./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-52.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-52.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 9596c2b1f5a6a86d977a7da5a7a12c7a349c8346134fffef1cb814ea5153401b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 20:13:15,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 20:13:16,009 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 20:13:16,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 20:13:16,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 20:13:16,051 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 20:13:16,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 20:13:16,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 20:13:16,053 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 20:13:16,053 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 20:13:16,053 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 20:13:16,054 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 20:13:16,055 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 20:13:16,055 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 20:13:16,055 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 20:13:16,056 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 20:13:16,056 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 20:13:16,056 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 20:13:16,057 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 20:13:16,057 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 20:13:16,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 20:13:16,061 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 20:13:16,062 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 20:13:16,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 20:13:16,062 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 20:13:16,062 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 20:13:16,063 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 20:13:16,063 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 20:13:16,063 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 20:13:16,064 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 20:13:16,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 20:13:16,064 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 20:13:16,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:13:16,065 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 20:13:16,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 20:13:16,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 20:13:16,068 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 20:13:16,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 20:13:16,069 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 20:13:16,069 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 20:13:16,070 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 20:13:16,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 20:13:16,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9596c2b1f5a6a86d977a7da5a7a12c7a349c8346134fffef1cb814ea5153401b [2024-11-18 20:13:16,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 20:13:16,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 20:13:16,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 20:13:16,401 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 20:13:16,402 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 20:13:16,404 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-52.i [2024-11-18 20:13:17,923 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 20:13:18,144 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 20:13:18,146 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-52.i [2024-11-18 20:13:18,159 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50ede7bad/27e3c1e22ce1485f9f3fed267383fef2/FLAG9acab5c6e [2024-11-18 20:13:18,175 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50ede7bad/27e3c1e22ce1485f9f3fed267383fef2 [2024-11-18 20:13:18,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 20:13:18,179 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 20:13:18,181 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 20:13:18,181 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 20:13:18,185 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 20:13:18,186 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:13:18" (1/1) ... [2024-11-18 20:13:18,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a93d464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:18, skipping insertion in model container [2024-11-18 20:13:18,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:13:18" (1/1) ... [2024-11-18 20:13:18,223 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 20:13:18,396 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-52.i[919,932] [2024-11-18 20:13:18,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:13:18,513 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 20:13:18,528 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-52.i[919,932] [2024-11-18 20:13:18,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:13:18,592 INFO L204 MainTranslator]: Completed translation [2024-11-18 20:13:18,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:18 WrapperNode [2024-11-18 20:13:18,593 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 20:13:18,594 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 20:13:18,595 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 20:13:18,595 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 20:13:18,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:18" (1/1) ... [2024-11-18 20:13:18,617 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:18" (1/1) ... [2024-11-18 20:13:18,658 INFO L138 Inliner]: procedures = 26, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 193 [2024-11-18 20:13:18,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 20:13:18,659 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 20:13:18,659 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 20:13:18,660 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 20:13:18,679 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:18" (1/1) ... [2024-11-18 20:13:18,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:18" (1/1) ... [2024-11-18 20:13:18,683 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:18" (1/1) ... [2024-11-18 20:13:18,710 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]. [2024-11-18 20:13:18,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:18" (1/1) ... [2024-11-18 20:13:18,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:18" (1/1) ... [2024-11-18 20:13:18,720 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:18" (1/1) ... [2024-11-18 20:13:18,729 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:18" (1/1) ... [2024-11-18 20:13:18,733 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:18" (1/1) ... [2024-11-18 20:13:18,740 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:18" (1/1) ... [2024-11-18 20:13:18,751 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 20:13:18,752 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 20:13:18,752 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 20:13:18,753 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 20:13:18,754 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:18" (1/1) ... [2024-11-18 20:13:18,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:13:18,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:13:18,792 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) [2024-11-18 20:13:18,794 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 [2024-11-18 20:13:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 20:13:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 20:13:18,834 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 20:13:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 20:13:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 20:13:18,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 20:13:18,911 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 20:13:18,913 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 20:13:19,428 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-18 20:13:19,429 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 20:13:19,443 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 20:13:19,444 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 20:13:19,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:13:19 BoogieIcfgContainer [2024-11-18 20:13:19,444 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 20:13:19,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 20:13:19,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 20:13:19,452 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 20:13:19,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:13:18" (1/3) ... [2024-11-18 