./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-27.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-27.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 a5c5d56cba99a6aed857c914dae8c8b6ecbf5d7f26fcada2d40cfcad19c68691 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 10:05:55,616 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 10:05:55,677 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 10:05:55,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 10:05:55,681 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 10:05:55,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 10:05:55,708 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 10:05:55,708 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 10:05:55,709 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 10:05:55,710 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 10:05:55,710 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 10:05:55,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 10:05:55,711 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 10:05:55,711 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 10:05:55,713 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 10:05:55,713 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 10:05:55,713 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 10:05:55,713 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 10:05:55,714 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 10:05:55,714 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 10:05:55,714 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 10:05:55,715 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 10:05:55,715 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 10:05:55,715 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 10:05:55,715 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 10:05:55,715 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 10:05:55,716 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 10:05:55,716 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 10:05:55,716 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 10:05:55,716 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 10:05:55,717 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 10:05:55,717 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 10:05:55,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 10:05:55,718 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 10:05:55,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 10:05:55,718 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 10:05:55,719 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 10:05:55,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 10:05:55,719 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 10:05:55,719 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 10:05:55,719 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 10:05:55,720 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 10:05:55,720 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5c5d56cba99a6aed857c914dae8c8b6ecbf5d7f26fcada2d40cfcad19c68691 [2024-11-22 10:05:55,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 10:05:55,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 10:05:55,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 10:05:55,940 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 10:05:55,941 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 10:05:55,943 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-27.i [2024-11-22 10:05:57,151 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 10:05:57,311 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 10:05:57,312 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-27.i [2024-11-22 10:05:57,318 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c9fc1af/7a79e5b9050344f18b9563c807cb7d5b/FLAG0ac2ced77 [2024-11-22 10:05:57,330 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c9fc1af/7a79e5b9050344f18b9563c807cb7d5b [2024-11-22 10:05:57,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 10:05:57,333 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 10:05:57,335 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 10:05:57,335 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 10:05:57,339 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 10:05:57,339 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:05:57" (1/1) ... [2024-11-22 10:05:57,340 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19480ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:57, skipping insertion in model container [2024-11-22 10:05:57,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:05:57" (1/1) ... [2024-11-22 10:05:57,362 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 10:05:57,504 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_floatingpointinfluence_no-floats_file-27.i[916,929] [2024-11-22 10:05:57,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 10:05:57,542 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 10:05:57,552 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_floatingpointinfluence_no-floats_file-27.i[916,929] [2024-11-22 10:05:57,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 10:05:57,582 INFO L204 MainTranslator]: Completed translation [2024-11-22 10:05:57,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:57 WrapperNode [2024-11-22 10:05:57,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 10:05:57,584 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 10:05:57,584 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 10:05:57,584 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 10:05:57,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:57" (1/1) ... [2024-11-22 10:05:57,597 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:57" (1/1) ... [2024-11-22 10:05:57,621 INFO L138 Inliner]: procedures = 26, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 108 [2024-11-22 10:05:57,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 10:05:57,622 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 10:05:57,622 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 10:05:57,622 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 10:05:57,634 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:57" (1/1) ... [2024-11-22 10:05:57,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:57" (1/1) ... [2024-11-22 10:05:57,635 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:57" (1/1) ... [2024-11-22 10:05:57,646 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]. [2024-11-22 10:05:57,647 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:57" (1/1) ... [2024-11-22 10:05:57,647 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:57" (1/1) ... [2024-11-22 10:05:57,649 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:57" (1/1) ... [2024-11-22 10:05:57,653 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:57" (1/1) ... [2024-11-22 10:05:57,654 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:57" (1/1) ... [2024-11-22 10:05:57,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:57" (1/1) ... [2024-11-22 10:05:57,656 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 10:05:57,657 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 10:05:57,657 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 10:05:57,657 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 10:05:57,658 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:57" (1/1) ... [2024-11-22 10:05:57,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 10:05:57,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:05:57,699 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) [2024-11-22 10:05:57,704 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 [2024-11-22 10:05:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 10:05:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 10:05:57,744 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 10:05:57,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 10:05:57,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 10:05:57,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 10:05:57,801 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 10:05:57,803 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 10:05:58,020 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-22 10:05:58,020 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 10:05:58,035 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 10:05:58,035 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 10:05:58,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:05:58 BoogieIcfgContainer [2024-11-22 10:05:58,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 10:05:58,037 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 10:05:58,037 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 10:05:58,041 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 10:05:58,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:05:57" (1/3) ... [2024-11-22 10:05:58,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3140023e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:05:58, skipping insertion in model container [2024-11-22 10:05:58,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:05:57" (2/3) ... [2024-11-22 10:05:58,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3140023e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:05:58, skipping insertion in model container [2024-11-22 10:05:58,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:05:58" (3/3) ... [2024-11-22 10:05:58,044 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-27.i [2024-11-22 10:05:58,079 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 10:05:58,084 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 10:05:58,153 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 10:05:58,158 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;@1381bcf8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 10:05:58,158 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 10:05:58,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 34 states have internal predecessors, (44), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-22 10:05:58,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-22 10:05:58,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:05:58,172 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:05:58,173 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:05:58,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:05:58,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1570629044, now seen corresponding path program 1 times [2024-11-22 10:05:58,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:05:58,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324070520] [2024-11-22 10:05:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:05:58,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:05:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:05:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-22 10:05:58,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:05:58,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324070520] [2024-11-22 10:05:58,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324070520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:05:58,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468823638] [2024-11-22 10:05:58,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:05:58,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:05:58,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:05:58,437 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) [2024-11-22 10:05:58,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 10:05:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:05:58,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 10:05:58,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:05:58,579 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-22 10:05:58,579 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 10:05:58,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468823638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:05:58,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 10:05:58,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 10:05:58,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022116276] [2024-11-22 10:05:58,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:05:58,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 10:05:58,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:05:58,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 10:05:58,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 10:05:58,612 INFO L87 Difference]: Start difference. First operand has 53 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 34 states have internal predecessors, (44), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-22 10:05:58,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:05:58,632 INFO L93 Difference]: Finished difference Result 99 states and 167 transitions. [2024-11-22 10:05:58,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 10:05:58,635 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 109 [2024-11-22 10:05:58,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:05:58,640 INFO L225 Difference]: With dead ends: 99 [2024-11-22 10:05:58,641 INFO L226 Difference]: Without dead ends: 49 [2024-11-22 10:05:58,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 10:05:58,648 INFO L432 NwaCegarLoop]: 71 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, 71 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 [2024-11-22 10:05:58,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 10:05:58,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-22 10:05:58,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-22 10:05:58,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-22 10:05:58,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2024-11-22 10:05:58,682 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 109 [2024-11-22 10:05:58,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:05:58,682 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2024-11-22 10:05:58,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-22 10:05:58,683 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2024-11-22 10:05:58,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-22 10:05:58,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:05:58,687 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:05:58,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 10:05:58,887 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 [2024-11-22 10:05:58,888 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:05:58,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:05:58,890 INFO L85 PathProgramCache]: Analyzing trace with hash 868342326, now seen corresponding path program 1 times [2024-11-22 10:05:58,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:05:58,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516682935] [2024-11-22 10:05:58,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:05:58,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:05:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:06:02,339 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 10:06:02,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:06:02,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516682935] [2024-11-22 10:06:02,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516682935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:06:02,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:06:02,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 10:06:02,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197567526] [2024-11-22 10:06:02,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:06:02,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 10:06:02,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:06:02,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 10:06:02,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-22 10:06:02,342 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:02,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:06:02,849 INFO L93 Difference]: Finished difference Result 110 states and 142 transitions. [2024-11-22 10:06:02,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 10:06:02,850 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 109 [2024-11-22 10:06:02,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:06:02,852 INFO L225 Difference]: With dead ends: 110 [2024-11-22 10:06:02,852 INFO L226 Difference]: Without dead ends: 108 [2024-11-22 10:06:02,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:06:02,855 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 59 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 10:06:02,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 387 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 10:06:02,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-22 10:06:02,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 75. [2024-11-22 10:06:02,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 54 states have internal predecessors, (67), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-22 10:06:02,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 105 transitions. [2024-11-22 10:06:02,879 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 105 transitions. Word has length 109 [2024-11-22 10:06:02,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:06:02,880 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 105 transitions. [2024-11-22 10:06:02,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:02,881 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 105 transitions. [2024-11-22 10:06:02,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-22 10:06:02,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:06:02,883 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:06:02,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 10:06:02,883 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:06:02,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:06:02,884 INFO L85 PathProgramCache]: Analyzing trace with hash -906665036, now seen corresponding path program 1 times [2024-11-22 10:06:02,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:06:02,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286798960] [2024-11-22 10:06:02,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:06:02,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:06:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:06:05,972 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 10:06:05,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:06:05,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286798960] [2024-11-22 10:06:05,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286798960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:06:05,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:06:05,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 10:06:05,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312518786] [2024-11-22 10:06:05,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:06:05,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 10:06:05,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:06:05,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 10:06:05,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-22 10:06:05,975 INFO L87 Difference]: Start difference. First operand 75 states and 105 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:06,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:06:06,326 INFO L93 Difference]: Finished difference Result 108 states and 140 transitions. [2024-11-22 10:06:06,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 10:06:06,327 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 109 [2024-11-22 10:06:06,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:06:06,329 INFO L225 Difference]: With dead ends: 108 [2024-11-22 10:06:06,329 INFO L226 Difference]: Without dead ends: 106 [2024-11-22 10:06:06,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:06:06,330 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 83 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 10:06:06,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 294 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 10:06:06,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-22 10:06:06,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 75. [2024-11-22 10:06:06,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 54 states have internal predecessors, (67), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-22 10:06:06,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 105 transitions. [2024-11-22 10:06:06,345 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 105 transitions. Word has length 109 [2024-11-22 10:06:06,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:06:06,345 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 105 transitions. [2024-11-22 10:06:06,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:06,346 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 105 transitions. [2024-11-22 10:06:06,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-22 10:06:06,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:06:06,347 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:06:06,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 10:06:06,347 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:06:06,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:06:06,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1569406904, now seen corresponding path program 1 times [2024-11-22 10:06:06,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:06:06,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655004008] [2024-11-22 10:06:06,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:06:06,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:06:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:06:07,529 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 10:06:07,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:06:07,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655004008] [2024-11-22 10:06:07,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655004008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:06:07,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:06:07,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 10:06:07,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875079629] [2024-11-22 10:06:07,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:06:07,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 10:06:07,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:06:07,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 10:06:07,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-22 10:06:07,532 INFO L87 Difference]: Start difference. First operand 75 states and 105 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:07,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:06:07,867 INFO L93 Difference]: Finished difference Result 185 states and 250 transitions. [2024-11-22 10:06:07,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 10:06:07,868 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 109 [2024-11-22 10:06:07,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:06:07,870 INFO L225 Difference]: With dead ends: 185 [2024-11-22 10:06:07,870 INFO L226 Difference]: Without dead ends: 113 [2024-11-22 10:06:07,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-22 10:06:07,872 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 61 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 10:06:07,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 429 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 10:06:07,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-22 10:06:07,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 75. [2024-11-22 10:06:07,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 54 states have internal predecessors, (65), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-22 10:06:07,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 103 transitions. [2024-11-22 10:06:07,883 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 103 transitions. Word has length 109 [2024-11-22 10:06:07,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:06:07,886 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 103 transitions. [2024-11-22 10:06:07,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:07,886 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 103 transitions. [2024-11-22 10:06:07,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-22 10:06:07,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:06:07,889 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:06:07,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 10:06:07,890 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:06:07,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:06:07,890 INFO L85 PathProgramCache]: Analyzing trace with hash -205600458, now seen corresponding path program 1 times [2024-11-22 10:06:07,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:06:07,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777960695] [2024-11-22 10:06:07,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:06:07,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:06:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:06:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 10:06:09,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:06:09,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777960695] [2024-11-22 10:06:09,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777960695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:06:09,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:06:09,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 10:06:09,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80405022] [2024-11-22 10:06:09,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:06:09,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 10:06:09,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:06:09,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 10:06:09,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-22 10:06:09,373 INFO L87 Difference]: Start difference. First operand 75 states and 103 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:09,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:06:09,953 INFO L93 Difference]: Finished difference Result 152 states and 200 transitions. [2024-11-22 10:06:09,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 10:06:09,954 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 109 [2024-11-22 10:06:09,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:06:09,958 INFO L225 Difference]: With dead ends: 152 [2024-11-22 10:06:09,958 INFO L226 Difference]: Without dead ends: 150 [2024-11-22 10:06:09,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-11-22 10:06:09,959 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 104 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 10:06:09,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 400 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 10:06:09,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-22 10:06:09,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 129. [2024-11-22 10:06:09,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 88 states have (on average 1.1931818181818181) internal successors, (105), 89 states have internal predecessors, (105), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-22 10:06:09,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 177 transitions. [2024-11-22 10:06:09,981 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 177 transitions. Word has length 109 [2024-11-22 10:06:09,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:06:09,981 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 177 transitions. [2024-11-22 10:06:09,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:09,982 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 177 transitions. [2024-11-22 10:06:09,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-22 10:06:09,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:06:09,983 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:06:09,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 10:06:09,983 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:06:09,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:06:09,984 INFO L85 PathProgramCache]: Analyzing trace with hash 913248035, now seen corresponding path program 1 times [2024-11-22 10:06:09,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:06:09,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341692825] [2024-11-22 10:06:09,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:06:09,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:06:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:06:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 10:06:14,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:06:14,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341692825] [2024-11-22 10:06:14,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341692825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:06:14,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:06:14,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 10:06:14,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716538914] [2024-11-22 10:06:14,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:06:14,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 10:06:14,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:06:14,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 10:06:14,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:06:14,271 INFO L87 Difference]: Start difference. First operand 129 states and 177 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:15,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:06:15,937 INFO L93 Difference]: Finished difference Result 187 states and 242 transitions. [2024-11-22 10:06:15,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 10:06:15,938 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 110 [2024-11-22 10:06:15,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:06:15,941 INFO L225 Difference]: With dead ends: 187 [2024-11-22 10:06:15,941 INFO L226 Difference]: Without dead ends: 185 [2024-11-22 10:06:15,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-22 10:06:15,944 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 93 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 10:06:15,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 354 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 10:06:15,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-22 10:06:15,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 134. [2024-11-22 10:06:15,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 93 states have (on average 1.2150537634408602) internal successors, (113), 94 states have internal predecessors, (113), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-22 10:06:15,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 185 transitions. [2024-11-22 10:06:15,964 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 185 transitions. Word has length 110 [2024-11-22 10:06:15,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:06:15,965 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 185 transitions. [2024-11-22 10:06:15,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:15,965 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 185 transitions. [2024-11-22 10:06:15,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-22 10:06:15,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:06:15,966 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:06:15,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 10:06:15,967 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:06:15,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:06:15,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1722594661, now seen corresponding path program 1 times [2024-11-22 10:06:15,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:06:15,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766036703] [2024-11-22 10:06:15,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:06:15,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:06:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:06:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 10:06:22,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:06:22,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766036703] [2024-11-22 10:06:22,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766036703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:06:22,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:06:22,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 10:06:22,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375680434] [2024-11-22 10:06:22,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:06:22,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 10:06:22,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:06:22,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 10:06:22,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:06:22,364 INFO L87 Difference]: Start difference. First operand 134 states and 185 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:27,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:06:27,469 INFO L93 Difference]: Finished difference Result 182 states and 237 transitions. [2024-11-22 10:06:27,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 10:06:27,470 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 110 [2024-11-22 10:06:27,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:06:27,471 INFO L225 Difference]: With dead ends: 182 [2024-11-22 10:06:27,471 INFO L226 Difference]: Without dead ends: 180 [2024-11-22 10:06:27,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2024-11-22 10:06:27,472 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 72 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 10:06:27,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 483 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 10:06:27,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-22 10:06:27,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 134. [2024-11-22 10:06:27,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 93 states have (on average 1.2150537634408602) internal successors, (113), 94 states have internal predecessors, (113), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-22 10:06:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 185 transitions. [2024-11-22 10:06:27,488 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 185 transitions. Word has length 110 [2024-11-22 10:06:27,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:06:27,488 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 185 transitions. [2024-11-22 10:06:27,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:27,489 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 185 transitions. [2024-11-22 10:06:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-22 10:06:27,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:06:27,490 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:06:27,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 10:06:27,490 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:06:27,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:06:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash -2140231638, now seen corresponding path program 1 times [2024-11-22 10:06:27,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:06:27,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689293079] [2024-11-22 10:06:27,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:06:27,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:06:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:06:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 10:06:27,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:06:27,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689293079] [2024-11-22 10:06:27,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689293079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:06:27,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:06:27,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 10:06:27,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022149950] [2024-11-22 10:06:27,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:06:27,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 10:06:27,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:06:27,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 10:06:27,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 10:06:27,529 INFO L87 Difference]: Start difference. First operand 134 states and 185 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:27,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:06:27,564 INFO L93 Difference]: Finished difference Result 365 states and 507 transitions. [2024-11-22 10:06:27,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 10:06:27,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 110 [2024-11-22 10:06:27,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:06:27,568 INFO L225 Difference]: With dead ends: 365 [2024-11-22 10:06:27,568 INFO L226 Difference]: Without dead ends: 238 [2024-11-22 10:06:27,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 10:06:27,570 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 34 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 10:06:27,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 217 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 10:06:27,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-22 10:06:27,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2024-11-22 10:06:27,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 157 states have (on average 1.1910828025477707) internal successors, (187), 158 states have internal predecessors, (187), 70 states have call successors, (70), 8 states have call predecessors, (70), 8 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-22 10:06:27,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 327 transitions. [2024-11-22 10:06:27,603 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 327 transitions. Word has length 110 [2024-11-22 10:06:27,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:06:27,604 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 327 transitions. [2024-11-22 10:06:27,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:27,605 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 327 transitions. [2024-11-22 10:06:27,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-22 10:06:27,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:06:27,605 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:06:27,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 10:06:27,606 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:06:27,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:06:27,606 INFO L85 PathProgramCache]: Analyzing trace with hash 379728296, now seen corresponding path program 1 times [2024-11-22 10:06:27,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:06:27,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342205265] [2024-11-22 10:06:27,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:06:27,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:06:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:06:29,172 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 10:06:29,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:06:29,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342205265] [2024-11-22 10:06:29,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342205265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:06:29,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:06:29,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 10:06:29,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531759848] [2024-11-22 10:06:29,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:06:29,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 10:06:29,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:06:29,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 10:06:29,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-22 10:06:29,176 INFO L87 Difference]: Start difference. First operand 236 states and 327 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:29,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:06:29,684 INFO L93 Difference]: Finished difference Result 478 states and 650 transitions. [2024-11-22 10:06:29,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 10:06:29,684 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 110 [2024-11-22 10:06:29,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:06:29,686 INFO L225 Difference]: With dead ends: 478 [2024-11-22 10:06:29,686 INFO L226 Difference]: Without dead ends: 350 [2024-11-22 10:06:29,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2024-11-22 10:06:29,687 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 164 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 10:06:29,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 374 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 10:06:29,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-22 10:06:29,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 299. [2024-11-22 10:06:29,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 201 states have (on average 1.1840796019900497) internal successors, (238), 202 states have internal predecessors, (238), 87 states have call successors, (87), 10 states have call predecessors, (87), 10 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-22 10:06:29,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 412 transitions. [2024-11-22 10:06:29,720 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 412 transitions. Word has length 110 [2024-11-22 10:06:29,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:06:29,720 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 412 transitions. [2024-11-22 10:06:29,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:29,721 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 412 transitions. [2024-11-22 10:06:29,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-22 10:06:29,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:06:29,722 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:06:29,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 10:06:29,723 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:06:29,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:06:29,723 INFO L85 PathProgramCache]: Analyzing trace with hash 637893734, now seen corresponding path program 1 times [2024-11-22 10:06:29,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:06:29,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128363250] [2024-11-22 10:06:29,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:06:29,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:06:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:06:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 10:06:31,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:06:31,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128363250] [2024-11-22 10:06:31,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128363250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:06:31,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:06:31,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 10:06:31,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598678434] [2024-11-22 10:06:31,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:06:31,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 10:06:31,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:06:31,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 10:06:31,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-22 10:06:31,488 INFO L87 Difference]: Start difference. First operand 299 states and 412 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-22 10:06:32,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:06:32,144 INFO L93 Difference]: Finished difference Result 302 states and 414 transitions. [2024-11-22 10:06:32,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 10:06:32,144 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 110 [2024-11-22 10:06:32,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:06:32,146 INFO L225 Difference]: With dead ends: 302 [2024-11-22 10:06:32,146 INFO L226 Difference]: Without dead ends: 300 [2024-11-22 10:06:32,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2024-11-22 10:06:32,146 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 85 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 10:06:32,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 333 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 10:06:32,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-22 10:06:32,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 299. [2024-11-22 10:06:32,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 201 states have (on average 1.1791044776119404) internal successors, (237), 202 states have internal predecessors, (237), 87 states have call successors, (87), 10 states have call predecessors, (87), 10 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-22 10:06:32,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 411 transitions. [2024-11-22 10:06:32,171 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 411 transitions. Word has length 110 [2024-11-22 10:06:32,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:06:32,172 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 411 transitions. [2024-11-22 10:06:32,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-22 10:06:32,172 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 411 transitions. [2024-11-22 10:06:32,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 10:06:32,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:06:32,173 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:06:32,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 10:06:32,173 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:06:32,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:06:32,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1765204623, now seen corresponding path program 1 times [2024-11-22 10:06:32,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:06:32,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684782051] [2024-11-22 10:06:32,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:06:32,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:06:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:06:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 10:06:36,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:06:36,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684782051] [2024-11-22 10:06:36,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684782051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:06:36,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:06:36,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 10:06:36,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125921333] [2024-11-22 10:06:36,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:06:36,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 10:06:36,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:06:36,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 10:06:36,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:06:36,199 INFO L87 Difference]: Start difference. First operand 299 states and 411 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:38,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:06:38,370 INFO L93 Difference]: Finished difference Result 449 states and 601 transitions. [2024-11-22 10:06:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 10:06:38,371 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 111 [2024-11-22 10:06:38,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:06:38,372 INFO L225 Difference]: With dead ends: 449 [2024-11-22 10:06:38,372 INFO L226 Difference]: Without dead ends: 315 [2024-11-22 10:06:38,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2024-11-22 10:06:38,373 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 104 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 10:06:38,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 600 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 10:06:38,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-22 10:06:38,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 241. [2024-11-22 10:06:38,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 162 states have (on average 1.1666666666666667) internal successors, (189), 163 states have internal predecessors, (189), 70 states have call successors, (70), 8 states have call predecessors, (70), 8 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-22 10:06:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 329 transitions. [2024-11-22 10:06:38,398 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 329 transitions. Word has length 111 [2024-11-22 10:06:38,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:06:38,400 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 329 transitions. [2024-11-22 10:06:38,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:38,401 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 329 transitions. [2024-11-22 10:06:38,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 10:06:38,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:06:38,402 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:06:38,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 10:06:38,402 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:06:38,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:06:38,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1763357581, now seen corresponding path program 1 times [2024-11-22 10:06:38,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:06:38,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804655679] [2024-11-22 10:06:38,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:06:38,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:06:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:06:42,041 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 10:06:42,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:06:42,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804655679] [2024-11-22 10:06:42,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804655679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:06:42,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:06:42,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 10:06:42,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74351044] [2024-11-22 10:06:42,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:06:42,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 10:06:42,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:06:42,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 10:06:42,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:06:42,043 INFO L87 Difference]: Start difference. First operand 241 states and 329 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:46,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:06:46,409 INFO L93 Difference]: Finished difference Result 306 states and 399 transitions. [2024-11-22 10:06:46,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 10:06:46,410 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 111 [2024-11-22 10:06:46,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:06:46,412 INFO L225 Difference]: With dead ends: 306 [2024-11-22 10:06:46,412 INFO L226 Difference]: Without dead ends: 304 [2024-11-22 10:06:46,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-11-22 10:06:46,412 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 85 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 10:06:46,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 550 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 10:06:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-22 10:06:46,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 240. [2024-11-22 10:06:46,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 161 states have (on average 1.1614906832298137) internal successors, (187), 162 states have internal predecessors, (187), 70 states have call successors, (70), 8 states have call predecessors, (70), 8 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-22 10:06:46,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 327 transitions. [2024-11-22 10:06:46,436 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 327 transitions. Word has length 111 [2024-11-22 10:06:46,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:06:46,436 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 327 transitions. [2024-11-22 10:06:46,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:46,437 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 327 transitions. [2024-11-22 10:06:46,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 10:06:46,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:06:46,437 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:06:46,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 10:06:46,438 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:06:46,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:06:46,438 INFO L85 PathProgramCache]: Analyzing trace with hash -955857997, now seen corresponding path program 1 times [2024-11-22 10:06:46,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:06:46,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863079951] [2024-11-22 10:06:46,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:06:46,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:06:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:06:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 10:06:49,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:06:49,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863079951] [2024-11-22 10:06:49,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863079951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:06:49,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:06:49,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 10:06:49,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499586992] [2024-11-22 10:06:49,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:06:49,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 10:06:49,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:06:49,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 10:06:49,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:06:49,633 INFO L87 Difference]: Start difference. First operand 240 states and 327 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:50,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:06:50,784 INFO L93 Difference]: Finished difference Result 299 states and 391 transitions. [2024-11-22 10:06:50,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 10:06:50,784 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 111 [2024-11-22 10:06:50,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:06:50,786 INFO L225 Difference]: With dead ends: 299 [2024-11-22 10:06:50,786 INFO L226 Difference]: Without dead ends: 297 [2024-11-22 10:06:50,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-11-22 10:06:50,788 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 86 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 10:06:50,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 558 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 10:06:50,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-22 10:06:50,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 241. [2024-11-22 10:06:50,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 162 states have (on average 1.1666666666666667) internal successors, (189), 163 states have internal predecessors, (189), 70 states have call successors, (70), 8 states have call predecessors, (70), 8 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-22 10:06:50,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 329 transitions. [2024-11-22 10:06:50,813 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 329 transitions. Word has length 111 [2024-11-22 10:06:50,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:06:50,814 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 329 transitions. [2024-11-22 10:06:50,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:50,814 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 329 transitions. [2024-11-22 10:06:50,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 10:06:50,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:06:50,815 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:06:50,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 10:06:50,815 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:06:50,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:06:50,815 INFO L85 PathProgramCache]: Analyzing trace with hash -954010955, now seen corresponding path program 1 times [2024-11-22 10:06:50,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:06:50,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139954493] [2024-11-22 10:06:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:06:50,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:06:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:06:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-22 10:06:54,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:06:54,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139954493] [2024-11-22 10:06:54,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139954493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:06:54,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:06:54,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 10:06:54,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714657232] [2024-11-22 10:06:54,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:06:54,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 10:06:54,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:06:54,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 10:06:54,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:06:54,160 INFO L87 Difference]: Start difference. First operand 241 states and 329 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:54,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:06:54,932 INFO L93 Difference]: Finished difference Result 297 states and 389 transitions. [2024-11-22 10:06:54,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 10:06:54,933 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 111 [2024-11-22 10:06:54,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:06:54,934 INFO L225 Difference]: With dead ends: 297 [2024-11-22 10:06:54,934 INFO L226 Difference]: Without dead ends: 295 [2024-11-22 10:06:54,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-11-22 10:06:54,935 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 82 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 10:06:54,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 494 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 10:06:54,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-22 10:06:54,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 238. [2024-11-22 10:06:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 159 states have (on average 1.1635220125786163) internal successors, (185), 160 states have internal predecessors, (185), 70 states have call successors, (70), 8 states have call predecessors, (70), 8 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-22 10:06:54,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 325 transitions. [2024-11-22 10:06:54,956 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 325 transitions. Word has length 111 [2024-11-22 10:06:54,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:06:54,956 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 325 transitions. [2024-11-22 10:06:54,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:54,956 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 325 transitions. [2024-11-22 10:06:54,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-22 10:06:54,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:06:54,958 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:06:54,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 10:06:54,958 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:06:54,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:06:54,959 INFO L85 PathProgramCache]: Analyzing trace with hash -12755988, now seen corresponding path program 1 times [2024-11-22 10:06:54,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:06:54,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474563131] [2024-11-22 10:06:54,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:06:54,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:06:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:06:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2281 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2272 trivial. 0 not checked. [2024-11-22 10:06:56,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:06:56,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474563131] [2024-11-22 10:06:56,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474563131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:06:56,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:06:56,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 10:06:56,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233545824] [2024-11-22 10:06:56,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:06:56,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 10:06:56,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:06:56,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 10:06:56,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 10:06:56,295 INFO L87 Difference]: Start difference. First operand 238 states and 325 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:56,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:06:56,569 INFO L93 Difference]: Finished difference Result 305 states and 396 transitions. [2024-11-22 10:06:56,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 10:06:56,569 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 215 [2024-11-22 10:06:56,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:06:56,571 INFO L225 Difference]: With dead ends: 305 [2024-11-22 10:06:56,571 INFO L226 Difference]: Without dead ends: 303 [2024-11-22 10:06:56,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-22 10:06:56,572 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 55 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 10:06:56,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 351 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 10:06:56,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-22 10:06:56,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 184. [2024-11-22 10:06:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 124 states have (on average 1.1693548387096775) internal successors, (145), 125 states have internal predecessors, (145), 53 states have call successors, (53), 6 states have call predecessors, (53), 6 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-22 10:06:56,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 251 transitions. [2024-11-22 10:06:56,592 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 251 transitions. Word has length 215 [2024-11-22 10:06:56,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:06:56,592 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 251 transitions. [2024-11-22 10:06:56,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-22 10:06:56,593 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 251 transitions. [2024-11-22 10:06:56,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-22 10:06:56,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:06:56,594 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:06:56,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 10:06:56,594 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:06:56,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:06:56,595 INFO L85 PathProgramCache]: Analyzing trace with hash -457020364, now seen corresponding path program 1 times [2024-11-22 10:06:56,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:06:56,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945839422] [2024-11-22 10:06:56,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:06:56,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:06:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:06:58,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2281 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 10:06:58,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:06:58,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945839422] [2024-11-22 10:06:58,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945839422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:06:58,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690613745] [2024-11-22 10:06:58,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:06:58,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:06:58,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:06:58,338 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) [2024-11-22 10:06:58,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 10:06:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:06:58,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 10:06:58,486 INFO L278 TraceCheckSpWp]: Computing forward predicates...