./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-66.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_fillercode_fillercodestructure_filler-pr-cn_file-66.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 366cd04e1cccaa3d248693408475f1d8f6198ae7da412e5cc3eb2ead8f221652 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 08:52:22,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 08:52:22,068 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 08:52:22,071 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 08:52:22,072 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 08:52:22,088 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 08:52:22,089 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 08:52:22,089 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 08:52:22,089 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 08:52:22,090 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 08:52:22,090 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 08:52:22,090 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 08:52:22,091 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 08:52:22,091 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 08:52:22,091 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 08:52:22,092 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 08:52:22,092 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 08:52:22,092 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 08:52:22,093 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 08:52:22,093 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 08:52:22,093 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 08:52:22,094 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 08:52:22,094 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 08:52:22,095 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 08:52:22,095 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 08:52:22,095 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 08:52:22,096 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 08:52:22,096 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 08:52:22,096 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 08:52:22,097 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 08:52:22,097 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 08:52:22,097 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 08:52:22,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 08:52:22,098 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 08:52:22,098 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 08:52:22,098 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 08:52:22,098 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 08:52:22,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 08:52:22,099 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 08:52:22,099 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 08:52:22,099 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 08:52:22,100 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 08:52:22,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 366cd04e1cccaa3d248693408475f1d8f6198ae7da412e5cc3eb2ead8f221652 [2024-11-22 08:52:22,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 08:52:22,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 08:52:22,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 08:52:22,352 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 08:52:22,354 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 08:52:22,355 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-66.i [2024-11-22 08:52:24,022 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 08:52:24,312 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 08:52:24,313 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-66.i [2024-11-22 08:52:24,328 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdf2079fe/5a08e21d1fc8461d857acc52598e905e/FLAG7e621c7d1 [2024-11-22 08:52:24,342 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdf2079fe/5a08e21d1fc8461d857acc52598e905e [2024-11-22 08:52:24,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 08:52:24,346 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 08:52:24,347 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 08:52:24,347 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 08:52:24,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 08:52:24,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:52:24" (1/1) ... [2024-11-22 08:52:24,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6554954c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:52:24, skipping insertion in model container [2024-11-22 08:52:24,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:52:24" (1/1) ... [2024-11-22 08:52:24,389 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 08:52:24,522 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-66.i[919,932] [2024-11-22 08:52:24,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 08:52:24,598 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 08:52:24,611 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-66.i[919,932] [2024-11-22 08:52:24,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 08:52:24,672 INFO L204 MainTranslator]: Completed translation [2024-11-22 08:52:24,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:52:24 WrapperNode [2024-11-22 08:52:24,672 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 08:52:24,673 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 08:52:24,673 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 08:52:24,673 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 08:52:24,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:52:24" (1/1) ... [2024-11-22 08:52:24,686 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:52:24" (1/1) ... [2024-11-22 08:52:24,711 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 253 [2024-11-22 08:52:24,737 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 08:52:24,737 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 08:52:24,738 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 08:52:24,738 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 08:52:24,752 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:52:24" (1/1) ... [2024-11-22 08:52:24,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:52:24" (1/1) ... [2024-11-22 08:52:24,756 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:52:24" (1/1) ... [2024-11-22 08:52:24,803 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 08:52:24,804 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:52:24" (1/1) ... [2024-11-22 08:52:24,804 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:52:24" (1/1) ... [2024-11-22 08:52:24,820 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:52:24" (1/1) ... [2024-11-22 08:52:24,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:52:24" (1/1) ... [2024-11-22 08:52:24,830 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:52:24" (1/1) ... [2024-11-22 08:52:24,836 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:52:24" (1/1) ... [2024-11-22 08:52:24,842 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 08:52:24,847 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 08:52:24,847 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 08:52:24,847 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 08:52:24,848 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:52:24" (1/1) ... [2024-11-22 08:52:24,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 08:52:24,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:52:24,892 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 08:52:24,896 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 08:52:24,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 08:52:24,940 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 08:52:24,941 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 08:52:24,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 08:52:24,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 08:52:24,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 08:52:25,009 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 08:52:25,011 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 08:52:25,336 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-22 08:52:25,336 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 08:52:25,356 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 08:52:25,356 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 08:52:25,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:52:25 