20:13:19,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b3c4ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:13:19, skipping insertion in model container [2024-11-18 20:13:19,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:18" (2/3) ... [2024-11-18 20:13:19,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b3c4ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:13:19, skipping insertion in model container [2024-11-18 20:13:19,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:13:19" (3/3) ... [2024-11-18 20:13:19,457 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-52.i [2024-11-18 20:13:19,476 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 20:13:19,476 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 20:13:19,541 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 20:13:19,548 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;@70666559, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 20:13:19,548 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 20:13:19,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 61 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-18 20:13:19,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-18 20:13:19,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:13:19,567 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:13:19,568 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:13:19,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:13:19,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1443516207, now seen corresponding path program 1 times [2024-11-18 20:13:19,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:13:19,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719817427] [2024-11-18 20:13:19,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:13:19,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:13:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:13:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-18 20:13:19,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:13:19,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719817427] [2024-11-18 20:13:19,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719817427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:13:19,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014187260] [2024-11-18 20:13:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:13:19,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:13:19,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:13:19,969 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) [2024-11-18 20:13:19,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 20:13:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:13:20,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 20:13:20,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:13:20,188 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-18 20:13:20,192 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 20:13:20,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014187260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:13:20,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 20:13:20,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 20:13:20,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181291718] [2024-11-18 20:13:20,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:13:20,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 20:13:20,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:13:20,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 20:13:20,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:13:20,235 INFO L87 Difference]: Start difference. First operand has 80 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 61 states have internal predecessors, (89), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 20:13:20,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:13:20,267 INFO L93 Difference]: Finished difference Result 153 states and 257 transitions. [2024-11-18 20:13:20,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 20:13:20,270 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 125 [2024-11-18 20:13:20,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:13:20,277 INFO L225 Difference]: With dead ends: 153 [2024-11-18 20:13:20,277 INFO L226 Difference]: Without dead ends: 76 [2024-11-18 20:13:20,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:13:20,283 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 20:13:20,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 20:13:20,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-18 20:13:20,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-18 20:13:20,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 57 states have internal predecessors, (82), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-18 20:13:20,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 116 transitions. [2024-11-18 20:13:20,324 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 116 transitions. Word has length 125 [2024-11-18 20:13:20,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:13:20,325 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 116 transitions. [2024-11-18 20:13:20,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 20:13:20,325 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 116 transitions. [2024-11-18 20:13:20,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-18 20:13:20,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:13:20,329 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:13:20,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 20:13:20,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 20:13:20,530 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:13:20,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:13:20,531 INFO L85 PathProgramCache]: Analyzing trace with hash -973756265, now seen corresponding path program 1 times [2024-11-18 20:13:20,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:13:20,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061321274] [2024-11-18 20:13:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:13:20,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:13:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:13:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:13:20,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:13:20,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061321274] [2024-11-18 20:13:20,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061321274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:13:20,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:13:20,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:13:20,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705369601] [2024-11-18 20:13:20,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:13:20,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:13:20,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:13:20,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:13:20,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:13:20,951 INFO L87 Difference]: Start difference. First operand 76 states and 116 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:13:21,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:13:21,156 INFO L93 Difference]: Finished difference Result 149 states and 229 transitions. [2024-11-18 20:13:21,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 20:13:21,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 125 [2024-11-18 20:13:21,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:13:21,162 INFO L225 Difference]: With dead ends: 149 [2024-11-18 20:13:21,162 INFO L226 Difference]: Without dead ends: 76 [2024-11-18 20:13:21,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:13:21,164 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 146 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 20:13:21,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 174 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 20:13:21,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-18 20:13:21,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-18 20:13:21,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 57 states have internal predecessors, (81), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-18 20:13:21,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 115 transitions. [2024-11-18 20:13:21,179 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 115 transitions. Word has length 125 [2024-11-18 20:13:21,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:13:21,180 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 115 transitions. [2024-11-18 20:13:21,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:13:21,181 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 115 transitions. [2024-11-18 20:13:21,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-18 20:13:21,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:13:21,183 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:13:21,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 20:13:21,183 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:13:21,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:13:21,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1114304875, now seen corresponding path program 1 times [2024-11-18 20:13:21,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:13:21,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147969403] [2024-11-18 20:13:21,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:13:21,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:13:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:13:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:13:21,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:13:21,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147969403] [2024-11-18 20:13:21,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147969403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:13:21,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:13:21,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 20:13:21,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097176213] [2024-11-18 20:13:21,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:13:21,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 20:13:21,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:13:21,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 20:13:21,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 20:13:21,532 INFO L87 Difference]: Start difference. First operand 76 states and 115 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:13:21,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:13:21,749 INFO L93 Difference]: Finished difference Result 272 states and 412 transitions. [2024-11-18 20:13:21,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 20:13:21,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 125 [2024-11-18 20:13:21,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:13:21,753 INFO L225 Difference]: With dead ends: 272 [2024-11-18 20:13:21,756 INFO L226 Difference]: Without dead ends: 199 [2024-11-18 20:13:21,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 20:13:21,760 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 157 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 20:13:21,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 280 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 20:13:21,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-18 20:13:21,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 147. [2024-11-18 20:13:21,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 110 states have (on average 1.4181818181818182) internal successors, (156), 110 states have internal predecessors, (156), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 20:13:21,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 224 transitions. [2024-11-18 20:13:21,803 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 224 transitions. Word has length 125 [2024-11-18 20:13:21,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:13:21,804 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 224 transitions. [2024-11-18 20:13:21,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:13:21,805 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 224 transitions. [2024-11-18 20:13:21,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-18 20:13:21,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:13:21,810 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:13:21,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 20:13:21,811 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:13:21,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:13:21,811 INFO L85 PathProgramCache]: Analyzing trace with hash 977135812, now seen corresponding path program 1 times [2024-11-18 20:13:21,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:13:21,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271801717] [2024-11-18 20:13:21,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:13:21,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:13:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:13:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:13:22,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:13:22,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271801717] [2024-11-18 20:13:22,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271801717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:13:22,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:13:22,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:13:22,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676514815] [2024-11-18 20:13:22,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:13:22,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:13:22,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:13:22,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:13:22,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:13:22,035 INFO L87 Difference]: Start difference. First operand 147 states and 224 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:13:22,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:13:22,233 INFO L93 Difference]: Finished difference Result 468 states and 713 transitions. [2024-11-18 20:13:22,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 20:13:22,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 126 [2024-11-18 20:13:22,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:13:22,240 INFO L225 Difference]: With dead ends: 468 [2024-11-18 20:13:22,242 INFO L226 Difference]: Without dead ends: 324 [2024-11-18 20:13:22,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 20:13:22,244 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 246 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:13:22,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 415 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:13:22,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-18 20:13:22,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 285. [2024-11-18 20:13:22,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 212 states have (on average 1.4056603773584906) internal successors, (298), 212 states have internal predecessors, (298), 68 states have call successors, (68), 4 states have call predecessors, (68), 4 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 20:13:22,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 434 transitions. [2024-11-18 20:13:22,299 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 434 transitions. Word has length 126 [2024-11-18 20:13:22,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:13:22,299 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 434 transitions. [2024-11-18 20:13:22,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:13:22,300 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 434 transitions. [2024-11-18 20:13:22,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-18 20:13:22,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:13:22,302 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:13:22,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 20:13:22,302 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:13:22,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:13:22,303 INFO L85 PathProgramCache]: Analyzing trace with hash -394342872, now seen corresponding path program 1 times [2024-11-18 20:13:22,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:13:22,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124209509] [2024-11-18 20:13:22,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:13:22,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:13:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:13:22,405 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:13:22,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:13:22,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124209509] [2024-11-18 20:13:22,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124209509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:13:22,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:13:22,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 20:13:22,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826080574] [2024-11-18 20:13:22,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:13:22,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 20:13:22,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:13:22,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 20:13:22,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 20:13:22,407 INFO L87 Difference]: Start difference. First operand 285 states and 434 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:13:22,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:13:22,497 INFO L93 Difference]: Finished difference Result 761 states and 1150 transitions. [2024-11-18 20:13:22,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 20:13:22,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 126 [2024-11-18 20:13:22,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:13:22,505 INFO L225 Difference]: With dead ends: 761 [2024-11-18 20:13:22,506 INFO L226 Difference]: Without dead ends: 479 [2024-11-18 20:13:22,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 20:13:22,511 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 71 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 20:13:22,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 205 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 20:13:22,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-11-18 20:13:22,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 297. [2024-11-18 20:13:22,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 224 states have (on average 1.3928571428571428) internal successors, (312), 224 states have internal predecessors, (312), 68 states have call successors, (68), 4 states have call predecessors, (68), 4 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 20:13:22,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 448 transitions. [2024-11-18 20:13:22,562 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 448 transitions. Word has length 126 [2024-11-18 20:13:22,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:13:22,563 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 448 transitions. [2024-11-18 20:13:22,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:13:22,563 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 448 transitions. [2024-11-18 20:13:22,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-18 20:13:22,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:13:22,565 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:13:22,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 20:13:22,565 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:13:22,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:13:22,566 INFO L85 PathProgramCache]: Analyzing trace with hash -828302522, now seen corresponding path program 1 times [2024-11-18 20:13:22,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:13:22,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957300046] [2024-11-18 20:13:22,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:13:22,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:13:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:13:22,814 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:13:22,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:13:22,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957300046] [2024-11-18 20:13:22,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957300046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:13:22,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:13:22,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 20:13:22,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687147142] [2024-11-18 20:13:22,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:13:22,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 20:13:22,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:13:22,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 20:13:22,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 20:13:22,819 INFO L87 Difference]: Start difference. First operand 297 states and 448 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:13:23,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:13:23,017 INFO L93 Difference]: Finished difference Result 625 states and 943 transitions. [2024-11-18 20:13:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 20:13:23,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 126 [2024-11-18 20:13:23,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:13:23,021 INFO L225 Difference]: With dead ends: 625 [2024-11-18 20:13:23,021 INFO L226 Difference]: Without dead ends: 331 [2024-11-18 20:13:23,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:13:23,024 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 174 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:13:23,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 343 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:13:23,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-18 20:13:23,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 163. [2024-11-18 20:13:23,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 126 states have (on average 1.3888888888888888) internal successors, (175), 126 states have internal predecessors, (175), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 20:13:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 243 transitions. [2024-11-18 20:13:23,061 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 243 transitions. Word has length 126 [2024-11-18 20:13:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:13:23,062 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 243 transitions. [2024-11-18 20:13:23,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:13:23,063 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 243 transitions. [2024-11-18 20:13:23,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-18 20:13:23,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:13:23,065 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:13:23,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 20:13:23,066 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:13:23,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:13:23,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1809263044, now seen corresponding path program 1 times [2024-11-18 20:13:23,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:13:23,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985869931] [2024-11-18 20:13:23,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:13:23,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:13:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:13:23,157 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:13:23,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:13:23,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985869931] [2024-11-18 20:13:23,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985869931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:13:23,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:13:23,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 20:13:23,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616269355] [2024-11-18 20:13:23,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:13:23,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 20:13:23,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:13:23,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 20:13:23,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 20:13:23,159 INFO L87 Difference]: Start difference. First operand 163 states and 243 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:13:23,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:13:23,236 INFO L93 Difference]: Finished difference Result 471 states and 703 transitions. [2024-11-18 20:13:23,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 20:13:23,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 126 [2024-11-18 20:13:23,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:13:23,239 INFO L225 Difference]: With dead ends: 471 [2024-11-18 20:13:23,239 INFO L226 Difference]: Without dead ends: 311 [2024-11-18 20:13:23,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 20:13:23,241 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 97 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 20:13:23,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 312 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 20:13:23,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-18 20:13:23,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 175. [2024-11-18 20:13:23,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 138 states have (on average 1.3840579710144927) internal successors, (191), 138 states have internal predecessors, (191), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 20:13:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 259 transitions. [2024-11-18 20:13:23,283 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 259 transitions. Word has length 126 [2024-11-18 20:13:23,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:13:23,284 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 259 transitions. [2024-11-18 20:13:23,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:13:23,285 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 259 transitions. [2024-11-18 20:13:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-18 20:13:23,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:13:23,289 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:13:23,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 20:13:23,289 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:13:23,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:13:23,291 INFO L85 PathProgramCache]: Analyzing trace with hash 3824710, now seen corresponding path program 1 times [2024-11-18 20:13:23,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:13:23,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311085800] [2024-11-18 20:13:23,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:13:23,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:13:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:13:23,970 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:13:23,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:13:23,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311085800] [2024-11-18 20:13:23,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311085800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:13:23,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:13:23,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:13:23,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781224246] [2024-11-18 20:13:23,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:13:23,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:13:23,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:13:23,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:13:23,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:13:23,973 INFO L87 Difference]: Start difference. First operand 175 states and 259 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:13:24,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:13:24,152 INFO L93 Difference]: Finished difference Result 451 states and 659 transitions. [2024-11-18 20:13:24,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:13:24,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 126 [2024-11-18 20:13:24,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:13:24,155 INFO L225 Difference]: With dead ends: 451 [2024-11-18 20:13:24,155 INFO L226 Difference]: Without dead ends: 279 [2024-11-18 20:13:24,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:13:24,156 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 151 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:13:24,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 278 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:13:24,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-18 20:13:24,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 214. [2024-11-18 20:13:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 175 states have (on average 1.3657142857142857) internal successors, (239), 175 states have internal predecessors, (239), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 20:13:24,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 307 transitions. [2024-11-18 20:13:24,185 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 307 transitions. Word has length 126 [2024-11-18 20:13:24,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:13:24,186 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 307 transitions. [2024-11-18 20:13:24,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:13:24,186 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 307 transitions. [2024-11-18 20:13:24,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-18 20:13:24,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:13:24,187 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:13:24,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 20:13:24,188 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:13:24,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:13:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1383106450, now seen corresponding path program 1 times [2024-11-18 20:13:24,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:13:24,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252787819] [2024-11-18 20:13:24,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:13:24,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:13:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:13:24,713 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:13:24,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:13:24,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252787819] [2024-11-18 20:13:24,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252787819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:13:24,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:13:24,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 20:13:24,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377851459] [2024-11-18 20:13:24,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:13:24,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 20:13:24,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:13:24,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 20:13:24,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 20:13:24,718 INFO L87 Difference]: Start difference. First operand 214 states and 307 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 20:13:25,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:13:25,113 INFO L93 Difference]: Finished difference Result 546 states and 784 transitions. [2024-11-18 20:13:25,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:13:25,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 127 [2024-11-18 20:13:25,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:13:25,116 INFO L225 Difference]: With dead ends: 546 [2024-11-18 20:13:25,116 INFO L226 Difference]: Without dead ends: 335 [2024-11-18 20:13:25,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-18 20:13:25,120 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 261 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 20:13:25,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 498 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 20:13:25,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-18 20:13:25,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 305. [2024-11-18 20:13:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 247 states have (on average 1.3441295546558705) internal successors, (332), 247 states have internal predecessors, (332), 51 states have call successors, (51), 6 states have call predecessors, (51), 6 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-18 20:13:25,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 434 transitions. [2024-11-18 20:13:25,174 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 434 transitions. Word has length 127 [2024-11-18 20:13:25,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:13:25,174 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 434 transitions. [2024-11-18 20:13:25,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 20:13:25,175 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 434 transitions. [2024-11-18 20:13:25,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-18 20:13:25,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:13:25,176 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:13:25,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 20:13:25,177 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:13:25,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:13:25,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1973459684, now seen corresponding path program 1 times [2024-11-18 20:13:25,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:13:25,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242422010] [2024-11-18 20:13:25,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:13:25,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:13:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:13:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:13:25,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:13:25,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242422010] [2024-11-18 20:13:25,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242422010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:13:25,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:13:25,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:13:25,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917614004] [2024-11-18 20:13:25,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:13:25,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:13:25,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:13:25,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:13:25,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:13:25,551 INFO L87 Difference]: Start difference. First operand 305 states and 434 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:13:25,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:13:25,851 INFO L93 Difference]: Finished difference Result 648 states and 923 transitions. [2024-11-18 20:13:25,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 20:13:25,852 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), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 128 [2024-11-18 20:13:25,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:13:25,855 INFO L225 Difference]: With dead ends: 648 [2024-11-18 20:13:25,855 INFO L226 Difference]: Without dead ends: 437 [2024-11-18 20:13:25,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 20:13:25,857 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 156 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 20:13:25,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 365 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 20:13:25,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-11-18 20:13:25,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 433. [2024-11-18 20:13:25,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 355 states have (on average 1.3492957746478873) internal successors, (479), 357 states have internal predecessors, (479), 67 states have call successors, (67), 10 states have call predecessors, (67), 10 states have return successors, (67), 65 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-18 20:13:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 613 transitions. [2024-11-18 20:13:25,922 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 613 transitions. Word has length 128 [2024-11-18 20:13:25,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:13:25,923 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 613 transitions. [2024-11-18 20:13:25,923 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), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 20:13:25,923 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 613 transitions. [2024-11-18 20:13:25,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-18 20:13:25,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:13:25,925 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:13:25,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 20:13:25,925 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:13:25,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:13:25,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1615923296, now seen corresponding path program 1 times [2024-11-18 20:13:25,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:13:25,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955688324] [2024-11-18 20:13:25,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:13:25,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:13:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:13:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:13:27,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:13:27,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955688324] [2024-11-18 20:13:27,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955688324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:13:27,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:13:27,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-18 20:13:27,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248127690] [2024-11-18 20:13:27,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:13:27,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 20:13:27,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:13:27,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 20:13:27,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-18 20:13:27,742 INFO L87 Difference]: Start difference. First operand 433 states and 613 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 20:13:29,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:13:29,715 INFO L93 Difference]: Finished difference Result 1425 states and 2024 transitions. [2024-11-18 20:13:29,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 20:13:29,716 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 128 [2024-11-18 20:13:29,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:13:29,728 INFO L225 Difference]: With dead ends: 1425 [2024-11-18 20:13:29,728 INFO L226 Difference]: Without dead ends: 1104 [2024-11-18 20:13:29,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=194, Invalid=456, Unknown=0, NotChecked=0, Total=650 [2024-11-18 20:13:29,731 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 615 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:13:29,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 694 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 20:13:29,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2024-11-18 20:13:29,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 960. [2024-11-18 20:13:29,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 803 states have (on average 1.3623910336239102) internal successors, (1094), 811 states have internal predecessors, (1094), 133 states have call successors, (133), 23 states have call predecessors, (133), 23 states have return successors, (133), 125 states have call predecessors, (133), 133 states have call successors, (133) [2024-11-18 20:13:29,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1360 transitions. [2024-11-18 20:13:29,872 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1360 transitions. Word has length 128 [2024-11-18 20:13:29,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:13:29,873 INFO L471 AbstractCegarLoop]: Abstraction has 960 states and 1360 transitions. [2024-11-18 20:13:29,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 20:13:29,873 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1360 transitions. [2024-11-18 20:13:29,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-18 20:13:29,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:13:29,875 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:13:29,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 20:13:29,875 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:13:29,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:13:29,876 INFO L85 PathProgramCache]: Analyzing trace with hash 159084066, now seen corresponding path program 1 times [2024-11-18 20:13:29,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:13:29,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046007012] [2024-11-18 20:13:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:13:29,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:13:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:13:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:13:30,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:13:30,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046007012] [2024-11-18 20:13:30,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046007012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:13:30,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:13:30,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 20:13:30,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003933383] [2024-11-18 20:13:30,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:13:30,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 20:13:30,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:13:30,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 20:13:30,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-18 20:13:30,603 INFO L87 Difference]: Start difference. First operand 960 states and 1360 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 20:13:31,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:13:31,931 INFO L93 Difference]: Finished difference Result 1694 states and 2403 transitions. [2024-11-18 20:13:31,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 20:13:31,932 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 128 [2024-11-18 20:13:31,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:13:31,939 INFO L225 Difference]: With dead ends: 1694 [2024-11-18 20:13:31,940 INFO L226 Difference]: Without dead ends: 1241 [2024-11-18 20:13:31,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2024-11-18 20:13:31,942 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 343 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 20:13:31,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 1128 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 20:13:31,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2024-11-18 20:13:32,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 956. [2024-11-18 20:13:32,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 799 states have (on average 1.3591989987484356) internal successors, (1086), 807 states have internal predecessors, (1086), 133 states have call successors, (133), 23 states have call predecessors, (133), 23 states have return successors, (133), 125 states have call predecessors, (133), 133 states have call successors, (133) [2024-11-18 20:13:32,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1352 transitions. [2024-11-18 20:13:32,081 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1352 transitions. Word has length 128 [2024-11-18 20:13:32,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:13:32,082 INFO L471 AbstractCegarLoop]: Abstraction has 956 states and 1352 transitions. [2024-11-18 20:13:32,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 20:13:32,082 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1352 transitions. [2024-11-18 20:13:32,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 20:13:32,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:13:32,084 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:13:32,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 20:13:32,084 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:13:32,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:13:32,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1058659075, now seen corresponding path program 1 times [2024-11-18 20:13:32,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:13:32,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932173403] [2024-11-18 20:13:32,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:13:32,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:13:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:13:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:13:35,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:13:35,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932173403] [2024-11-18 20:13:35,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932173403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:13:35,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:13:35,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 20:13:35,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793563746] [2024-11-18 20:13:35,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:13:35,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 20:13:35,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:13:35,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 20:13:35,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-18 20:13:35,521 INFO L87 Difference]: Start difference. First operand 956 states and 1352 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 20:13:37,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:13:37,447 INFO L93 Difference]: Finished difference Result 1898 states and 2691 transitions. [2024-11-18 20:13:37,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 20:13:37,448 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 129 [2024-11-18 20:13:37,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:13:37,454 INFO L225 Difference]: With dead ends: 1898 [2024-11-18 20:13:37,454 INFO L226 Difference]: Without dead ends: 1104 [2024-11-18 20:13:37,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2024-11-18 20:13:37,458 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 471 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 20:13:37,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 624 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 20:13:37,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2024-11-18 20:13:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 960. [2024-11-18 20:13:37,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 803 states have (on average 1.3599003735990038) internal successors, (1092), 811 states have internal predecessors, (1092), 133 states have call successors, (133), 23 states have call predecessors, (133), 23 states have return successors, (133), 125 states have call predecessors, (133), 133 states have call successors, (133) [2024-11-18 20:13:37,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1358 transitions. [2024-11-18 20:13:37,589 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1358 transitions. Word has length 129 [2024-11-18 20:13:37,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:13:37,590 INFO L471 AbstractCegarLoop]: Abstraction has 960 states and 1358 transitions. [2024-11-18 20:13:37,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 20:13:37,590 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1358 transitions. [2024-11-18 20:13:37,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 20:13:37,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:13:37,592 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:13:37,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 20:13:37,592 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:13:37,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:13:37,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2079727429, now seen corresponding path program 1 times [2024-11-18 20:13:37,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:13:37,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107585878] [2024-11-18 20:13:37,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:13:37,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:13:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:13:40,145 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-18 20:13:40,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:13:40,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107585878] [2024-11-18 20:13:40,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107585878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:13:40,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:13:40,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 20:13:40,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756033541] [2024-11-18 20:13:40,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:13:40,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 20:13:40,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:13:40,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 20:13:40,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-18 20:13:40,148 INFO L87 Difference]: Start difference. First operand 960 states and 1358 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 20:13:42,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:13:42,289 INFO L93 Difference]: Finished difference Result 1964 states and 2778 transitions. [2024-11-18 20:13:42,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 20:13:42,290 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 129 [2024-11-18 20:13:42,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:13:42,295 INFO L225 Difference]: With dead ends: 1964 [2024-11-18 20:13:42,296 INFO L226 Difference]: Without dead ends: 1168 [2024-11-18 20:13:42,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2024-11-18 20:13:42,299 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 528 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 20:13:42,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 657 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 20:13:42,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-11-18 20:13:42,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 967. [2024-11-18 20:13:42,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 810 states have (on average 1.3604938271604938) internal successors, (1102), 818 states have internal predecessors, (1102), 133 states have call successors, (133), 23 states have call predecessors, (133), 23 states have return successors, (133), 125 states have call predecessors, (133), 133 states have call successors, (133) [2024-11-18 20:13:42,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1368 transitions. [2024-11-18 20:13:42,408 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1368 transitions. Word has length 129 [2024-11-18 20:13:42,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:13:42,408 INFO L471 AbstractCegarLoop]: Abstraction has 967 states and 1368 transitions. [2024-11-18 20:13:42,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 20:13:42,409 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1368 transitions. [2024-11-18 20:13:42,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 20:13:42,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:13:42,411 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:13:42,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 20:13:42,411 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:13:42,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:13:42,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1566375867, now seen corresponding path program 1 times [2024-11-18 20:13:42,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:13:42,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227091572] [2024-11-18 20:13:42,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:13:42,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:13:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat