./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label12.c -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 d0b5df85e0a9ddd1f309535c1c84b5e9767d041ee38e1a69151fb90b019fbb4f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 23:30:35,450 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 23:30:35,526 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 23:30:35,533 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 23:30:35,535 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 23:30:35,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 23:30:35,561 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 23:30:35,562 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 23:30:35,562 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 23:30:35,563 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 23:30:35,563 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 23:30:35,564 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 23:30:35,565 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 23:30:35,568 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 23:30:35,569 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 23:30:35,569 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 23:30:35,570 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 23:30:35,570 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 23:30:35,571 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 23:30:35,571 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 23:30:35,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 23:30:35,572 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 23:30:35,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 23:30:35,573 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 23:30:35,573 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 23:30:35,573 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 23:30:35,573 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 23:30:35,574 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 23:30:35,574 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 23:30:35,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 23:30:35,575 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 23:30:35,575 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 23:30:35,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:30:35,575 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 23:30:35,576 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 23:30:35,576 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 23:30:35,576 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 23:30:35,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 23:30:35,576 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 23:30:35,577 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 23:30:35,577 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 23:30:35,577 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 23:30:35,578 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0b5df85e0a9ddd1f309535c1c84b5e9767d041ee38e1a69151fb90b019fbb4f [2024-10-13 23:30:35,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 23:30:35,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 23:30:35,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 23:30:35,877 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 23:30:35,877 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 23:30:35,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label12.c [2024-10-13 23:30:37,409 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 23:30:37,836 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 23:30:37,838 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label12.c [2024-10-13 23:30:37,881 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ee24b928/7b7d5bbe15b2439bb0d8053fc00c822b/FLAG6b57f60b0 [2024-10-13 23:30:37,903 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ee24b928/7b7d5bbe15b2439bb0d8053fc00c822b [2024-10-13 23:30:37,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 23:30:37,908 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 23:30:37,910 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 23:30:37,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 23:30:37,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 23:30:37,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:30:37" (1/1) ... [2024-10-13 23:30:37,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b00fe84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:30:37, skipping insertion in model container [2024-10-13 23:30:37,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:30:37" (1/1) ... [2024-10-13 23:30:38,086 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 23:30:38,349 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label12.c[7173,7186] [2024-10-13 23:30:39,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:30:39,091 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 23:30:39,123 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label12.c[7173,7186] [2024-10-13 23:30:39,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:30:39,523 INFO L204 MainTranslator]: Completed translation [2024-10-13 23:30:39,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:30:39 WrapperNode [2024-10-13 23:30:39,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 23:30:39,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 23:30:39,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 23:30:39,525 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 23:30:39,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:30:39" (1/1) ... [2024-10-13 23:30:39,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:30:39" (1/1) ... [2024-10-13 23:30:39,895 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-10-13 23:30:39,895 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 23:30:39,896 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 23:30:39,896 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 23:30:39,896 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 23:30:39,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:30:39" (1/1) ... [2024-10-13 23:30:39,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:30:39" (1/1) ... [2024-10-13 23:30:39,956 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:30:39" (1/1) ... [2024-10-13 23:30:40,199 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 23:30:40,199 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:30:39" (1/1) ... [2024-10-13 23:30:40,200 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:30:39" (1/1) ... [2024-10-13 23:30:40,485 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:30:39" (1/1) ... [2024-10-13 23:30:40,525 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:30:39" (1/1) ... [2024-10-13 23:30:40,576 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:30:39" (1/1) ... [2024-10-13 23:30:40,594 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:30:39" (1/1) ... [2024-10-13 23:30:40,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 23:30:40,692 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 23:30:40,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 23:30:40,694 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 23:30:40,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:30:39" (1/1) ... [2024-10-13 23:30:40,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:30:40,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:30:40,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 23:30:40,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 23:30:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 23:30:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 23:30:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 23:30:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 23:30:40,864 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 23:30:40,869 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 23:30:45,088 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-10-13 23:30:45,089 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 23:30:45,160 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 23:30:45,164 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 23:30:45,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:30:45 BoogieIcfgContainer [2024-10-13 23:30:45,164 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 23:30:45,166 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 23:30:45,167 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 23:30:45,171 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 23:30:45,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:30:37" (1/3) ... [2024-10-13 23:30:45,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627fef77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:30:45, skipping insertion in model container [2024-10-13 23:30:45,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:30:39" (2/3) ... [2024-10-13 23:30:45,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627fef77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:30:45, skipping insertion in model container [2024-10-13 23:30:45,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:30:45" (3/3) ... [2024-10-13 23:30:45,175 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label12.c [2024-10-13 23:30:45,191 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 23:30:45,192 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 23:30:45,276 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 23:30:45,282 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;@40e3689f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 23:30:45,283 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 23:30:45,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:30:45,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-13 23:30:45,299 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:30:45,300 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:30:45,301 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:30:45,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:30:45,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1152041429, now seen corresponding path program 1 times [2024-10-13 23:30:45,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:30:45,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702807996] [2024-10-13 23:30:45,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:30:45,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:30:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:30:45,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:30:45,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:30:45,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702807996] [2024-10-13 23:30:45,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702807996] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:30:45,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:30:45,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:30:45,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615193440] [2024-10-13 23:30:45,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:30:45,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 23:30:45,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:30:45,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 23:30:45,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 23:30:45,572 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:30:45,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:30:45,674 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2024-10-13 23:30:45,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 23:30:45,680 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-10-13 23:30:45,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:30:45,703 INFO L225 Difference]: With dead ends: 1511 [2024-10-13 23:30:45,703 INFO L226 Difference]: Without dead ends: 754 [2024-10-13 23:30:45,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 23:30:45,716 INFO L432 NwaCegarLoop]: 1438 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:30:45,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 23:30:45,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-10-13 23:30:45,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2024-10-13 23:30:45,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:30:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2024-10-13 23:30:45,804 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 57 [2024-10-13 23:30:45,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:30:45,804 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2024-10-13 23:30:45,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:30:45,805 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2024-10-13 23:30:45,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-13 23:30:45,806 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:30:45,806 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:30:45,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 23:30:45,807 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:30:45,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:30:45,808 INFO L85 PathProgramCache]: Analyzing trace with hash -365892839, now seen corresponding path program 1 times [2024-10-13 23:30:45,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:30:45,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985798856] [2024-10-13 23:30:45,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:30:45,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:30:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:30:46,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:30:46,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:30:46,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985798856] [2024-10-13 23:30:46,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985798856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:30:46,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:30:46,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:30:46,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815241775] [2024-10-13 23:30:46,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:30:46,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:30:46,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:30:46,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:30:46,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:30:46,182 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:30:52,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:30:52,243 INFO L93 Difference]: Finished difference Result 3009 states and 5747 transitions. [2024-10-13 23:30:52,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:30:52,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-10-13 23:30:52,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:30:52,258 INFO L225 Difference]: With dead ends: 3009 [2024-10-13 23:30:52,258 INFO L226 Difference]: Without dead ends: 2256 [2024-10-13 23:30:52,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 23:30:52,261 INFO L432 NwaCegarLoop]: 673 mSDtfsCounter, 2195 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5355 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 6508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:30:52,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2195 Valid, 691 Invalid, 6508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5355 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-10-13 23:30:52,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2024-10-13 23:30:52,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2256. [2024-10-13 23:30:52,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.5751662971175167) internal successors, (3552), 2255 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:30:52,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 3552 transitions. [2024-10-13 23:30:52,335 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 3552 transitions. Word has length 57 [2024-10-13 23:30:52,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:30:52,335 INFO L471 AbstractCegarLoop]: Abstraction has 2256 states and 3552 transitions. [2024-10-13 23:30:52,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:30:52,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 3552 transitions. [2024-10-13 23:30:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-13 23:30:52,339 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:30:52,340 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:30:52,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 23:30:52,341 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:30:52,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:30:52,342 INFO L85 PathProgramCache]: Analyzing trace with hash 2138542314, now seen corresponding path program 1 times [2024-10-13 23:30:52,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:30:52,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695422038] [2024-10-13 23:30:52,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:30:52,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:30:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:30:52,765 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:30:52,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:30:52,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695422038] [2024-10-13 23:30:52,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695422038] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:30:52,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:30:52,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:30:52,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389789210] [2024-10-13 23:30:52,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:30:52,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:30:52,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:30:52,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:30:52,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:30:52,768 INFO L87 Difference]: Start difference. First operand 2256 states and 3552 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:30:56,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:30:56,119 INFO L93 Difference]: Finished difference Result 6052 states and 9916 transitions. [2024-10-13 23:30:56,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:30:56,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2024-10-13 23:30:56,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:30:56,135 INFO L225 Difference]: With dead ends: 6052 [2024-10-13 23:30:56,135 INFO L226 Difference]: Without dead ends: 3760 [2024-10-13 23:30:56,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:30:56,140 INFO L432 NwaCegarLoop]: 673 mSDtfsCounter, 705 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3098 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 3826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 3098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:30:56,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 687 Invalid, 3826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 3098 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-13 23:30:56,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3760 states. [2024-10-13 23:30:56,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3760 to 3758. [2024-10-13 23:30:56,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 3757 states have (on average 1.3681128560021294) internal successors, (5140), 3757 states have internal predecessors, (5140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:30:56,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 5140 transitions. [2024-10-13 23:30:56,213 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 5140 transitions. Word has length 128 [2024-10-13 23:30:56,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:30:56,215 INFO L471 AbstractCegarLoop]: Abstraction has 3758 states and 5140 transitions. [2024-10-13 23:30:56,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:30:56,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 5140 transitions. [2024-10-13 23:30:56,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-10-13 23:30:56,228 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:30:56,228 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:30:56,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 23:30:56,229 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:30:56,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:30:56,230 INFO L85 PathProgramCache]: Analyzing trace with hash -720191731, now seen corresponding path program 1 times [2024-10-13 23:30:56,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:30:56,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528624283] [2024-10-13 23:30:56,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:30:56,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:30:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:30:56,556 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-13 23:30:56,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:30:56,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528624283] [2024-10-13 23:30:56,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528624283] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:30:56,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:30:56,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:30:56,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949432400] [2024-10-13 23:30:56,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:30:56,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:30:56,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:30:56,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:30:56,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:30:56,562 INFO L87 Difference]: Start difference. First operand 3758 states and 5140 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:30:58,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:30:58,927 INFO L93 Difference]: Finished difference Result 9768 states and 13188 transitions. [2024-10-13 23:30:58,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:30:58,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2024-10-13 23:30:58,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:30:58,950 INFO L225 Difference]: With dead ends: 9768 [2024-10-13 23:30:58,950 INFO L226 Difference]: Without dead ends: 6011 [2024-10-13 23:30:58,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:30:58,959 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 2772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:30:58,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 425 Invalid, 2772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-13 23:30:58,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2024-10-13 23:30:59,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 6011. [2024-10-13 23:30:59,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6011 states, 6010 states have (on average 1.1750415973377704) internal successors, (7062), 6010 states have internal predecessors, (7062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:30:59,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6011 states to 6011 states and 7062 transitions. [2024-10-13 23:30:59,057 INFO L78 Accepts]: Start accepts. Automaton has 6011 states and 7062 transitions. Word has length 267 [2024-10-13 23:30:59,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:30:59,059 INFO L471 AbstractCegarLoop]: Abstraction has 6011 states and 7062 transitions. [2024-10-13 23:30:59,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:30:59,060 INFO L276 IsEmpty]: Start isEmpty. Operand 6011 states and 7062 transitions. [2024-10-13 23:30:59,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-10-13 23:30:59,064 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:30:59,064 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:30:59,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 23:30:59,065 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:30:59,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:30:59,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1039666680, now seen corresponding path program 1 times [2024-10-13 23:30:59,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:30:59,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983714202] [2024-10-13 23:30:59,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:30:59,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:30:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:30:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-13 23:30:59,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:30:59,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983714202] [2024-10-13 23:30:59,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983714202] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:30:59,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:30:59,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:30:59,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190829296] [2024-10-13 23:30:59,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:30:59,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:30:59,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:30:59,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:30:59,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:30:59,496 INFO L87 Difference]: Start difference. First operand 6011 states and 7062 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:02,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:31:02,464 INFO L93 Difference]: Finished difference Result 13562 states and 16587 transitions. [2024-10-13 23:31:02,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:31:02,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2024-10-13 23:31:02,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:31:02,488 INFO L225 Difference]: With dead ends: 13562 [2024-10-13 23:31:02,488 INFO L226 Difference]: Without dead ends: 8266 [2024-10-13 23:31:02,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:31:02,497 INFO L432 NwaCegarLoop]: 309 mSDtfsCounter, 850 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3409 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 3962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:31:02,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 323 Invalid, 3962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 3409 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-13 23:31:02,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8266 states. [2024-10-13 23:31:02,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8266 to 8264. [2024-10-13 23:31:02,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8264 states, 8263 states have (on average 1.165920367905119) internal successors, (9634), 8263 states have internal predecessors, (9634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8264 states to 8264 states and 9634 transitions. [2024-10-13 23:31:02,615 INFO L78 Accepts]: Start accepts. Automaton has 8264 states and 9634 transitions. Word has length 269 [2024-10-13 23:31:02,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:31:02,616 INFO L471 AbstractCegarLoop]: Abstraction has 8264 states and 9634 transitions. [2024-10-13 23:31:02,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:02,617 INFO L276 IsEmpty]: Start isEmpty. Operand 8264 states and 9634 transitions. [2024-10-13 23:31:02,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2024-10-13 23:31:02,622 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:31:02,622 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:31:02,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 23:31:02,622 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:31:02,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:31:02,624 INFO L85 PathProgramCache]: Analyzing trace with hash 975240308, now seen corresponding path program 1 times [2024-10-13 23:31:02,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:31:02,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922762789] [2024-10-13 23:31:02,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:31:02,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:31:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:31:03,396 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-13 23:31:03,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:31:03,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922762789] [2024-10-13 23:31:03,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922762789] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:31:03,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:31:03,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:31:03,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149944847] [2024-10-13 23:31:03,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:31:03,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:31:03,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:31:03,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:31:03,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:31:03,402 INFO L87 Difference]: Start difference. First operand 8264 states and 9634 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:06,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:31:06,260 INFO L93 Difference]: Finished difference Result 18029 states and 21665 transitions. [2024-10-13 23:31:06,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:31:06,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 346 [2024-10-13 23:31:06,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:31:06,293 INFO L225 Difference]: With dead ends: 18029 [2024-10-13 23:31:06,293 INFO L226 Difference]: Without dead ends: 10517 [2024-10-13 23:31:06,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:31:06,304 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 825 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2030 mSolverCounterSat, 989 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 3019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 989 IncrementalHoareTripleChecker+Valid, 2030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:31:06,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 137 Invalid, 3019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [989 Valid, 2030 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-13 23:31:06,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10517 states. [2024-10-13 23:31:06,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10517 to 10517. [2024-10-13 23:31:06,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10517 states, 10516 states have (on average 1.1934195511601369) internal successors, (12550), 10516 states have internal predecessors, (12550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:06,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10517 states to 10517 states and 12550 transitions. [2024-10-13 23:31:06,472 INFO L78 Accepts]: Start accepts. Automaton has 10517 states and 12550 transitions. Word has length 346 [2024-10-13 23:31:06,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:31:06,472 INFO L471 AbstractCegarLoop]: Abstraction has 10517 states and 12550 transitions. [2024-10-13 23:31:06,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:06,473 INFO L276 IsEmpty]: Start isEmpty. Operand 10517 states and 12550 transitions. [2024-10-13 23:31:06,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2024-10-13 23:31:06,478 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:31:06,479 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:31:06,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 23:31:06,479 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:31:06,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:31:06,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2091351240, now seen corresponding path program 1 times [2024-10-13 23:31:06,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:31:06,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931413699] [2024-10-13 23:31:06,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:31:06,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:31:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:31:06,829 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-13 23:31:06,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:31:06,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931413699] [2024-10-13 23:31:06,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931413699] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:31:06,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:31:06,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:31:06,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629558905] [2024-10-13 23:31:06,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:31:06,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:31:06,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:31:06,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:31:06,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:31:06,833 INFO L87 Difference]: Start difference. First operand 10517 states and 12550 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:09,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:31:09,145 INFO L93 Difference]: Finished difference Result 22535 states and 27263 transitions. [2024-10-13 23:31:09,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:31:09,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 370 [2024-10-13 23:31:09,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:31:09,166 INFO L225 Difference]: With dead ends: 22535 [2024-10-13 23:31:09,167 INFO L226 Difference]: Without dead ends: 12770 [2024-10-13 23:31:09,177 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 [2024-10-13 23:31:09,178 INFO L432 NwaCegarLoop]: 1194 mSDtfsCounter, 680 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-13 23:31:09,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1201 Invalid, 2548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-13 23:31:09,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12770 states. [2024-10-13 23:31:09,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12770 to 12770. [2024-10-13 23:31:09,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12770 states, 12769 states have (on average 1.1820816038844075) internal successors, (15094), 12769 states have internal predecessors, (15094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:09,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12770 states to 12770 states and 15094 transitions. [2024-10-13 23:31:09,347 INFO L78 Accepts]: Start accepts. Automaton has 12770 states and 15094 transitions. Word has length 370 [2024-10-13 23:31:09,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:31:09,348 INFO L471 AbstractCegarLoop]: Abstraction has 12770 states and 15094 transitions. [2024-10-13 23:31:09,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:09,349 INFO L276 IsEmpty]: Start isEmpty. Operand 12770 states and 15094 transitions. [2024-10-13 23:31:09,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-10-13 23:31:09,355 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:31:09,356 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:31:09,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 23:31:09,356 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:31:09,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:31:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash -32624525, now seen corresponding path program 1 times [2024-10-13 23:31:09,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:31:09,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264324624] [2024-10-13 23:31:09,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:31:09,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:31:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:31:09,646 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-13 23:31:09,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:31:09,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264324624] [2024-10-13 23:31:09,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264324624] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:31:09,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:31:09,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:31:09,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576275472] [2024-10-13 23:31:09,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:31:09,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:31:09,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:31:09,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:31:09,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:31:09,649 INFO L87 Difference]: Start difference. First operand 12770 states and 15094 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:12,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:31:12,367 INFO L93 Difference]: Finished difference Result 35302 states and 42252 transitions. [2024-10-13 23:31:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:31:12,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 384 [2024-10-13 23:31:12,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:31:12,410 INFO L225 Difference]: With dead ends: 35302 [2024-10-13 23:31:12,411 INFO L226 Difference]: Without dead ends: 23284 [2024-10-13 23:31:12,428 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 [2024-10-13 23:31:12,429 INFO L432 NwaCegarLoop]: 1256 mSDtfsCounter, 635 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2631 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 3022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 2631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:31:12,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1263 Invalid, 3022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 2631 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-13 23:31:12,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23284 states. [2024-10-13 23:31:12,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23284 to 21031. [2024-10-13 23:31:12,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21031 states, 21030 states have (on average 1.1846885401806941) internal successors, (24914), 21030 states have internal predecessors, (24914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21031 states to 21031 states and 24914 transitions. [2024-10-13 23:31:12,698 INFO L78 Accepts]: Start accepts. Automaton has 21031 states and 24914 transitions. Word has length 384 [2024-10-13 23:31:12,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:31:12,699 INFO L471 AbstractCegarLoop]: Abstraction has 21031 states and 24914 transitions. [2024-10-13 23:31:12,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:12,699 INFO L276 IsEmpty]: Start isEmpty. Operand 21031 states and 24914 transitions. [2024-10-13 23:31:12,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-10-13 23:31:12,703 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:31:12,704 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:31:12,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 23:31:12,705 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:31:12,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:31:12,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1608319554, now seen corresponding path program 1 times [2024-10-13 23:31:12,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:31:12,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305934792] [2024-10-13 23:31:12,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:31:12,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:31:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:31:13,311 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 101 proven. 66 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-13 23:31:13,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:31:13,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305934792] [2024-10-13 23:31:13,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305934792] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:31:13,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003885150] [2024-10-13 23:31:13,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:31:13,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:31:13,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:31:13,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:31:13,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 23:31:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:31:13,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:31:13,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:31:13,630 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-13 23:31:13,630 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:31:13,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003885150] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:31:13,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:31:13,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-13 23:31:13,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930034129] [2024-10-13 23:31:13,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:31:13,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:31:13,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:31:13,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:31:13,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:31:13,633 INFO L87 Difference]: Start difference. First operand 21031 states and 24914 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:16,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:31:16,195 INFO L93 Difference]: Finished difference Result 57081 states and 68486 transitions. [2024-10-13 23:31:16,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:31:16,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 385 [2024-10-13 23:31:16,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:31:16,250 INFO L225 Difference]: With dead ends: 57081 [2024-10-13 23:31:16,250 INFO L226 Difference]: Without dead ends: 36802 [2024-10-13 23:31:16,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:31:16,274 INFO L432 NwaCegarLoop]: 1335 mSDtfsCounter, 716 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:31:16,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1342 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-13 23:31:16,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36802 states. [2024-10-13 23:31:16,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36802 to 35300. [2024-10-13 23:31:16,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35300 states, 35299 states have (on average 1.1462930961217033) internal successors, (40463), 35299 states have internal predecessors, (40463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:16,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35300 states to 35300 states and 40463 transitions. [2024-10-13 23:31:16,951 INFO L78 Accepts]: Start accepts. Automaton has 35300 states and 40463 transitions. Word has length 385 [2024-10-13 23:31:16,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:31:16,952 INFO L471 AbstractCegarLoop]: Abstraction has 35300 states and 40463 transitions. [2024-10-13 23:31:16,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:16,952 INFO L276 IsEmpty]: Start isEmpty. Operand 35300 states and 40463 transitions. [2024-10-13 23:31:16,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-10-13 23:31:16,957 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:31:16,957 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:31:16,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 23:31:17,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:31:17,162 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:31:17,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:31:17,163 INFO L85 PathProgramCache]: Analyzing trace with hash -611309079, now seen corresponding path program 1 times [2024-10-13 23:31:17,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:31:17,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692964168] [2024-10-13 23:31:17,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:31:17,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:31:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:31:18,226 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 351 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:31:18,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:31:18,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692964168] [2024-10-13 23:31:18,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692964168] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:31:18,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271346874] [2024-10-13 23:31:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:31:18,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:31:18,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:31:18,229 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:31:18,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 23:31:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:31:18,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 23:31:18,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:31:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-10-13 23:31:19,051 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:31:19,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271346874] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:31:19,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:31:19,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-13 23:31:19,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808451635] [2024-10-13 23:31:19,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:31:19,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:31:19,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:31:19,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:31:19,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:31:19,054 INFO L87 Difference]: Start difference. First operand 35300 states and 40463 transitions. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:23,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:31:23,608 INFO L93 Difference]: Finished difference Result 104396 states and 120840 transitions. [2024-10-13 23:31:23,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:31:23,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 388 [2024-10-13 23:31:23,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:31:23,705 INFO L225 Difference]: With dead ends: 104396 [2024-10-13 23:31:23,705 INFO L226 Difference]: Without dead ends: 69848 [2024-10-13 23:31:23,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:31:23,729 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1849 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4638 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 5255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 4638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-10-13 23:31:23,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1849 Valid, 27 Invalid, 5255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 4638 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-10-13 23:31:23,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69848 states. [2024-10-13 23:31:24,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69848 to 69846. [2024-10-13 23:31:24,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69846 states, 69845 states have (on average 1.1525807144391151) internal successors, (80502), 69845 states have internal predecessors, (80502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:24,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69846 states to 69846 states and 80502 transitions. [2024-10-13 23:31:24,404 INFO L78 Accepts]: Start accepts. Automaton has 69846 states and 80502 transitions. Word has length 388 [2024-10-13 23:31:24,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:31:24,405 INFO L471 AbstractCegarLoop]: Abstraction has 69846 states and 80502 transitions. [2024-10-13 23:31:24,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:24,405 INFO L276 IsEmpty]: Start isEmpty. Operand 69846 states and 80502 transitions. [2024-10-13 23:31:24,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2024-10-13 23:31:24,413 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:31:24,413 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:31:24,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 23:31:24,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-13 23:31:24,614 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:31:24,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:31:24,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1487480358, now seen corresponding path program 1 times [2024-10-13 23:31:24,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:31:24,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797412592] [2024-10-13 23:31:24,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:31:24,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:31:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:31:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 362 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-10-13 23:31:25,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:31:25,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797412592] [2024-10-13 23:31:25,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797412592] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:31:25,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:31:25,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:31:25,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455863294] [2024-10-13 23:31:25,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:31:25,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:31:25,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:31:25,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:31:25,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:31:25,122 INFO L87 Difference]: Start difference. First operand 69846 states and 80502 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:28,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:31:28,268 INFO L93 Difference]: Finished difference Result 138940 states and 160247 transitions. [2024-10-13 23:31:28,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:31:28,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 417 [2024-10-13 23:31:28,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:31:28,345 INFO L225 Difference]: With dead ends: 138940 [2024-10-13 23:31:28,346 INFO L226 Difference]: Without dead ends: 69846 [2024-10-13 23:31:28,366 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 [2024-10-13 23:31:28,367 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 774 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 2892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 2167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:31:28,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 103 Invalid, 2892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 2167 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-13 23:31:28,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69846 states. [2024-10-13 23:31:29,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69846 to 69846. [2024-10-13 23:31:29,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69846 states, 69845 states have (on average 1.1406686233803423) internal successors, (79670), 69845 states have internal predecessors, (79670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:29,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69846 states to 69846 states and 79670 transitions. [2024-10-13 23:31:29,199 INFO L78 Accepts]: Start accepts. Automaton has 69846 states and 79670 transitions. Word has length 417 [2024-10-13 23:31:29,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:31:29,200 INFO L471 AbstractCegarLoop]: Abstraction has 69846 states and 79670 transitions. [2024-10-13 23:31:29,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:29,201 INFO L276 IsEmpty]: Start isEmpty. Operand 69846 states and 79670 transitions. [2024-10-13 23:31:29,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-10-13 23:31:29,213 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:31:29,213 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:31:29,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 23:31:29,214 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:31:29,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:31:29,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1478419937, now seen corresponding path program 1 times [2024-10-13 23:31:29,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:31:29,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193995950] [2024-10-13 23:31:29,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:31:29,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:31:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:31:29,884 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 601 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-10-13 23:31:29,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:31:29,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193995950] [2024-10-13 23:31:29,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193995950] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:31:29,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:31:29,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:31:29,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96936199] [2024-10-13 23:31:29,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:31:29,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:31:29,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:31:29,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:31:29,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:31:29,887 INFO L87 Difference]: Start difference. First operand 69846 states and 79670 transitions. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:32,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:31:32,782 INFO L93 Difference]: Finished difference Result 141193 states and 160850 transitions. [2024-10-13 23:31:32,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:31:32,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 468 [2024-10-13 23:31:32,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:31:32,862 INFO L225 Difference]: With dead ends: 141193 [2024-10-13 23:31:32,862 INFO L226 Difference]: Without dead ends: 72099 [2024-10-13 23:31:32,875 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 [2024-10-13 23:31:32,876 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 721 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:31:32,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 120 Invalid, 2958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-13 23:31:32,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72099 states. [2024-10-13 23:31:33,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72099 to 69846. [2024-10-13 23:31:33,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69846 states, 69845 states have (on average 1.1310616364807788) internal successors, (78999), 69845 states have internal predecessors, (78999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:33,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69846 states to 69846 states and 78999 transitions. [2024-10-13 23:31:33,878 INFO L78 Accepts]: Start accepts. Automaton has 69846 states and 78999 transitions. Word has length 468 [2024-10-13 23:31:33,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:31:33,879 INFO L471 AbstractCegarLoop]: Abstraction has 69846 states and 78999 transitions. [2024-10-13 23:31:33,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:33,879 INFO L276 IsEmpty]: Start isEmpty. Operand 69846 states and 78999 transitions. [2024-10-13 23:31:33,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-10-13 23:31:33,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:31:33,899 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:31:33,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 23:31:33,899 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:31:33,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:31:33,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1200536195, now seen corresponding path program 1 times [2024-10-13 23:31:33,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:31:33,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595760215] [2024-10-13 23:31:33,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:31:33,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:31:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:31:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 499 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-10-13 23:31:34,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:31:34,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595760215] [2024-10-13 23:31:34,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595760215] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:31:34,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:31:34,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:31:34,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633602049] [2024-10-13 23:31:34,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:31:34,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:31:34,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:31:34,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:31:34,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:31:34,348 INFO L87 Difference]: Start difference. First operand 69846 states and 78999 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:37,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:31:37,287 INFO L93 Difference]: Finished difference Result 172735 states and 196080 transitions. [2024-10-13 23:31:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:31:37,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 479 [2024-10-13 23:31:37,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:31:37,421 INFO L225 Difference]: With dead ends: 172735 [2024-10-13 23:31:37,422 INFO L226 Difference]: Without dead ends: 103641 [2024-10-13 23:31:37,452 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 [2024-10-13 23:31:37,453 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 669 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2478 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 2478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:31:37,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 340 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 2478 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-13 23:31:37,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103641 states. [2024-10-13 23:31:38,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103641 to 101388. [2024-10-13 23:31:38,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101388 states, 101387 states have (on average 1.1290204858611064) internal successors, (114468), 101387 states have internal predecessors, (114468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:38,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101388 states to 101388 states and 114468 transitions. [2024-10-13 23:31:38,865 INFO L78 Accepts]: Start accepts. Automaton has 101388 states and 114468 transitions. Word has length 479 [2024-10-13 23:31:38,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:31:38,865 INFO L471 AbstractCegarLoop]: Abstraction has 101388 states and 114468 transitions. [2024-10-13 23:31:38,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:38,866 INFO L276 IsEmpty]: Start isEmpty. Operand 101388 states and 114468 transitions. [2024-10-13 23:31:38,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2024-10-13 23:31:38,877 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:31:38,877 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:31:38,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 23:31:38,878 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:31:38,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:31:38,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1455935259, now seen corresponding path program 1 times [2024-10-13 23:31:38,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:31:38,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257810969] [2024-10-13 23:31:38,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:31:38,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:31:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:31:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-10-13 23:31:39,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:31:39,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257810969] [2024-10-13 23:31:39,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257810969] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:31:39,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:31:39,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:31:39,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346259988] [2024-10-13 23:31:39,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:31:39,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:31:39,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:31:39,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:31:39,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:31:39,458 INFO L87 Difference]: Start difference. First operand 101388 states and 114468 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:42,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:31:42,699 INFO L93 Difference]: Finished difference Result 247084 states and 282135 transitions. [2024-10-13 23:31:42,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:31:42,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 492 [2024-10-13 23:31:42,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:31:42,888 INFO L225 Difference]: With dead ends: 247084 [2024-10-13 23:31:42,888 INFO L226 Difference]: Without dead ends: 146448 [2024-10-13 23:31:42,955 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 [2024-10-13 23:31:42,956 INFO L432 NwaCegarLoop]: 542 mSDtfsCounter, 729 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:31:42,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 549 Invalid, 2875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 2321 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-13 23:31:43,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146448 states. [2024-10-13 23:31:44,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146448 to 141191. [2024-10-13 23:31:44,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141191 states, 141190 states have (on average 1.1178837028118138) internal successors, (157834), 141190 states have internal predecessors, (157834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:45,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141191 states to 141191 states and 157834 transitions. [2024-10-13 23:31:45,115 INFO L78 Accepts]: Start accepts. Automaton has 141191 states and 157834 transitions. Word has length 492 [2024-10-13 23:31:45,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:31:45,115 INFO L471 AbstractCegarLoop]: Abstraction has 141191 states and 157834 transitions. [2024-10-13 23:31:45,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:45,120 INFO L276 IsEmpty]: Start isEmpty. Operand 141191 states and 157834 transitions. [2024-10-13 23:31:45,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2024-10-13 23:31:45,135 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:31:45,135 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:31:45,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 23:31:45,136 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:31:45,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:31:45,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1372630075, now seen corresponding path program 1 times [2024-10-13 23:31:45,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:31:45,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099659908] [2024-10-13 23:31:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:31:45,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:31:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:31:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2024-10-13 23:31:45,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:31:45,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099659908] [2024-10-13 23:31:45,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099659908] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:31:45,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:31:45,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:31:45,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948734025] [2024-10-13 23:31:45,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:31:45,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:31:45,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:31:45,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:31:45,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:31:45,413 INFO L87 Difference]: Start difference. First operand 141191 states and 157834 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:31:49,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:31:49,382 INFO L93 Difference]: Finished difference Result 368746 states and 414002 transitions. [2024-10-13 23:31:49,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:31:49,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 531 [2024-10-13 23:31:49,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:31:50,105 INFO L225 Difference]: With dead ends: 368746 [2024-10-13 23:31:50,105 INFO L226 Difference]: Without dead ends: 228307 [2024-10-13 23:31:50,140 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 [2024-10-13 23:31:50,140 INFO L432 NwaCegarLoop]: 927 mSDtfsCounter, 765 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 737 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 3017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 737 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:31:50,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 934 Invalid, 3017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [737 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-13 23:31:50,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228307 states. [2024-10-13 23:31:52,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228307 to 227556.