BoogieIcfgContainer [2024-11-22 08:52:25,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 08:52:25,363 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 08:52:25,364 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 08:52:25,367 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 08:52:25,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:52:24" (1/3) ... [2024-11-22 08:52:25,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fbbbaa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:52:25, skipping insertion in model container [2024-11-22 08:52:25,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:52:24" (2/3) ... [2024-11-22 08:52:25,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fbbbaa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:52:25, skipping insertion in model container [2024-11-22 08:52:25,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:52:25" (3/3) ... [2024-11-22 08:52:25,371 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-66.i [2024-11-22 08:52:25,386 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 08:52:25,386 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 08:52:25,445 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 08:52:25,451 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;@322e5568, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 08:52:25,452 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 08:52:25,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 68 states have internal predecessors, (95), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-22 08:52:25,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:52:25,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:52:25,472 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:52:25,473 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:52:25,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:52:25,478 INFO L85 PathProgramCache]: Analyzing trace with hash -109430285, now seen corresponding path program 1 times [2024-11-22 08:52:25,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:52:25,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053173301] [2024-11-22 08:52:25,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:52:25,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:52:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:52:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2024-11-22 08:52:25,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:52:25,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053173301] [2024-11-22 08:52:25,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053173301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 08:52:25,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301290319] [2024-11-22 08:52:25,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:52:25,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:52:25,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:52:25,871 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 08:52:25,876 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 08:52:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:52:26,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 08:52:26,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:52:26,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2024-11-22 08:52:26,134 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 08:52:26,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301290319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:52:26,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 08:52:26,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 08:52:26,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536971213] [2024-11-22 08:52:26,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:52:26,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 08:52:26,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:52:26,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 08:52:26,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 08:52:26,200 INFO L87 Difference]: Start difference. First operand has 114 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 68 states have internal predecessors, (95), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-22 08:52:26,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:52:26,229 INFO L93 Difference]: Finished difference Result 221 states and 404 transitions. [2024-11-22 08:52:26,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 08:52:26,231 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) Word has length 270 [2024-11-22 08:52:26,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:52:26,237 INFO L225 Difference]: With dead ends: 221 [2024-11-22 08:52:26,238 INFO L226 Difference]: Without dead ends: 110 [2024-11-22 08:52:26,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 271 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 08:52:26,244 INFO L432 NwaCegarLoop]: 176 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, 176 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 08:52:26,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 08:52:26,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-22 08:52:26,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-22 08:52:26,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 64 states have (on average 1.375) internal successors, (88), 64 states have internal predecessors, (88), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-22 08:52:26,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 176 transitions. [2024-11-22 08:52:26,373 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 176 transitions. Word has length 270 [2024-11-22 08:52:26,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:52:26,373 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 176 transitions. [2024-11-22 08:52:26,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-22 08:52:26,374 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 176 transitions. [2024-11-22 08:52:26,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:52:26,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:52:26,378 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:52:26,394 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 08:52:26,579 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 08:52:26,580 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:52:26,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:52:26,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1819629905, now seen corresponding path program 1 times [2024-11-22 08:52:26,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:52:26,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826183911] [2024-11-22 08:52:26,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:52:26,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:52:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:52:33,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:52:33,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:52:33,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826183911] [2024-11-22 08:52:33,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826183911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:52:33,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:52:33,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-22 08:52:33,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590404164] [2024-11-22 08:52:33,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:52:33,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 08:52:33,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:52:33,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 08:52:33,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-11-22 08:52:34,000 INFO L87 Difference]: Start difference. First operand 110 states and 176 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:52:35,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:52:35,855 INFO L93 Difference]: Finished difference Result 378 states and 585 transitions. [2024-11-22 08:52:35,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 08:52:35,856 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-22 08:52:35,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:52:35,863 INFO L225 Difference]: With dead ends: 378 [2024-11-22 08:52:35,864 INFO L226 Difference]: Without dead ends: 271 [2024-11-22 08:52:35,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-22 08:52:35,867 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 344 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 08:52:35,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1039 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 08:52:35,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-22 08:52:35,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 180. [2024-11-22 08:52:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 129 states have (on average 1.4883720930232558) internal successors, (192), 130 states have internal predecessors, (192), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-22 08:52:35,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 288 transitions. [2024-11-22 08:52:35,922 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 288 transitions. Word has length 270 [2024-11-22 08:52:35,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:52:35,925 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 288 transitions. [2024-11-22 08:52:35,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:52:35,926 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 288 transitions. [2024-11-22 08:52:35,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:52:35,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:52:35,933 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:52:35,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 08:52:35,934 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:52:35,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:52:35,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1821476947, now seen corresponding path program 1 times [2024-11-22 08:52:35,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:52:35,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565829695] [2024-11-22 08:52:35,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:52:35,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:52:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:52:59,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:52:59,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:52:59,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565829695] [2024-11-22 08:52:59,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565829695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:52:59,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:52:59,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 08:52:59,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354753878] [2024-11-22 08:52:59,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:52:59,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 08:52:59,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:52:59,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 08:52:59,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-22 08:52:59,396 INFO L87 Difference]: Start difference. First operand 180 states and 288 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:53:00,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:53:00,528 INFO L93 Difference]: Finished difference Result 252 states and 382 transitions. [2024-11-22 08:53:00,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 08:53:00,529 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-22 08:53:00,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:53:00,538 INFO L225 Difference]: With dead ends: 252 [2024-11-22 08:53:00,538 INFO L226 Difference]: Without dead ends: 250 [2024-11-22 08:53:00,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2024-11-22 08:53:00,540 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 207 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 08:53:00,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1148 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 08:53:00,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-22 08:53:00,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 185. [2024-11-22 08:53:00,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 134 states have (on average 1.4850746268656716) internal successors, (199), 135 states have internal predecessors, (199), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-22 08:53:00,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 295 transitions. [2024-11-22 08:53:00,563 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 295 transitions. Word has length 270 [2024-11-22 08:53:00,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:53:00,564 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 295 transitions. [2024-11-22 08:53:00,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:53:00,564 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 295 transitions. [2024-11-22 08:53:00,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:53:00,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:53:00,567 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:53:00,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 08:53:00,567 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:53:00,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:53:00,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1561464467, now seen corresponding path program 1 times [2024-11-22 08:53:00,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:53:00,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426099534] [2024-11-22 08:53:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:53:00,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:53:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:53:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:53:06,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:53:06,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426099534] [2024-11-22 08:53:06,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426099534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:53:06,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:53:06,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-22 08:53:06,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204092275] [2024-11-22 08:53:06,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:53:06,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 08:53:06,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:53:06,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 08:53:06,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-11-22 08:53:06,235 INFO L87 Difference]: Start difference. First operand 185 states and 295 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:53:07,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:53:07,598 INFO L93 Difference]: Finished difference Result 280 states and 415 transitions. [2024-11-22 08:53:07,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 08:53:07,599 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-22 08:53:07,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:53:07,601 INFO L225 Difference]: With dead ends: 280 [2024-11-22 08:53:07,601 INFO L226 Difference]: Without dead ends: 278 [2024-11-22 08:53:07,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-22 08:53:07,603 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 233 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 08:53:07,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1365 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 08:53:07,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-22 08:53:07,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 193. [2024-11-22 08:53:07,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 142 states have (on average 1.4929577464788732) internal successors, (212), 143 states have internal predecessors, (212), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-22 08:53:07,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 308 transitions. [2024-11-22 08:53:07,618 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 308 transitions. Word has length 270 [2024-11-22 08:53:07,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:53:07,619 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 308 transitions. [2024-11-22 08:53:07,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:53:07,619 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 308 transitions. [2024-11-22 08:53:07,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:53:07,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:53:07,621 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:53:07,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 08:53:07,621 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:53:07,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:53:07,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1563311509, now seen corresponding path program 1 times [2024-11-22 08:53:07,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:53:07,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307346791] [2024-11-22 08:53:07,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:53:07,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:53:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:53:11,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:53:11,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:53:11,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307346791] [2024-11-22 08:53:11,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307346791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:53:11,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:53:11,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 08:53:11,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144814411] [2024-11-22 08:53:11,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:53:11,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 08:53:11,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:53:11,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 08:53:11,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-22 08:53:11,740 INFO L87 Difference]: Start difference. First operand 193 states and 308 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:53:12,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:53:12,469 INFO L93 Difference]: Finished difference Result 278 states and 413 transitions. [2024-11-22 08:53:12,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 08:53:12,470 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-22 08:53:12,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:53:12,475 INFO L225 Difference]: With dead ends: 278 [2024-11-22 08:53:12,475 INFO L226 Difference]: Without dead ends: 276 [2024-11-22 08:53:12,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2024-11-22 08:53:12,476 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 223 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 08:53:12,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1321 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 08:53:12,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-22 08:53:12,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 189. [2024-11-22 08:53:12,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 138 states have (on average 1.4927536231884058) internal successors, (206), 139 states have internal predecessors, (206), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-22 08:53:12,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 302 transitions. [2024-11-22 08:53:12,513 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 302 transitions. Word has length 270 [2024-11-22 08:53:12,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:53:12,514 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 302 transitions. [2024-11-22 08:53:12,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:53:12,514 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 302 transitions. [2024-11-22 08:53:12,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:53:12,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:53:12,515 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:53:12,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 08:53:12,516 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:53:12,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:53:12,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1454269037, now seen corresponding path program 1 times [2024-11-22 08:53:12,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:53:12,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072967658] [2024-11-22 08:53:12,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:53:12,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:53:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:53:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:53:12,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:53:12,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072967658] [2024-11-22 08:53:12,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072967658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:53:12,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:53:12,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 08:53:12,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391956029] [2024-11-22 08:53:12,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:53:12,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 08:53:12,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:53:12,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 08:53:12,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:53:12,594 INFO L87 Difference]: Start difference. First operand 189 states and 302 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:53:12,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:53:12,671 INFO L93 Difference]: Finished difference Result 521 states and 836 transitions. [2024-11-22 08:53:12,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 08:53:12,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-22 08:53:12,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:53:12,674 INFO L225 Difference]: With dead ends: 521 [2024-11-22 08:53:12,677 INFO L226 Difference]: Without dead ends: 335 [2024-11-22 08:53:12,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:53:12,679 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 162 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 08:53:12,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 492 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 08:53:12,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-22 08:53:12,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 333. [2024-11-22 08:53:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 232 states have (on average 1.4396551724137931) internal successors, (334), 234 states have internal predecessors, (334), 96 states have call successors, (96), 4 states have call predecessors, (96), 4 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-22 08:53:12,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 526 transitions. [2024-11-22 08:53:12,725 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 526 transitions. Word has length 270 [2024-11-22 08:53:12,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:53:12,727 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 526 transitions. [2024-11-22 08:53:12,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:53:12,728 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 526 transitions. [2024-11-22 08:53:12,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:53:12,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:53:12,730 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:53:12,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 08:53:12,730 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:53:12,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:53:12,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2139633681, now seen corresponding path program 1 times [2024-11-22 08:53:12,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:53:12,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043231890] [2024-11-22 08:53:12,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:53:12,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:53:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:53:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:53:12,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:53:12,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043231890] [2024-11-22 08:53:12,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043231890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:53:12,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:53:12,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 08:53:12,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96391311] [2024-11-22 08:53:12,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:53:12,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 08:53:12,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:53:12,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 08:53:12,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 08:53:12,883 INFO L87 Difference]: Start difference. First operand 333 states and 526 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:53:13,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:53:13,143 INFO L93 Difference]: Finished difference Result 965 states and 1510 transitions. [2024-11-22 08:53:13,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 08:53:13,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-22 08:53:13,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:53:13,149 INFO L225 Difference]: With dead ends: 965 [2024-11-22 08:53:13,149 INFO L226 Difference]: Without dead ends: 635 [2024-11-22 08:53:13,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 08:53:13,151 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 127 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 08:53:13,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 564 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 08:53:13,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2024-11-22 08:53:13,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 584. [2024-11-22 08:53:13,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 387 states have (on average 1.4108527131782946) internal successors, (546), 390 states have internal predecessors, (546), 188 states have call successors, (188), 8 states have call predecessors, (188), 8 states have return successors, (188), 185 states have call predecessors, (188), 188 states have call successors, (188) [2024-11-22 08:53:13,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 922 transitions. [2024-11-22 08:53:13,228 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 922 transitions. Word has length 270 [2024-11-22 08:53:13,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:53:13,229 INFO L471 AbstractCegarLoop]: Abstraction has 584 states and 922 transitions. [2024-11-22 08:53:13,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:53:13,229 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 922 transitions. [2024-11-22 08:53:13,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:53:13,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:53:13,231 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:53:13,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 08:53:13,232 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:53:13,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:53:13,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1881468243, now seen corresponding path program 1 times [2024-11-22 08:53:13,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:53:13,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525087554] [2024-11-22 08:53:13,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:53:13,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:53:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:53:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:53:17,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:53:17,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525087554] [2024-11-22 08:53:17,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525087554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:53:17,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:53:17,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 08:53:17,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346832878] [2024-11-22 08:53:17,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:53:17,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 08:53:17,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:53:17,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 08:53:17,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-22 08:53:17,746 INFO L87 Difference]: Start difference. First operand 584 states and 922 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:53:19,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:53:19,251 INFO L93 Difference]: Finished difference Result 753 states and 1130 transitions. [2024-11-22 08:53:19,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 08:53:19,252 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-22 08:53:19,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:53:19,260 INFO L225 Difference]: With dead ends: 753 [2024-11-22 08:53:19,264 INFO L226 Difference]: Without dead ends: 751 [2024-11-22 08:53:19,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2024-11-22 08:53:19,268 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 481 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 08:53:19,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 1052 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 08:53:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2024-11-22 08:53:19,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 655. [2024-11-22 08:53:19,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 447 states have (on average 1.400447427293065) internal successors, (626), 452 states have internal predecessors, (626), 196 states have call successors, (196), 11 states have call predecessors, (196), 11 states have return successors, (196), 191 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-22 08:53:19,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1018 transitions. [2024-11-22 08:53:19,434 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1018 transitions. Word has length 270 [2024-11-22 08:53:19,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:53:19,436 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1018 transitions. [2024-11-22 08:53:19,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:53:19,439 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1018 transitions. [2024-11-22 08:53:19,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:53:19,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:53:19,441 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:53:19,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 08:53:19,442 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:53:19,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:53:19,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1883315285, now seen corresponding path program 1 times [2024-11-22 08:53:19,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:53:19,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065124042] [2024-11-22 08:53:19,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:53:19,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:53:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:53:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:53:22,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:53:22,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065124042] [2024-11-22 08:53:22,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065124042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:53:22,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:53:22,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 08:53:22,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651419864] [2024-11-22 08:53:22,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:53:22,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 08:53:22,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:53:22,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 08:53:22,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-11-22 08:53:22,181 INFO L87 Difference]: Start difference. First operand 655 states and 1018 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:53:23,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:53:23,267 INFO L93 Difference]: Finished difference Result 751 states and 1128 transitions. [2024-11-22 08:53:23,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 08:53:23,268 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-22 08:53:23,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:53:23,272 INFO L225 Difference]: With dead ends: 751 [2024-11-22 08:53:23,272 INFO L226 Difference]: Without dead ends: 749 [2024-11-22 08:53:23,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-22 08:53:23,273 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 381 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 08:53:23,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1101 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 08:53:23,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2024-11-22 08:53:23,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 655. [2024-11-22 08:53:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 447 states have (on average 1.400447427293065) internal successors, (626), 452 states have internal predecessors, (626), 196 states have call successors, (196), 11 states have call predecessors, (196), 11 states have return successors, (196), 191 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-22 08:53:23,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1018 transitions. [2024-11-22 08:53:23,335 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1018 transitions. Word has length 270 [2024-11-22 08:53:23,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:53:23,335 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1018 transitions. [2024-11-22 08:53:23,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:53:23,336 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1018 transitions. [2024-11-22 08:53:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:53:23,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:53:23,337 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:53:23,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 08:53:23,337 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:53:23,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:53:23,338 INFO L85 PathProgramCache]: Analyzing trace with hash 786393649, now seen corresponding path program 1 times [2024-11-22 08:53:23,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:53:23,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248106261] [2024-11-22 08:53:23,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:53:23,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:53:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:53:23,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:53:23,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:53:23,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248106261] [2024-11-22 08:53:23,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248106261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:53:23,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:53:23,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 08:53:23,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875362256] [2024-11-22 08:53:23,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:53:23,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 08:53:23,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:53:23,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 08:53:23,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 08:53:23,710 INFO L87 Difference]: Start difference. First operand 655 states and 1018 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-22 08:53:24,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:53:24,046 INFO L93 Difference]: Finished difference Result 1205 states and 1855 transitions. [2024-11-22 08:53:24,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 08:53:24,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 270 [2024-11-22 08:53:24,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:53:24,053 INFO L225 Difference]: With dead ends: 1205 [2024-11-22 08:53:24,055 INFO L226 Difference]: Without dead ends: 642 [2024-11-22 08:53:24,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-22 08:53:24,058 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 220 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 08:53:24,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 336 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 08:53:24,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2024-11-22 08:53:24,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 627. [2024-11-22 08:53:24,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 413 states have (on average 1.3486682808716708) internal successors, (557), 418 states have internal predecessors, (557), 200 states have call successors, (200), 13 states have call predecessors, (200), 13 states have return successors, (200), 195 states have call predecessors, (200), 200 states have call successors, (200) [2024-11-22 08:53:24,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 957 transitions. [2024-11-22 08:53:24,123 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 957 transitions. Word has length 270 [2024-11-22 08:53:24,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:53:24,123 INFO L471 AbstractCegarLoop]: Abstraction has 627 states and 957 transitions. [2024-11-22 08:53:24,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-22 08:53:24,124 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 957 transitions. [2024-11-22 08:53:24,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-22 08:53:24,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:53:24,125 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:53:24,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 08:53:24,125 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:53:24,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:53:24,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1626945710, now seen corresponding path program 1 times [2024-11-22 08:53:24,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:53:24,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860158393] [2024-11-22 08:53:24,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:53:24,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:53:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:53:29,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:53:29,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:53:29,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860158393] [2024-11-22 08:53:29,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860158393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:53:29,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:53:29,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-22 08:53:29,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155552890] [2024-11-22 08:53:29,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:53:29,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 08:53:29,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:53:29,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 08:53:29,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2024-11-22 08:53:29,634 INFO L87 Difference]: Start difference. First operand 627 states and 957 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:53:30,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:53:30,925 INFO L93 Difference]: Finished difference Result 1235 states and 1867 transitions. [2024-11-22 08:53:30,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 08:53:30,927 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 271 [2024-11-22 08:53:30,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:53:30,931 INFO L225 Difference]: With dead ends: 1235 [2024-11-22 08:53:30,931 INFO L226 Difference]: Without dead ends: 916 [2024-11-22 08:53:30,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2024-11-22 08:53:30,933 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 507 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 08:53:30,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 1174 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 08:53:30,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-22 08:53:30,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 671. [2024-11-22 08:53:30,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 459 states have (on average 1.3856209150326797) internal successors, (636), 463 states have internal predecessors, (636), 196 states have call successors, (196), 15 states have call predecessors, (196), 15 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-22 08:53:30,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1028 transitions. [2024-11-22 08:53:30,988 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1028 transitions. Word has length 271 [2024-11-22 08:53:30,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:53:30,989 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 1028 transitions. [2024-11-22 08:53:30,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:53:30,989 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1028 transitions. [2024-11-22 08:53:30,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-22 08:53:30,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:53:30,990 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:53:30,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 08:53:30,991 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:53:30,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:53:30,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1628792752, now seen corresponding path program 1 times [2024-11-22 08:53:30,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:53:30,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706499016] [2024-11-22 08:53:30,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:53:30,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:53:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat