./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-66.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-pr-co_file-66.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 fc772c7bbac1de5fe64d64c143c1154d0fb749c01b6a27196c7210715a9fc32d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 21:09:51,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 21:09:51,427 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 21:09:51,435 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 21:09:51,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 21:09:51,454 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 21:09:51,455 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 21:09:51,455 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 21:09:51,455 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 21:09:51,455 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 21:09:51,456 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 21:09:51,456 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 21:09:51,456 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 21:09:51,457 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 21:09:51,457 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 21:09:51,457 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 21:09:51,457 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 21:09:51,458 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 21:09:51,458 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 21:09:51,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 21:09:51,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 21:09:51,462 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 21:09:51,462 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 21:09:51,462 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 21:09:51,463 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 21:09:51,463 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 21:09:51,463 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 21:09:51,463 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 21:09:51,463 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 21:09:51,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 21:09:51,464 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 21:09:51,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 21:09:51,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:09:51,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 21:09:51,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 21:09:51,464 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 21:09:51,464 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 21:09:51,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 21:09:51,465 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 21:09:51,465 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 21:09:51,465 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 21:09:51,466 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 21:09:51,466 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc772c7bbac1de5fe64d64c143c1154d0fb749c01b6a27196c7210715a9fc32d [2024-11-18 21:09:51,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 21:09:51,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 21:09:51,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 21:09:51,705 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 21:09:51,705 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 21:09:51,706 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-66.i [2024-11-18 21:09:52,940 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 21:09:53,101 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 21:09:53,102 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-66.i [2024-11-18 21:09:53,110 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f53f69fc7/f1b19fcfd45341528444f141a556dc49/FLAG426f05e1f [2024-11-18 21:09:53,497 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f53f69fc7/f1b19fcfd45341528444f141a556dc49 [2024-11-18 21:09:53,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 21:09:53,502 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 21:09:53,503 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 21:09:53,503 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 21:09:53,507 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 21:09:53,507 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:53" (1/1) ... [2024-11-18 21:09:53,508 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ab2eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:53, skipping insertion in model container [2024-11-18 21:09:53,508 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:53" (1/1) ... [2024-11-18 21:09:53,531 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 21:09:53,720 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-pr-co_file-66.i[919,932] [2024-11-18 21:09:53,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:09:53,790 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 21:09:53,799 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-pr-co_file-66.i[919,932] [2024-11-18 21:09:53,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:09:53,842 INFO L204 MainTranslator]: Completed translation [2024-11-18 21:09:53,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:53 WrapperNode [2024-11-18 21:09:53,843 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 21:09:53,844 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 21:09:53,845 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 21:09:53,845 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 21:09:53,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:53" (1/1) ... [2024-11-18 21:09:53,859 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:53" (1/1) ... [2024-11-18 21:09:53,893 INFO L138 Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 186 [2024-11-18 21:09:53,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 21:09:53,894 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 21:09:53,894 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 21:09:53,894 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 21:09:53,902 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:53" (1/1) ... [2024-11-18 21:09:53,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:53" (1/1) ... [2024-11-18 21:09:53,906 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:53" (1/1) ... [2024-11-18 21:09:53,924 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 21:09:53,925 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:53" (1/1) ... [2024-11-18 21:09:53,926 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:53" (1/1) ... [2024-11-18 21:09:53,932 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:53" (1/1) ... [2024-11-18 21:09:53,939 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:53" (1/1) ... [2024-11-18 21:09:53,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:53" (1/1) ... [2024-11-18 21:09:53,942 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:53" (1/1) ... [2024-11-18 21:09:53,945 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 21:09:53,946 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 21:09:53,946 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 21:09:53,946 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 21:09:53,947 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:53" (1/1) ... [2024-11-18 21:09:53,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:09:53,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:09:53,977 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 21:09:53,980 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 21:09:54,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 21:09:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 21:09:54,025 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 21:09:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 21:09:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 21:09:54,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 21:09:54,099 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 21:09:54,102 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 21:09:54,349 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-18 21:09:54,349 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 21:09:54,366 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 21:09:54,366 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 21:09:54,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:54 BoogieIcfgContainer [2024-11-18 21:09:54,367 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 21:09:54,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 21:09:54,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 21:09:54,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 21:09:54,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:09:53" (1/3) ... [2024-11-18 21:09:54,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617afaa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:54, skipping insertion in model container [2024-11-18 21:09:54,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:53" (2/3) ... [2024-11-18 21:09:54,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617afaa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:54, skipping insertion in model container [2024-11-18 21:09:54,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:54" (3/3) ... [2024-11-18 21:09:54,374 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-66.i [2024-11-18 21:09:54,387 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 21:09:54,387 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 21:09:54,436 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 21:09:54,441 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;@46880957, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 21:09:54,442 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 21:09:54,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 58 states have internal predecessors, (85), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 21:09:54,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 21:09:54,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:09:54,456 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:54,456 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:09:54,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:09:54,460 INFO L85 PathProgramCache]: Analyzing trace with hash 661058656, now seen corresponding path program 1 times [2024-11-18 21:09:54,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:09:54,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15579025] [2024-11-18 21:09:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:09:54,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:09:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:09:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-11-18 21:09:54,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:09:54,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15579025] [2024-11-18 21:09:54,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15579025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 21:09:54,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935479864] [2024-11-18 21:09:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:09:54,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:09:54,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:09:54,823 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 21:09:54,824 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 21:09:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:09:54,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 21:09:54,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:09:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-11-18 21:09:55,033 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 21:09:55,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935479864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:09:55,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 21:09:55,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 21:09:55,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954407523] [2024-11-18 21:09:55,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:09:55,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 21:09:55,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:09:55,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 21:09:55,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 21:09:55,063 INFO L87 Difference]: Start difference. First operand has 84 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 58 states have internal predecessors, (85), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-18 21:09:55,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:09:55,085 INFO L93 Difference]: Finished difference Result 159 states and 280 transitions. [2024-11-18 21:09:55,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 21:09:55,087 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) Word has length 160 [2024-11-18 21:09:55,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:09:55,095 INFO L225 Difference]: With dead ends: 159 [2024-11-18 21:09:55,095 INFO L226 Difference]: Without dead ends: 78 [2024-11-18 21:09:55,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 161 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 21:09:55,101 INFO L432 NwaCegarLoop]: 121 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, 121 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 21:09:55,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:09:55,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-18 21:09:55,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-18 21:09:55,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 52 states have internal predecessors, (73), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 21:09:55,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 121 transitions. [2024-11-18 21:09:55,137 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 121 transitions. Word has length 160 [2024-11-18 21:09:55,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:09:55,138 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 121 transitions. [2024-11-18 21:09:55,138 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-18 21:09:55,138 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 121 transitions. [2024-11-18 21:09:55,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 21:09:55,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:09:55,141 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:55,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 21:09:55,342 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 21:09:55,342 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:09:55,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:09:55,343 INFO L85 PathProgramCache]: Analyzing trace with hash 254920988, now seen corresponding path program 1 times [2024-11-18 21:09:55,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:09:55,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741051755] [2024-11-18 21:09:55,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:09:55,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:09:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:09:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 21:09:57,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:09:57,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741051755] [2024-11-18 21:09:57,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741051755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:09:57,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:09:57,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 21:09:57,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49862489] [2024-11-18 21:09:57,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:09:57,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 21:09:57,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:09:57,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 21:09:57,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-18 21:09:57,125 INFO L87 Difference]: Start difference. First operand 78 states and 121 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 4 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-18 21:09:57,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:09:57,894 INFO L93 Difference]: Finished difference Result 226 states and 336 transitions. [2024-11-18 21:09:57,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 21:09:57,894 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 4 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 160 [2024-11-18 21:09:57,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:09:57,896 INFO L225 Difference]: With dead ends: 226 [2024-11-18 21:09:57,897 INFO L226 Difference]: Without dead ends: 151 [2024-11-18 21:09:57,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2024-11-18 21:09:57,899 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 466 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 21:09:57,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 278 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 21:09:57,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-18 21:09:57,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 118. [2024-11-18 21:09:57,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 87 states have (on average 1.4252873563218391) internal successors, (124), 88 states have internal predecessors, (124), 26 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 21:09:57,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 176 transitions. [2024-11-18 21:09:57,928 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 176 transitions. Word has length 160 [2024-11-18 21:09:57,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:09:57,930 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 176 transitions. [2024-11-18 21:09:57,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 4 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-18 21:09:57,930 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 176 transitions. [2024-11-18 21:09:57,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 21:09:57,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:09:57,934 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:57,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 21:09:57,935 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:09:57,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:09:57,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2029928350, now seen corresponding path program 1 times [2024-11-18 21:09:57,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:09:57,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276015644] [2024-11-18 21:09:57,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:09:57,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:09:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:10:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 21:10:33,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:10:33,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276015644] [2024-11-18 21:10:33,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276015644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:10:33,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:10:33,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-18 21:10:33,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074492982] [2024-11-18 21:10:33,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:10:33,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 21:10:33,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:10:33,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 21:10:33,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-18 21:10:33,144 INFO L87 Difference]: Start difference. First operand 118 states and 176 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 21:10:34,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:10:34,642 INFO L93 Difference]: Finished difference Result 521 states and 765 transitions. [2024-11-18 21:10:34,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 21:10:34,645 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 160 [2024-11-18 21:10:34,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:10:34,652 INFO L225 Difference]: With dead ends: 521 [2024-11-18 21:10:34,654 INFO L226 Difference]: Without dead ends: 406 [2024-11-18 21:10:34,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2024-11-18 21:10:34,658 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 386 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:10:34,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 667 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 21:10:34,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-18 21:10:34,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 216. [2024-11-18 21:10:34,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 157 states have (on average 1.375796178343949) internal successors, (216), 158 states have internal predecessors, (216), 50 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-18 21:10:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 316 transitions. [2024-11-18 21:10:34,696 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 316 transitions. Word has length 160 [2024-11-18 21:10:34,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:10:34,697 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 316 transitions. [2024-11-18 21:10:34,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 21:10:34,697 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 316 transitions. [2024-11-18 21:10:34,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 21:10:34,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:10:34,699 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:34,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 21:10:34,699 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:10:34,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:10:34,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2031775392, now seen corresponding path program 1 times [2024-11-18 21:10:34,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:10:34,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24537957] [2024-11-18 21:10:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:10:34,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:10:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:10:40,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 21:10:40,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:10:40,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24537957] [2024-11-18 21:10:40,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24537957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:10:40,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:10:40,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-18 21:10:40,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619889694] [2024-11-18 21:10:40,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:10:40,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 21:10:40,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:10:40,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 21:10:40,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-11-18 21:10:40,979 INFO L87 Difference]: Start difference. First operand 216 states and 316 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 21:10:42,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:10:42,289 INFO L93 Difference]: Finished difference Result 337 states and 477 transitions. [2024-11-18 21:10:42,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-18 21:10:42,289 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 160 [2024-11-18 21:10:42,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:10:42,292 INFO L225 Difference]: With dead ends: 337 [2024-11-18 21:10:42,292 INFO L226 Difference]: Without dead ends: 335 [2024-11-18 21:10:42,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2024-11-18 21:10:42,294 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 296 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 21:10:42,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 709 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 21:10:42,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-18 21:10:42,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 220. [2024-11-18 21:10:42,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 161 states have (on average 1.3726708074534162) internal successors, (221), 162 states have internal predecessors, (221), 50 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-18 21:10:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 321 transitions. [2024-11-18 21:10:42,324 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 321 transitions. Word has length 160 [2024-11-18 21:10:42,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:10:42,328 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 321 transitions. [2024-11-18 21:10:42,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 21:10:42,328 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 321 transitions. [2024-11-18 21:10:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 21:10:42,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:10:42,330 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:42,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 21:10:42,331 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:10:42,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:10:42,331 INFO L85 PathProgramCache]: Analyzing trace with hash -3244450, now seen corresponding path program 1 times [2024-11-18 21:10:42,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:10:42,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633778700] [2024-11-18 21:10:42,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:10:42,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:10:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:10:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 21:10:42,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:10:42,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633778700] [2024-11-18 21:10:42,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633778700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:10:42,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:10:42,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 21:10:42,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699745836] [2024-11-18 21:10:42,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:10:42,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 21:10:42,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:10:42,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 21:10:42,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:10:42,651 INFO L87 Difference]: Start difference. First operand 220 states and 321 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-18 21:10:42,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:10:42,936 INFO L93 Difference]: Finished difference Result 396 states and 570 transitions. [2024-11-18 21:10:42,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 21:10:42,936 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 160 [2024-11-18 21:10:42,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:10:42,938 INFO L225 Difference]: With dead ends: 396 [2024-11-18 21:10:42,938 INFO L226 Difference]: Without dead ends: 281 [2024-11-18 21:10:42,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-18 21:10:42,939 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 352 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:10:42,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 232 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 21:10:42,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-18 21:10:42,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 225. [2024-11-18 21:10:42,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 166 states have (on average 1.3734939759036144) internal successors, (228), 167 states have internal predecessors, (228), 50 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-18 21:10:42,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 328 transitions. [2024-11-18 21:10:42,962 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 328 transitions. Word has length 160 [2024-11-18 21:10:42,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:10:42,962 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 328 transitions. [2024-11-18 21:10:42,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-18 21:10:42,962 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 328 transitions. [2024-11-18 21:10:42,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 21:10:42,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:10:42,964 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:42,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 21:10:42,964 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:10:42,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:10:42,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1771762912, now seen corresponding path program 1 times [2024-11-18 21:10:42,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:10:42,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883284923] [2024-11-18 21:10:42,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:10:42,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:10:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:10:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 21:10:47,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:10:47,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883284923] [2024-11-18 21:10:47,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883284923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:10:47,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:10:47,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-18 21:10:47,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034994532] [2024-11-18 21:10:47,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:10:47,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 21:10:47,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:10:47,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 21:10:47,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-18 21:10:47,424 INFO L87 Difference]: Start difference. First operand 225 states and 328 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 21:10:50,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:10:50,169 INFO L93 Difference]: Finished difference Result 375 states and 524 transitions. [2024-11-18 21:10:50,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 21:10:50,170 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 160 [2024-11-18 21:10:50,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:10:50,172 INFO L225 Difference]: With dead ends: 375 [2024-11-18 21:10:50,172 INFO L226 Difference]: Without dead ends: 373 [2024-11-18 21:10:50,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2024-11-18 21:10:50,173 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 313 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 21:10:50,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 755 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 21:10:50,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-18 21:10:50,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 225. [2024-11-18 21:10:50,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 166 states have (on average 1.3734939759036144) internal successors, (228), 167 states have internal predecessors, (228), 50 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-18 21:10:50,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 328 transitions. [2024-11-18 21:10:50,193 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 328 transitions. Word has length 160 [2024-11-18 21:10:50,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:10:50,194 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 328 transitions. [2024-11-18 21:10:50,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 21:10:50,194 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 328 transitions. [2024-11-18 21:10:50,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 21:10:50,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:10:50,195 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:50,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 21:10:50,196 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:10:50,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:10:50,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1773609954, now seen corresponding path program 1 times [2024-11-18 21:10:50,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:10:50,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109566238] [2024-11-18 21:10:50,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:10:50,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:10:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:10:54,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 21:10:54,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:10:54,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109566238] [2024-11-18 21:10:54,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109566238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:10:54,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:10:54,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-18 21:10:54,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475836123] [2024-11-18 21:10:54,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:10:54,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 21:10:54,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:10:54,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 21:10:54,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-18 21:10:54,702 INFO L87 Difference]: Start difference. First operand 225 states and 328 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 21:10:56,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:10:56,112 INFO L93 Difference]: Finished difference Result 373 states and 522 transitions. [2024-11-18 21:10:56,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 21:10:56,113 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 160 [2024-11-18 21:10:56,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:10:56,114 INFO L225 Difference]: With dead ends: 373 [2024-11-18 21:10:56,115 INFO L226 Difference]: Without dead ends: 371 [2024-11-18 21:10:56,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2024-11-18 21:10:56,116 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 293 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 21:10:56,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 838 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 21:10:56,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-18 21:10:56,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 225. [2024-11-18 21:10:56,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 166 states have (on average 1.3734939759036144) internal successors, (228), 167 states have internal predecessors, (228), 50 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-18 21:10:56,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 328 transitions. [2024-11-18 21:10:56,137 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 328 transitions. Word has length 160 [2024-11-18 21:10:56,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:10:56,138 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 328 transitions. [2024-11-18 21:10:56,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 21:10:56,138 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 328 transitions. [2024-11-18 21:10:56,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 21:10:56,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:10:56,139 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:56,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 21:10:56,140 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:10:56,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:10:56,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1008859996, now seen corresponding path program 1 times [2024-11-18 21:10:56,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:10:56,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504545862] [2024-11-18 21:10:56,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:10:56,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:10:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:10:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 21:10:56,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:10:56,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504545862] [2024-11-18 21:10:56,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504545862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:10:56,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:10:56,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 21:10:56,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301128905] [2024-11-18 21:10:56,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:10:56,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 21:10:56,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:10:56,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 21:10:56,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 21:10:56,184 INFO L87 Difference]: Start difference. First operand 225 states and 328 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 21:10:56,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:10:56,237 INFO L93 Difference]: Finished difference Result 467 states and 692 transitions. [2024-11-18 21:10:56,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 21:10:56,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 160 [2024-11-18 21:10:56,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:10:56,239 INFO L225 Difference]: With dead ends: 467 [2024-11-18 21:10:56,239 INFO L226 Difference]: Without dead ends: 347 [2024-11-18 21:10:56,240 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 21:10:56,240 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 102 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:10:56,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 316 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:10:56,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-18 21:10:56,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2024-11-18 21:10:56,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 256 states have (on average 1.33203125) internal successors, (341), 258 states have internal predecessors, (341), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-18 21:10:56,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 493 transitions. [2024-11-18 21:10:56,278 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 493 transitions. Word has length 160 [2024-11-18 21:10:56,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:10:56,278 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 493 transitions. [2024-11-18 21:10:56,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 21:10:56,278 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 493 transitions. [2024-11-18 21:10:56,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 21:10:56,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:10:56,280 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:56,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 21:10:56,280 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:10:56,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:10:56,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1709924574, now seen corresponding path program 1 times [2024-11-18 21:10:56,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:10:56,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157568341] [2024-11-18 21:10:56,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:10:56,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:10:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:10:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 21:10:57,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:10:57,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157568341] [2024-11-18 21:10:57,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157568341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:10:57,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:10:57,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 21:10:57,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281105342] [2024-11-18 21:10:57,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:10:57,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 21:10:57,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:10:57,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 21:10:57,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 21:10:57,688 INFO L87 Difference]: Start difference. First operand 345 states and 493 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-18 21:10:58,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:10:58,649 INFO L93 Difference]: Finished difference Result 828 states and 1151 transitions. [2024-11-18 21:10:58,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 21:10:58,650 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 160 [2024-11-18 21:10:58,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:10:58,652 INFO L225 Difference]: With dead ends: 828 [2024-11-18 21:10:58,652 INFO L226 Difference]: Without dead ends: 617 [2024-11-18 21:10:58,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-11-18 21:10:58,653 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 382 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 21:10:58,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 856 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 21:10:58,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-11-18 21:10:58,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 391. [2024-11-18 21:10:58,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 302 states have (on average 1.3708609271523178) internal successors, (414), 304 states have internal predecessors, (414), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-18 21:10:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 566 transitions. [2024-11-18 21:10:58,694 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 566 transitions. Word has length 160 [2024-11-18 21:10:58,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:10:58,695 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 566 transitions. [2024-11-18 21:10:58,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-18 21:10:58,695 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 566 transitions. [2024-11-18 21:10:58,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 21:10:58,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:10:58,696 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:58,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 21:10:58,696 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:10:58,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:10:58,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1451759136, now seen corresponding path program 1 times [2024-11-18 21:10:58,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:10:58,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294271921] [2024-11-18 21:10:58,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:10:58,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:10:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:10:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 21:10:58,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:10:58,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294271921] [2024-11-18 21:10:58,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294271921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:10:58,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:10:58,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 21:10:58,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251945212] [2024-11-18 21:10:58,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:10:58,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 21:10:58,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:10:58,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 21:10:58,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:10:58,766 INFO L87 Difference]: Start difference. First operand 391 states and 566 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, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 21:10:58,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:10:58,944 INFO L93 Difference]: Finished difference Result 784 states and 1109 transitions. [2024-11-18 21:10:58,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 21:10:58,945 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, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 160 [2024-11-18 21:10:58,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:10:58,947 INFO L225 Difference]: With dead ends: 784 [2024-11-18 21:10:58,948 INFO L226 Difference]: Without dead ends: 573 [2024-11-18 21:10:58,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:10:58,949 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 92 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:10:58,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 405 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 21:10:58,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-11-18 21:10:58,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 515. [2024-11-18 21:10:58,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 396 states have (on average 1.351010101010101) internal successors, (535), 399 states have internal predecessors, (535), 102 states have call successors, (102), 16 states have call predecessors, (102), 16 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-18 21:10:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 739 transitions. [2024-11-18 21:10:59,002 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 739 transitions. Word has length 160 [2024-11-18 21:10:59,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:10:59,002 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 739 transitions. [2024-11-18 21:10:59,002 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, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 21:10:59,002 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 739 transitions. [2024-11-18 21:10:59,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 21:10:59,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:10:59,005 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:59,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 21:10:59,005 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:10:59,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:10:59,005 INFO L85 PathProgramCache]: Analyzing trace with hash 340984608, now seen corresponding path program 1 times [2024-11-18 21:10:59,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:10:59,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539794193] [2024-11-18 21:10:59,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:10:59,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:10:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:10:59,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 21:10:59,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:10:59,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539794193] [2024-11-18 21:10:59,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539794193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:10:59,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:10:59,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 21:10:59,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645061530] [2024-11-18 21:10:59,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:10:59,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 21:10:59,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:10:59,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 21:10:59,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 21:10:59,408 INFO L87 Difference]: Start difference. First operand 515 states and 739 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-18 21:10:59,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:10:59,895 INFO L93 Difference]: Finished difference Result 1409 states and 1987 transitions. [2024-11-18 21:10:59,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 21:10:59,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 160 [2024-11-18 21:10:59,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:10:59,900 INFO L225 Difference]: With dead ends: 1409 [2024-11-18 21:10:59,900 INFO L226 Difference]: Without dead ends: 1032 [2024-11-18 21:10:59,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-18 21:10:59,902 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 489 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 21:10:59,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 535 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 21:10:59,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2024-11-18 21:10:59,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 798. [2024-11-18 21:10:59,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 619 states have (on average 1.3263327948303716) internal successors, (821), 624 states have internal predecessors, (821), 154 states have call successors, (154), 24 states have call predecessors, (154), 24 states have return successors, (154), 149 states have call predecessors, (154), 154 states have call successors, (154) [2024-11-18 21:10:59,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1129 transitions. [2024-11-18 21:10:59,981 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1129 transitions. Word has length 160 [2024-11-18 21:10:59,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:10:59,982 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 1129 transitions. [2024-11-18 21:10:59,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-18 21:10:59,982 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1129 transitions. [2024-11-18 21:10:59,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 21:10:59,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:10:59,984 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:59,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 21:10:59,984 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:10:59,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:10:59,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1569158131, now seen corresponding path program 1 times [2024-11-18 21:10:59,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:10:59,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687001724] [2024-11-18 21:10:59,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:10:59,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:11:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:11:00,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 21:11:00,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:11:00,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687001724] [2024-11-18 21:11:00,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687001724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:11:00,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:11:00,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 21:11:00,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553741670] [2024-11-18 21:11:00,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:11:00,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 21:11:00,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:11:00,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 21:11:00,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:11:00,881 INFO L87 Difference]: Start difference. First operand 798 states and 1129 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-18 21:11:01,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:11:01,529 INFO L93 Difference]: Finished difference Result 1461 states and 2040 transitions. [2024-11-18 21:11:01,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 21:11:01,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 161 [2024-11-18 21:11:01,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:11:01,535 INFO L225 Difference]: With dead ends: 1461 [2024-11-18 21:11:01,535 INFO L226 Difference]: Without dead ends: 1114 [2024-11-18 21:11:01,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-11-18 21:11:01,537 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 301 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 21:11:01,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 294 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 21:11:01,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2024-11-18 21:11:01,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 808. [2024-11-18 21:11:01,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 629 states have (on average 1.329093799682035) internal successors, (836), 634 states have internal predecessors, (836), 154 states have call successors, (154), 24 states have call predecessors, (154), 24 states have return successors, (154), 149 states have call predecessors, (154), 154 states have call successors, (154) [2024-11-18 21:11:01,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1144 transitions. [2024-11-18 21:11:01,623 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1144 transitions. Word has length 161 [2024-11-18 21:11:01,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:11:01,623 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1144 transitions. [2024-11-18 21:11:01,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-18 21:11:01,624 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1144 transitions. [2024-11-18 21:11:01,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 21:11:01,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:11:01,625 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:01,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 21:11:01,625 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:11:01,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:11:01,625 INFO L85 PathProgramCache]: Analyzing trace with hash -950801803, now seen corresponding path program 1 times [2024-11-18 21:11:01,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:11:01,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102986607] [2024-11-18 21:11:01,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:11:01,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:11:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:11:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 36 proven. 96 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2024-11-18 21:11:05,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:11:05,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102986607] [2024-11-18 21:11:05,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102986607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 21:11:05,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768203891] [2024-11-18 21:11:05,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:11:05,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:11:05,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:11:05,801 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 21:11:05,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 21:11:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:11:05,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 21:11:05,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:11:06,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 680 proven. 72 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2024-11-18 21:11:06,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 21:11:08,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 60 proven. 75 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-11-18 21:11:08,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768203891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 21:11:08,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 21:11:08,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 37 [2024-11-18 21:11:08,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380799557] [2024-11-18 21:11:08,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 21:11:08,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-18 21:11:08,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:11:08,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-18 21:11:08,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1130, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 21:11:08,226 INFO L87 Difference]: Start difference. First operand 808 states and 1144 transitions. Second operand has 37 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 12 states have call successors, (72), 5 states have call predecessors, (72), 9 states have return successors, (72), 13 states have call predecessors, (72), 12 states have call successors, (72) [2024-11-18 21:11:14,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:11:14,785 INFO L93 Difference]: Finished difference Result 3734 states and 5147 transitions. [2024-11-18 21:11:14,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-18 21:11:14,786 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 12 states have call successors, (72), 5 states have call predecessors, (72), 9 states have return successors, (72), 13 states have call predecessors, (72), 12 states have call successors, (72) Word has length 161 [2024-11-18 21:11:14,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:11:14,797 INFO L225 Difference]: With dead ends: 3734 [2024-11-18 21:11:14,797 INFO L226 Difference]: Without dead ends: 2970 [2024-11-18 21:11:14,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4906 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2157, Invalid=12605, Unknown=0, NotChecked=0, Total=14762 [2024-11-18 21:11:14,803 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 1727 mSDsluCounter, 2046 mSDsCounter, 0 mSdLazyCounter, 3330 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 2235 SdHoareTripleChecker+Invalid, 4010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 3330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-18 21:11:14,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1770 Valid, 2235 Invalid, 4010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 3330 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-18 21:11:14,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2024-11-18 21:11:15,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1499. [2024-11-18 21:11:15,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1059 states have (on average 1.259678942398489) internal successors, (1334), 1065 states have internal predecessors, (1334), 372 states have call successors, (372), 67 states have call predecessors, (372), 67 states have return successors, (372), 366 states have call predecessors, (372), 372 states have call successors, (372) [2024-11-18 21:11:15,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 2078 transitions. [2024-11-18 21:11:15,055 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 2078 transitions. Word has length 161 [2024-11-18 21:11:15,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:11:15,056 INFO L471 AbstractCegarLoop]: Abstraction has 1499 states and 2078 transitions. [2024-11-18 21:11:15,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 3.942857142857143) internal successors, (138), 34 states have internal predecessors, (138), 12 states have call successors, (72), 5 states have call predecessors, (72), 9 states have return successors, (72), 13 states have call predecessors, (72), 12 states have call successors, (72) [2024-11-18 21:11:15,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 2078 transitions. [2024-11-18 21:11:15,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 21:11:15,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:11:15,058 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:15,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 21:11:15,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 21:11:15,259 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:11:15,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:11:15,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1310992693, now seen corresponding path program 1 times [2024-11-18 21:11:15,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:11:15,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303741286] [2024-11-18 21:11:15,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:11:15,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:11:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:11:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 21:11:15,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:11:15,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303741286] [2024-11-18 21:11:15,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303741286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:11:15,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:11:15,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 21:11:15,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934849895] [2024-11-18 21:11:15,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:11:15,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 21:11:15,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:11:15,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 21:11:15,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:11:15,462 INFO L87 Difference]: Start difference. First operand 1499 states and 2078 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-18 21:11:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:11:16,059 INFO L93 Difference]: Finished difference Result 2872 states and 3889 transitions. [2024-11-18 21:11:16,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 21:11:16,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 161 [2024-11-18 21:11:16,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:11:16,068 INFO L225 Difference]: With dead ends: 2872 [2024-11-18 21:11:16,068 INFO L226 Difference]: Without dead ends: 1798 [2024-11-18 21:11:16,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-18 21:11:16,073 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 214 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:11:16,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 243 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 21:11:16,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2024-11-18 21:11:16,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1216. [2024-11-18 21:11:16,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 841 states have (on average 1.243757431629013) internal successors, (1046), 841 states have internal predecessors, (1046), 312 states have call successors, (312), 62 states have call predecessors, (312), 62 states have return successors, (312), 312 states have call predecessors, (312), 312 states have call successors, (312) [2024-11-18 21:11:16,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1670 transitions. [2024-11-18 21:11:16,295 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1670 transitions. Word has length 161 [2024-11-18 21:11:16,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:11:16,295 INFO L471 AbstractCegarLoop]: Abstraction has 1216 states and 1670 transitions. [2024-11-18 21:11:16,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-18 21:11:16,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1670 transitions. [2024-11-18 21:11:16,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 21:11:16,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:11:16,297 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:16,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 21:11:16,297 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:11:16,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:11:16,297 INFO L85 PathProgramCache]: Analyzing trace with hash -329242443, now seen corresponding path program 1 times [2024-11-18 21:11:16,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:11:16,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808012831] [2024-11-18 21:11:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:11:16,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:11:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:11:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 21:11:17,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:11:17,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808012831] [2024-11-18 21:11:17,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808012831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:11:17,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:11:17,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 21:11:17,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538415432] [2024-11-18 21:11:17,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:11:17,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 21:11:17,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:11:17,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 21:11:17,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:11:17,141 INFO L87 Difference]: Start difference. First operand 1216 states and 1670 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24)