transitions. [2024-10-12 15:10:22,826 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2144 transitions. Word has length 151 [2024-10-12 15:10:22,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:22,826 INFO L471 AbstractCegarLoop]: Abstraction has 1572 states and 2144 transitions. [2024-10-12 15:10:22,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.594594594594595) internal successors, (244), 36 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:22,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2144 transitions. [2024-10-12 15:10:22,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-10-12 15:10:22,828 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:22,828 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:22,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 15:10:23,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-12 15:10:23,033 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:23,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:23,034 INFO L85 PathProgramCache]: Analyzing trace with hash -2135670601, now seen corresponding path program 1 times [2024-10-12 15:10:23,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:23,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55999187] [2024-10-12 15:10:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:23,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:23,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:23,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55999187] [2024-10-12 15:10:23,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55999187] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:23,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105566975] [2024-10-12 15:10:23,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:23,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:23,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:10:23,449 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:10:23,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 15:10:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:23,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 15:10:23,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:10:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-12 15:10:23,576 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:10:23,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105566975] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:10:23,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:10:23,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2024-10-12 15:10:23,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237531046] [2024-10-12 15:10:23,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:10:23,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 15:10:23,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:23,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 15:10:23,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-10-12 15:10:23,577 INFO L87 Difference]: Start difference. First operand 1572 states and 2144 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:23,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:23,674 INFO L93 Difference]: Finished difference Result 1593 states and 2171 transitions. [2024-10-12 15:10:23,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 15:10:23,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2024-10-12 15:10:23,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:23,678 INFO L225 Difference]: With dead ends: 1593 [2024-10-12 15:10:23,678 INFO L226 Difference]: Without dead ends: 1566 [2024-10-12 15:10:23,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-10-12 15:10:23,679 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:23,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 478 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 15:10:23,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2024-10-12 15:10:23,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1566. [2024-10-12 15:10:23,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 1565 states have (on average 1.3635782747603833) internal successors, (2134), 1565 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:23,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 2134 transitions. [2024-10-12 15:10:23,701 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 2134 transitions. Word has length 163 [2024-10-12 15:10:23,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:23,701 INFO L471 AbstractCegarLoop]: Abstraction has 1566 states and 2134 transitions. [2024-10-12 15:10:23,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:23,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 2134 transitions. [2024-10-12 15:10:23,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-10-12 15:10:23,704 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:23,704 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:23,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 15:10:23,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:23,905 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:23,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:23,905 INFO L85 PathProgramCache]: Analyzing trace with hash -2033446774, now seen corresponding path program 1 times [2024-10-12 15:10:23,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:23,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413909074] [2024-10-12 15:10:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:23,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:24,304 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:24,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:24,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413909074] [2024-10-12 15:10:24,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413909074] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:24,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805564565] [2024-10-12 15:10:24,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:24,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:24,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:10:24,306 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:10:24,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 15:10:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:24,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 15:10:24,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:10:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-10-12 15:10:24,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:10:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-12 15:10:24,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805564565] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:24,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 15:10:24,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13, 6] total 18 [2024-10-12 15:10:24,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127207060] [2024-10-12 15:10:24,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:10:24,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:10:24,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:24,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:10:24,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-10-12 15:10:24,450 INFO L87 Difference]: Start difference. First operand 1566 states and 2134 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:24,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:24,472 INFO L93 Difference]: Finished difference Result 1650 states and 2259 transitions. [2024-10-12 15:10:24,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:10:24,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2024-10-12 15:10:24,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:24,476 INFO L225 Difference]: With dead ends: 1650 [2024-10-12 15:10:24,476 INFO L226 Difference]: Without dead ends: 1574 [2024-10-12 15:10:24,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-10-12 15:10:24,478 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 1 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:24,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 251 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 15:10:24,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2024-10-12 15:10:24,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1574. [2024-10-12 15:10:24,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1573 states have (on average 1.3642720915448188) internal successors, (2146), 1573 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:24,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2146 transitions. [2024-10-12 15:10:24,501 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2146 transitions. Word has length 163 [2024-10-12 15:10:24,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:24,501 INFO L471 AbstractCegarLoop]: Abstraction has 1574 states and 2146 transitions. [2024-10-12 15:10:24,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:24,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2146 transitions. [2024-10-12 15:10:24,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-10-12 15:10:24,504 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:24,504 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:24,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 15:10:24,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-12 15:10:24,705 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:24,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:24,705 INFO L85 PathProgramCache]: Analyzing trace with hash 735670134, now seen corresponding path program 1 times [2024-10-12 15:10:24,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:24,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878613586] [2024-10-12 15:10:24,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:24,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 110 proven. 10 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2024-10-12 15:10:24,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:24,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878613586] [2024-10-12 15:10:24,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878613586] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:24,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309057804] [2024-10-12 15:10:24,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:24,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:24,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:10:24,914 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:10:24,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 15:10:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:24,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 15:10:24,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:10:25,179 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 90 proven. 111 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-10-12 15:10:25,180 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:10:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 191 proven. 10 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-10-12 15:10:25,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309057804] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 15:10:25,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 15:10:25,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2024-10-12 15:10:25,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973483025] [2024-10-12 15:10:25,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 15:10:25,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 15:10:25,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:25,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 15:10:25,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-12 15:10:25,367 INFO L87 Difference]: Start difference. First operand 1574 states and 2146 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:25,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:25,467 INFO L93 Difference]: Finished difference Result 3717 states and 4998 transitions. [2024-10-12 15:10:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 15:10:25,468 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2024-10-12 15:10:25,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:25,472 INFO L225 Difference]: With dead ends: 3717 [2024-10-12 15:10:25,472 INFO L226 Difference]: Without dead ends: 2245 [2024-10-12 15:10:25,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-12 15:10:25,474 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 75 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:25,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 848 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 15:10:25,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2024-10-12 15:10:25,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 2241. [2024-10-12 15:10:25,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2241 states, 2240 states have (on average 1.3120535714285715) internal successors, (2939), 2240 states have internal predecessors, (2939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:25,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 2939 transitions. [2024-10-12 15:10:25,505 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 2939 transitions. Word has length 163 [2024-10-12 15:10:25,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:25,505 INFO L471 AbstractCegarLoop]: Abstraction has 2241 states and 2939 transitions. [2024-10-12 15:10:25,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:25,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 2939 transitions. [2024-10-12 15:10:25,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-10-12 15:10:25,508 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:25,508 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:25,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 15:10:25,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 15:10:25,709 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:25,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:25,709 INFO L85 PathProgramCache]: Analyzing trace with hash -332479669, now seen corresponding path program 1 times [2024-10-12 15:10:25,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:25,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527757040] [2024-10-12 15:10:25,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:25,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:26,040 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:26,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:26,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527757040] [2024-10-12 15:10:26,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527757040] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:26,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416675553] [2024-10-12 15:10:26,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:26,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:26,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:10:26,042 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:10:26,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 15:10:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:26,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 15:10:26,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:10:26,162 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-10-12 15:10:26,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:10:26,208 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-12 15:10:26,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416675553] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:26,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 15:10:26,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 6] total 20 [2024-10-12 15:10:26,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728234479] [2024-10-12 15:10:26,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:10:26,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 15:10:26,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:26,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 15:10:26,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-10-12 15:10:26,209 INFO L87 Difference]: Start difference. First operand 2241 states and 2939 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:26,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:26,312 INFO L93 Difference]: Finished difference Result 2319 states and 3048 transitions. [2024-10-12 15:10:26,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 15:10:26,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 164 [2024-10-12 15:10:26,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:26,318 INFO L225 Difference]: With dead ends: 2319 [2024-10-12 15:10:26,318 INFO L226 Difference]: Without dead ends: 2256 [2024-10-12 15:10:26,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-10-12 15:10:26,319 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:26,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 473 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 15:10:26,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2024-10-12 15:10:26,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2256. [2024-10-12 15:10:26,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.3108647450110864) internal successors, (2956), 2255 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 2956 transitions. [2024-10-12 15:10:26,349 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 2956 transitions. Word has length 164 [2024-10-12 15:10:26,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:26,349 INFO L471 AbstractCegarLoop]: Abstraction has 2256 states and 2956 transitions. [2024-10-12 15:10:26,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:26,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 2956 transitions. [2024-10-12 15:10:26,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-10-12 15:10:26,352 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:26,352 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:26,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-12 15:10:26,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-12 15:10:26,556 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:26,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:26,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1517680494, now seen corresponding path program 1 times [2024-10-12 15:10:26,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:26,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533782086] [2024-10-12 15:10:26,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:26,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:26,912 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:26,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:26,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533782086] [2024-10-12 15:10:26,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533782086] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:26,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581158115] [2024-10-12 15:10:26,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:26,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:26,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:10:26,915 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:10:26,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 15:10:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:27,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 15:10:27,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:10:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-10-12 15:10:27,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:10:27,087 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-12 15:10:27,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581158115] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:27,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 15:10:27,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 6] total 20 [2024-10-12 15:10:27,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601461828] [2024-10-12 15:10:27,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:10:27,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 15:10:27,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:27,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 15:10:27,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-10-12 15:10:27,089 INFO L87 Difference]: Start difference. First operand 2256 states and 2956 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:27,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:27,182 INFO L93 Difference]: Finished difference Result 2447 states and 3231 transitions. [2024-10-12 15:10:27,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 15:10:27,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 164 [2024-10-12 15:10:27,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:27,188 INFO L225 Difference]: With dead ends: 2447 [2024-10-12 15:10:27,188 INFO L226 Difference]: Without dead ends: 2272 [2024-10-12 15:10:27,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-10-12 15:10:27,189 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:27,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 474 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 15:10:27,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2024-10-12 15:10:27,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2272. [2024-10-12 15:10:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2272 states, 2271 states have (on average 1.310435931307794) internal successors, (2976), 2271 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:27,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2272 states to 2272 states and 2976 transitions. [2024-10-12 15:10:27,228 INFO L78 Accepts]: Start accepts. Automaton has 2272 states and 2976 transitions. Word has length 164 [2024-10-12 15:10:27,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:27,229 INFO L471 AbstractCegarLoop]: Abstraction has 2272 states and 2976 transitions. [2024-10-12 15:10:27,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:27,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2272 states and 2976 transitions. [2024-10-12 15:10:27,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-10-12 15:10:27,232 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:27,232 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:27,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-12 15:10:27,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-12 15:10:27,436 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:27,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:27,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1450998176, now seen corresponding path program 2 times [2024-10-12 15:10:27,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:27,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001850831] [2024-10-12 15:10:27,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:27,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:27,636 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-10-12 15:10:27,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:27,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001850831] [2024-10-12 15:10:27,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001850831] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:10:27,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:10:27,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 15:10:27,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130084289] [2024-10-12 15:10:27,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:10:27,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 15:10:27,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:27,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 15:10:27,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:10:27,638 INFO L87 Difference]: Start difference. First operand 2272 states and 2976 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:27,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:27,686 INFO L93 Difference]: Finished difference Result 3811 states and 5099 transitions. [2024-10-12 15:10:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 15:10:27,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 164 [2024-10-12 15:10:27,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:27,691 INFO L225 Difference]: With dead ends: 3811 [2024-10-12 15:10:27,691 INFO L226 Difference]: Without dead ends: 2316 [2024-10-12 15:10:27,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:10:27,693 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 47 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:27,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 313 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 15:10:27,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2024-10-12 15:10:27,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2312. [2024-10-12 15:10:27,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2311 states have (on average 1.305062743401125) internal successors, (3016), 2311 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:27,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 3016 transitions. [2024-10-12 15:10:27,724 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 3016 transitions. Word has length 164 [2024-10-12 15:10:27,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:27,725 INFO L471 AbstractCegarLoop]: Abstraction has 2312 states and 3016 transitions. [2024-10-12 15:10:27,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:27,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 3016 transitions. [2024-10-12 15:10:27,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-12 15:10:27,728 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:27,728 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:27,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 15:10:27,728 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:27,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:27,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1022257921, now seen corresponding path program 1 times [2024-10-12 15:10:27,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:27,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627281513] [2024-10-12 15:10:27,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:27,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:28,046 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 0 proven. 653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:28,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:28,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627281513] [2024-10-12 15:10:28,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627281513] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:28,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292452465] [2024-10-12 15:10:28,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:28,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:28,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:10:28,049 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:10:28,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 15:10:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:28,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 15:10:28,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:10:28,344 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 51 proven. 21 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-10-12 15:10:28,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:10:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-10-12 15:10:28,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292452465] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:28,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 15:10:28,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 6] total 21 [2024-10-12 15:10:28,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18563370] [2024-10-12 15:10:28,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:10:28,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 15:10:28,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:28,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 15:10:28,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-10-12 15:10:28,552 INFO L87 Difference]: Start difference. First operand 2312 states and 3016 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:32,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 15:10:36,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 15:10:40,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 15:10:44,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 15:10:48,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 15:10:51,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 15:10:53,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 15:10:53,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:53,450 INFO L93 Difference]: Finished difference Result 3159 states and 4069 transitions. [2024-10-12 15:10:53,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 15:10:53,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 165 [2024-10-12 15:10:53,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:53,457 INFO L225 Difference]: With dead ends: 3159 [2024-10-12 15:10:53,457 INFO L226 Difference]: Without dead ends: 2868 [2024-10-12 15:10:53,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-10-12 15:10:53,458 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 66 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:53,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 462 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 24.9s Time] [2024-10-12 15:10:53,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2024-10-12 15:10:53,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2859. [2024-10-12 15:10:53,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2858 states have (on average 1.2834149755073478) internal successors, (3668), 2858 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:53,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 3668 transitions. [2024-10-12 15:10:53,496 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 3668 transitions. Word has length 165 [2024-10-12 15:10:53,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:53,496 INFO L471 AbstractCegarLoop]: Abstraction has 2859 states and 3668 transitions. [2024-10-12 15:10:53,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:53,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 3668 transitions. [2024-10-12 15:10:53,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-12 15:10:53,500 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:53,500 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:53,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-12 15:10:53,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:53,701 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:53,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:53,701 INFO L85 PathProgramCache]: Analyzing trace with hash 715960593, now seen corresponding path program 1 times [2024-10-12 15:10:53,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:53,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272635377] [2024-10-12 15:10:53,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:53,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:54,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:54,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272635377] [2024-10-12 15:10:54,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272635377] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:54,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674019209] [2024-10-12 15:10:54,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:54,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:54,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:10:54,039 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:10:54,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 15:10:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:54,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 15:10:54,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:10:54,182 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-12 15:10:54,182 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:10:54,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674019209] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:10:54,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:10:54,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2024-10-12 15:10:54,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016022018] [2024-10-12 15:10:54,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:10:54,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 15:10:54,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:54,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 15:10:54,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-10-12 15:10:54,184 INFO L87 Difference]: Start difference. First operand 2859 states and 3668 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:54,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:54,319 INFO L93 Difference]: Finished difference Result 2917 states and 3746 transitions. [2024-10-12 15:10:54,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 15:10:54,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 165 [2024-10-12 15:10:54,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:54,326 INFO L225 Difference]: With dead ends: 2917 [2024-10-12 15:10:54,326 INFO L226 Difference]: Without dead ends: 2853 [2024-10-12 15:10:54,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-10-12 15:10:54,327 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:54,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 478 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 15:10:54,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2853 states. [2024-10-12 15:10:54,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2853 to 2853. [2024-10-12 15:10:54,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2853 states, 2852 states have (on average 1.2826086956521738) internal successors, (3658), 2852 states have internal predecessors, (3658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:54,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 3658 transitions. [2024-10-12 15:10:54,367 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 3658 transitions. Word has length 165 [2024-10-12 15:10:54,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:54,367 INFO L471 AbstractCegarLoop]: Abstraction has 2853 states and 3658 transitions. [2024-10-12 15:10:54,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:54,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 3658 transitions. [2024-10-12 15:10:54,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-12 15:10:54,371 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:54,371 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:54,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-12 15:10:54,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 15:10:54,572 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:54,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:54,572 INFO L85 PathProgramCache]: Analyzing trace with hash -539606701, now seen corresponding path program 1 times [2024-10-12 15:10:54,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:54,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598290432] [2024-10-12 15:10:54,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:54,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:54,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:54,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598290432] [2024-10-12 15:10:54,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598290432] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:54,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916614068] [2024-10-12 15:10:54,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:54,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:54,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:10:54,896 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:10:54,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-12 15:10:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:54,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 15:10:54,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:10:55,006 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-12 15:10:55,006 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:10:55,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916614068] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:10:55,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:10:55,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16 [2024-10-12 15:10:55,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056856543] [2024-10-12 15:10:55,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:10:55,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:10:55,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:55,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:10:55,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-10-12 15:10:55,008 INFO L87 Difference]: Start difference. First operand 2853 states and 3658 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:55,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:10:55,775 INFO L93 Difference]: Finished difference Result 3021 states and 3887 transitions. [2024-10-12 15:10:55,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:10:55,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 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 165 [2024-10-12 15:10:55,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:10:55,780 INFO L225 Difference]: With dead ends: 3021 [2024-10-12 15:10:55,780 INFO L226 Difference]: Without dead ends: 2848 [2024-10-12 15:10:55,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-10-12 15:10:55,781 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 15:10:55,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 360 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 15:10:55,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2024-10-12 15:10:55,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 2848. [2024-10-12 15:10:55,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2847 states have (on average 1.2813487881981032) internal successors, (3648), 2847 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:55,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 3648 transitions. [2024-10-12 15:10:55,823 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 3648 transitions. Word has length 165 [2024-10-12 15:10:55,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:10:55,824 INFO L471 AbstractCegarLoop]: Abstraction has 2848 states and 3648 transitions. [2024-10-12 15:10:55,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:10:55,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 3648 transitions. [2024-10-12 15:10:55,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-12 15:10:55,828 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:10:55,828 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:10:55,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-12 15:10:56,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:56,029 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:10:56,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:10:56,030 INFO L85 PathProgramCache]: Analyzing trace with hash -778912676, now seen corresponding path program 1 times [2024-10-12 15:10:56,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:10:56,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399856593] [2024-10-12 15:10:56,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:56,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:10:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:10:56,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:10:56,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399856593] [2024-10-12 15:10:56,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399856593] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:56,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527570160] [2024-10-12 15:10:56,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:10:56,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:10:56,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:10:56,410 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:10:56,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-12 15:10:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:10:56,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-12 15:10:56,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:10:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2024-10-12 15:10:56,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:10:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2024-10-12 15:10:56,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527570160] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 15:10:56,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 15:10:56,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 6] total 21 [2024-10-12 15:10:56,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186897853] [2024-10-12 15:10:56,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:10:56,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 15:10:56,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:10:56,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 15:10:56,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-10-12 15:10:56,815 INFO L87 Difference]: Start difference. First operand 2848 states and 3648 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) [2024-10-12 15:11:01,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 15:11:05,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 15:11:09,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 15:11:12,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.27s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 15:11:16,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 15:11:20,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.74s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 15:11:24,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 15:11:24,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:11:24,151 INFO L93 Difference]: Finished difference Result 3154 states and 4089 transitions. [2024-10-12 15:11:24,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 15:11:24,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) Word has length 165 [2024-10-12 15:11:24,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:11:24,155 INFO L225 Difference]: With dead ends: 3154 [2024-10-12 15:11:24,155 INFO L226 Difference]: Without dead ends: 2856 [2024-10-12 15:11:24,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-10-12 15:11:24,156 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 23 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2024-10-12 15:11:24,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 495 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 5 Unknown, 0 Unchecked, 27.3s Time] [2024-10-12 15:11:24,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2024-10-12 15:11:24,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2856. [2024-10-12 15:11:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2856 states, 2855 states have (on average 1.2802101576182137) internal successors, (3655), 2855 states have internal predecessors, (3655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:24,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 3655 transitions. [2024-10-12 15:11:24,188 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 3655 transitions. Word has length 165 [2024-10-12 15:11:24,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:11:24,189 INFO L471 AbstractCegarLoop]: Abstraction has 2856 states and 3655 transitions. [2024-10-12 15:11:24,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) [2024-10-12 15:11:24,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 3655 transitions. [2024-10-12 15:11:24,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-12 15:11:24,192 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:11:24,192 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:11:24,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-12 15:11:24,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:11:24,393 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:11:24,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:11:24,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1937505467, now seen corresponding path program 1 times [2024-10-12 15:11:24,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:11:24,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834459242] [2024-10-12 15:11:24,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:24,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:11:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:24,681 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 0 proven. 653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:11:24,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:11:24,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834459242] [2024-10-12 15:11:24,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834459242] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:11:24,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922456695] [2024-10-12 15:11:24,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:24,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:11:24,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:11:24,683 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:11:24,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-12 15:11:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:24,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 15:11:24,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:11:25,115 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 62 proven. 10 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-10-12 15:11:25,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:11:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-10-12 15:11:25,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922456695] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 15:11:25,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 15:11:25,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13, 6] total 21 [2024-10-12 15:11:25,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91441748] [2024-10-12 15:11:25,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:11:25,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 15:11:25,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:11:25,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 15:11:25,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-10-12 15:11:25,488 INFO L87 Difference]: Start difference. First operand 2856 states and 3655 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:25,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:11:25,638 INFO L93 Difference]: Finished difference Result 2971 states and 3816 transitions. [2024-10-12 15:11:25,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 15:11:25,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 166 [2024-10-12 15:11:25,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:11:25,642 INFO L225 Difference]: With dead ends: 2971 [2024-10-12 15:11:25,642 INFO L226 Difference]: Without dead ends: 2860 [2024-10-12 15:11:25,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-10-12 15:11:25,644 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 53 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 15:11:25,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 756 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 15:11:25,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2024-10-12 15:11:25,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2860. [2024-10-12 15:11:25,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2860 states, 2859 states have (on average 1.279818118223155) internal successors, (3659), 2859 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:25,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 3659 transitions. [2024-10-12 15:11:25,680 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 3659 transitions. Word has length 166 [2024-10-12 15:11:25,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:11:25,680 INFO L471 AbstractCegarLoop]: Abstraction has 2860 states and 3659 transitions. [2024-10-12 15:11:25,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:25,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 3659 transitions. [2024-10-12 15:11:25,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-12 15:11:25,685 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:11:25,685 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:11:25,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-12 15:11:25,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:11:25,890 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:11:25,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:11:25,891 INFO L85 PathProgramCache]: Analyzing trace with hash -892805294, now seen corresponding path program 1 times [2024-10-12 15:11:25,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:11:25,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652683072] [2024-10-12 15:11:25,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:25,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:11:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:11:26,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:11:26,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652683072] [2024-10-12 15:11:26,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652683072] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:11:26,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993415744] [2024-10-12 15:11:26,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:26,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:11:26,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:11:26,238 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:11:26,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-12 15:11:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:26,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 15:11:26,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:11:26,373 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-10-12 15:11:26,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:11:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-12 15:11:26,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993415744] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 15:11:26,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 15:11:26,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13, 6] total 18 [2024-10-12 15:11:26,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111717754] [2024-10-12 15:11:26,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:11:26,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:11:26,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:11:26,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:11:26,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-10-12 15:11:26,398 INFO L87 Difference]: Start difference. First operand 2860 states and 3659 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:26,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:11:26,427 INFO L93 Difference]: Finished difference Result 2945 states and 3778 transitions. [2024-10-12 15:11:26,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:11:26,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 166 [2024-10-12 15:11:26,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:11:26,430 INFO L225 Difference]: With dead ends: 2945 [2024-10-12 15:11:26,430 INFO L226 Difference]: Without dead ends: 2868 [2024-10-12 15:11:26,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-10-12 15:11:26,431 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 1 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 15:11:26,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 251 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 15:11:26,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2024-10-12 15:11:26,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2868. [2024-10-12 15:11:26,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2868 states, 2867 states have (on average 1.2800837111963725) internal successors, (3670), 2867 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:26,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2868 states to 2868 states and 3670 transitions. [2024-10-12 15:11:26,462 INFO L78 Accepts]: Start accepts. Automaton has 2868 states and 3670 transitions. Word has length 166 [2024-10-12 15:11:26,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:11:26,462 INFO L471 AbstractCegarLoop]: Abstraction has 2868 states and 3670 transitions. [2024-10-12 15:11:26,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:26,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2868 states and 3670 transitions. [2024-10-12 15:11:26,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-12 15:11:26,465 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:11:26,466 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:11:26,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-12 15:11:26,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:11:26,670 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:11:26,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:11:26,671 INFO L85 PathProgramCache]: Analyzing trace with hash -393351231, now seen corresponding path program 1 times [2024-10-12 15:11:26,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:11:26,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542098923] [2024-10-12 15:11:26,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:26,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:11:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:11:26,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:11:26,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542098923] [2024-10-12 15:11:26,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542098923] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:11:26,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394981542] [2024-10-12 15:11:26,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:26,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:11:26,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:11:26,975 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:11:26,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-12 15:11:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:27,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 15:11:27,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:11:27,108 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-10-12 15:11:27,109 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:11:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-12 15:11:27,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394981542] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 15:11:27,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 15:11:27,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 6] total 20 [2024-10-12 15:11:27,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556361011] [2024-10-12 15:11:27,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:11:27,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 15:11:27,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:11:27,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 15:11:27,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-10-12 15:11:27,168 INFO L87 Difference]: Start difference. First operand 2868 states and 3670 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:27,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:11:27,683 INFO L93 Difference]: Finished difference Result 3133 states and 4044 transitions. [2024-10-12 15:11:27,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 15:11:27,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 166 [2024-10-12 15:11:27,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:11:27,687 INFO L225 Difference]: With dead ends: 3133 [2024-10-12 15:11:27,687 INFO L226 Difference]: Without dead ends: 2888 [2024-10-12 15:11:27,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-10-12 15:11:27,688 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:11:27,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 474 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:11:27,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2024-10-12 15:11:27,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2888. [2024-10-12 15:11:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2887 states have (on average 1.279875303082785) internal successors, (3695), 2887 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 3695 transitions. [2024-10-12 15:11:27,720 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 3695 transitions. Word has length 166 [2024-10-12 15:11:27,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:11:27,720 INFO L471 AbstractCegarLoop]: Abstraction has 2888 states and 3695 transitions. [2024-10-12 15:11:27,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:27,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 3695 transitions. [2024-10-12 15:11:27,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-12 15:11:27,724 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:11:27,724 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:11:27,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-12 15:11:27,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-12 15:11:27,928 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:11:27,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:11:27,929 INFO L85 PathProgramCache]: Analyzing trace with hash 883810176, now seen corresponding path program 1 times [2024-10-12 15:11:27,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:11:27,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177976396] [2024-10-12 15:11:27,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:27,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:11:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:28,214 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:11:28,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:11:28,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177976396] [2024-10-12 15:11:28,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177976396] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:11:28,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916398065] [2024-10-12 15:11:28,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:28,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:11:28,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:11:28,216 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:11:28,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-12 15:11:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:28,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 15:11:28,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:11:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 89 proven. 9 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2024-10-12 15:11:28,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:11:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2024-10-12 15:11:28,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916398065] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 15:11:28,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 15:11:28,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13, 6] total 21 [2024-10-12 15:11:28,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063095323] [2024-10-12 15:11:28,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:11:28,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 15:11:28,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:11:28,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 15:11:28,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-10-12 15:11:28,510 INFO L87 Difference]: Start difference. First operand 2888 states and 3695 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:28,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:11:28,654 INFO L93 Difference]: Finished difference Result 3207 states and 4147 transitions. [2024-10-12 15:11:28,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 15:11:28,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 166 [2024-10-12 15:11:28,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:11:28,657 INFO L225 Difference]: With dead ends: 3207 [2024-10-12 15:11:28,657 INFO L226 Difference]: Without dead ends: 2892 [2024-10-12 15:11:28,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-10-12 15:11:28,658 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 48 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 15:11:28,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 483 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 15:11:28,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2024-10-12 15:11:28,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2892. [2024-10-12 15:11:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2891 states have (on average 1.2791421653407125) internal successors, (3698), 2891 states have internal predecessors, (3698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:28,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 3698 transitions. [2024-10-12 15:11:28,685 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 3698 transitions. Word has length 166 [2024-10-12 15:11:28,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:11:28,685 INFO L471 AbstractCegarLoop]: Abstraction has 2892 states and 3698 transitions. [2024-10-12 15:11:28,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:28,686 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 3698 transitions. [2024-10-12 15:11:28,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-12 15:11:28,688 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:11:28,689 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:11:28,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-12 15:11:28,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-12 15:11:28,893 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:11:28,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:11:28,893 INFO L85 PathProgramCache]: Analyzing trace with hash 481740379, now seen corresponding path program 1 times [2024-10-12 15:11:28,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:11:28,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926065783] [2024-10-12 15:11:28,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:28,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:11:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 0 proven. 653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:11:29,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:11:29,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926065783] [2024-10-12 15:11:29,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926065783] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:11:29,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434105580] [2024-10-12 15:11:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:29,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:11:29,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:11:29,163 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:11:29,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-12 15:11:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:29,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 15:11:29,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:11:29,351 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 653 trivial. 0 not checked. [2024-10-12 15:11:29,351 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:11:29,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434105580] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:11:29,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:11:29,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2024-10-12 15:11:29,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898893856] [2024-10-12 15:11:29,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:11:29,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 15:11:29,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:11:29,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 15:11:29,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-10-12 15:11:29,352 INFO L87 Difference]: Start difference. First operand 2892 states and 3698 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:29,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:11:29,444 INFO L93 Difference]: Finished difference Result 3023 states and 3878 transitions. [2024-10-12 15:11:29,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 15:11:29,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2024-10-12 15:11:29,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:11:29,449 INFO L225 Difference]: With dead ends: 3023 [2024-10-12 15:11:29,449 INFO L226 Difference]: Without dead ends: 2904 [2024-10-12 15:11:29,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-10-12 15:11:29,450 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 34 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 15:11:29,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 419 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 15:11:29,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2024-10-12 15:11:29,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2900. [2024-10-12 15:11:29,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2900 states, 2899 states have (on average 1.2783718523628838) internal successors, (3706), 2899 states have internal predecessors, (3706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:29,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2900 states to 2900 states and 3706 transitions. [2024-10-12 15:11:29,483 INFO L78 Accepts]: Start accepts. Automaton has 2900 states and 3706 transitions. Word has length 167 [2024-10-12 15:11:29,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:11:29,483 INFO L471 AbstractCegarLoop]: Abstraction has 2900 states and 3706 transitions. [2024-10-12 15:11:29,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:29,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2900 states and 3706 transitions. [2024-10-12 15:11:29,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-12 15:11:29,486 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:11:29,486 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:11:29,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-10-12 15:11:29,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:11:29,690 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:11:29,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:11:29,691 INFO L85 PathProgramCache]: Analyzing trace with hash -756542770, now seen corresponding path program 1 times [2024-10-12 15:11:29,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:11:29,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57422664] [2024-10-12 15:11:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:29,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:11:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:29,977 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:11:29,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:11:29,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57422664] [2024-10-12 15:11:29,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57422664] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:11:29,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063503177] [2024-10-12 15:11:29,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:29,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:11:29,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:11:29,979 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:11:29,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-12 15:11:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:30,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 15:11:30,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:11:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-10-12 15:11:30,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:11:30,160 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-12 15:11:30,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063503177] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 15:11:30,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 15:11:30,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 6] total 20 [2024-10-12 15:11:30,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955105604] [2024-10-12 15:11:30,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:11:30,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 15:11:30,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:11:30,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 15:11:30,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-10-12 15:11:30,161 INFO L87 Difference]: Start difference. First operand 2900 states and 3706 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:30,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:11:30,331 INFO L93 Difference]: Finished difference Result 3019 states and 3870 transitions. [2024-10-12 15:11:30,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 15:11:30,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2024-10-12 15:11:30,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:11:30,335 INFO L225 Difference]: With dead ends: 3019 [2024-10-12 15:11:30,335 INFO L226 Difference]: Without dead ends: 2915 [2024-10-12 15:11:30,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-10-12 15:11:30,336 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 15:11:30,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 473 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 15:11:30,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2024-10-12 15:11:30,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2915. [2024-10-12 15:11:30,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2915 states, 2914 states have (on average 1.2776252573781743) internal successors, (3723), 2914 states have internal predecessors, (3723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:30,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2915 states to 2915 states and 3723 transitions. [2024-10-12 15:11:30,368 INFO L78 Accepts]: Start accepts. Automaton has 2915 states and 3723 transitions. Word has length 167 [2024-10-12 15:11:30,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:11:30,368 INFO L471 AbstractCegarLoop]: Abstraction has 2915 states and 3723 transitions. [2024-10-12 15:11:30,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:30,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states and 3723 transitions. [2024-10-12 15:11:30,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-12 15:11:30,371 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:11:30,371 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:11:30,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-12 15:11:30,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:11:30,572 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:11:30,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:11:30,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1408721735, now seen corresponding path program 1 times [2024-10-12 15:11:30,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:11:30,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143235055] [2024-10-12 15:11:30,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:30,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:11:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:11:30,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:11:30,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143235055] [2024-10-12 15:11:30,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143235055] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:11:30,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181375502] [2024-10-12 15:11:30,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:30,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:11:30,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:11:30,848 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:11:30,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-12 15:11:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:30,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 15:11:30,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:11:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-10-12 15:11:30,973 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:11:30,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181375502] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:11:30,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:11:30,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2024-10-12 15:11:30,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258996480] [2024-10-12 15:11:30,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:11:30,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 15:11:30,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:11:30,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 15:11:30,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-10-12 15:11:30,975 INFO L87 Difference]: Start difference. First operand 2915 states and 3723 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:32,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-12 15:11:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:11:32,570 INFO L93 Difference]: Finished difference Result 3178 states and 4082 transitions. [2024-10-12 15:11:32,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 15:11:32,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2024-10-12 15:11:32,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:11:32,574 INFO L225 Difference]: With dead ends: 3178 [2024-10-12 15:11:32,574 INFO L226 Difference]: Without dead ends: 2910 [2024-10-12 15:11:32,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-10-12 15:11:32,575 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:11:32,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-12 15:11:32,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2024-10-12 15:11:32,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2910. [2024-10-12 15:11:32,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2909 states have (on average 1.2763836369886559) internal successors, (3713), 2909 states have internal predecessors, (3713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:32,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 3713 transitions. [2024-10-12 15:11:32,604 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 3713 transitions. Word has length 167 [2024-10-12 15:11:32,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:11:32,605 INFO L471 AbstractCegarLoop]: Abstraction has 2910 states and 3713 transitions. [2024-10-12 15:11:32,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:32,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 3713 transitions. [2024-10-12 15:11:32,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-12 15:11:32,608 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:11:32,608 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:11:32,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-12 15:11:32,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-12 15:11:32,808 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:11:32,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:11:32,809 INFO L85 PathProgramCache]: Analyzing trace with hash 2017848822, now seen corresponding path program 1 times [2024-10-12 15:11:32,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:11:32,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568775246] [2024-10-12 15:11:32,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:32,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:11:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:33,064 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:11:33,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:11:33,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568775246] [2024-10-12 15:11:33,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568775246] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:11:33,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267611172] [2024-10-12 15:11:33,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:33,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:11:33,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:11:33,066 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:11:33,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-12 15:11:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:33,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 15:11:33,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:11:33,251 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 89 proven. 9 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2024-10-12 15:11:33,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:11:33,325 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2024-10-12 15:11:33,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267611172] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 15:11:33,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 15:11:33,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13, 6] total 20 [2024-10-12 15:11:33,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328477652] [2024-10-12 15:11:33,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:11:33,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:11:33,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:11:33,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:11:33,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-10-12 15:11:33,326 INFO L87 Difference]: Start difference. First operand 2910 states and 3713 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:33,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:11:33,830 INFO L93 Difference]: Finished difference Result 3233 states and 4157 transitions. [2024-10-12 15:11:33,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:11:33,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2024-10-12 15:11:33,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:11:33,834 INFO L225 Difference]: With dead ends: 3233 [2024-10-12 15:11:33,834 INFO L226 Difference]: Without dead ends: 2920 [2024-10-12 15:11:33,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-10-12 15:11:33,835 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 5 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:11:33,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 334 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:11:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2024-10-12 15:11:33,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 2920. [2024-10-12 15:11:33,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2919 states have (on average 1.275436793422405) internal successors, (3723), 2919 states have internal predecessors, (3723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:33,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 3723 transitions. [2024-10-12 15:11:33,865 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 3723 transitions. Word has length 167 [2024-10-12 15:11:33,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:11:33,866 INFO L471 AbstractCegarLoop]: Abstraction has 2920 states and 3723 transitions. [2024-10-12 15:11:33,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:33,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 3723 transitions. [2024-10-12 15:11:33,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-12 15:11:33,869 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:11:33,869 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:11:33,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-10-12 15:11:34,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-12 15:11:34,070 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:11:34,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:11:34,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1469616258, now seen corresponding path program 1 times [2024-10-12 15:11:34,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:11:34,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099251971] [2024-10-12 15:11:34,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:34,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:11:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 0 proven. 653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:11:34,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:11:34,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099251971] [2024-10-12 15:11:34,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099251971] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:11:34,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376205703] [2024-10-12 15:11:34,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:34,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:11:34,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:11:34,329 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:11:34,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-12 15:11:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:34,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 15:11:34,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:11:34,698 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 51 proven. 11 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2024-10-12 15:11:34,698 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 15:11:34,981 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 51 proven. 11 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2024-10-12 15:11:34,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376205703] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 15:11:34,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 15:11:34,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 20 [2024-10-12 15:11:34,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796735521] [2024-10-12 15:11:34,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 15:11:34,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-12 15:11:34,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:11:34,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-12 15:11:34,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-10-12 15:11:34,983 INFO L87 Difference]: Start difference. First operand 2920 states and 3723 transitions. Second operand has 20 states, 20 states have (on average 12.15) internal successors, (243), 20 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:37,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:11:37,696 INFO L93 Difference]: Finished difference Result 6132 states and 7914 transitions. [2024-10-12 15:11:37,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-10-12 15:11:37,697 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 12.15) internal successors, (243), 20 states have internal predecessors, (243), 0 states have call successors, (0), 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 168 [2024-10-12 15:11:37,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:11:37,702 INFO L225 Difference]: With dead ends: 6132 [2024-10-12 15:11:37,702 INFO L226 Difference]: Without dead ends: 5626 [2024-10-12 15:11:37,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=532, Invalid=4298, Unknown=0, NotChecked=0, Total=4830 [2024-10-12 15:11:37,704 INFO L432 NwaCegarLoop]: 476 mSDtfsCounter, 1308 mSDsluCounter, 6471 mSDsCounter, 0 mSdLazyCounter, 3633 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 6947 SdHoareTripleChecker+Invalid, 3659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-12 15:11:37,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 6947 Invalid, 3659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3633 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-12 15:11:37,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5626 states. [2024-10-12 15:11:37,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5626 to 3106. [2024-10-12 15:11:37,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3106 states, 3105 states have (on average 1.2711755233494364) internal successors, (3947), 3105 states have internal predecessors, (3947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:37,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 3947 transitions. [2024-10-12 15:11:37,743 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 3947 transitions. Word has length 168 [2024-10-12 15:11:37,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:11:37,744 INFO L471 AbstractCegarLoop]: Abstraction has 3106 states and 3947 transitions. [2024-10-12 15:11:37,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.15) internal successors, (243), 20 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:11:37,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 3947 transitions. [2024-10-12 15:11:37,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-10-12 15:11:37,747 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:11:37,747 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:11:37,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-10-12 15:11:37,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-12 15:11:37,948 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:11:37,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:11:37,949 INFO L85 PathProgramCache]: Analyzing trace with hash -297481807, now seen corresponding path program 1 times [2024-10-12 15:11:37,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:11:37,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697832428] [2024-10-12 15:11:37,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:37,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:11:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:38,289 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:11:38,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:11:38,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697832428] [2024-10-12 15:11:38,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697832428] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:11:38,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362153841] [2024-10-12 15:11:38,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:11:38,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:11:38,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:11:38,291 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:11:38,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-12 15:11:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:11:38,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 15:11:38,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:11:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2024-10-12 15:11:38,415 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:11:38,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362153841] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:11:38,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:11:38,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 17 [2024-10-12 15:11:38,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15588042] [2024-10-12 15:11:38,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:11:38,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:11:38,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:11:38,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:11:38,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-10-12 15:11:38,416 INFO L87 Difference]: Start difference. First operand 3106 states and 3947 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)