./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-63.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-63.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 577634e4ca5e5062d04a888d1f269694da9d1fc5e92895960c37cfcca177a593 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:30:48,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:30:49,011 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:30:49,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:30:49,020 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:30:49,051 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:30:49,053 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:30:49,054 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:30:49,054 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:30:49,055 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:30:49,055 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:30:49,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:30:49,056 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:30:49,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:30:49,057 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:30:49,059 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:30:49,060 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:30:49,060 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:30:49,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:30:49,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:30:49,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:30:49,065 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:30:49,065 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:30:49,066 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:30:49,066 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:30:49,066 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:30:49,066 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:30:49,066 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:30:49,067 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:30:49,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:30:49,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:30:49,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:30:49,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:30:49,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:30:49,068 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:30:49,068 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:30:49,068 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:30:49,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:30:49,069 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:30:49,069 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:30:49,069 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:30:49,070 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:30:49,071 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 577634e4ca5e5062d04a888d1f269694da9d1fc5e92895960c37cfcca177a593 [2024-11-18 23:30:49,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:30:49,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:30:49,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:30:49,333 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:30:49,334 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:30:49,335 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-63.i [2024-11-18 23:30:50,780 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:30:51,011 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:30:51,011 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-63.i [2024-11-18 23:30:51,020 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5b60802b/5b087e03ed6c4438b7242aeff2299517/FLAGe8a1f6099 [2024-11-18 23:30:51,035 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5b60802b/5b087e03ed6c4438b7242aeff2299517 [2024-11-18 23:30:51,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:30:51,039 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:30:51,040 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:30:51,040 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:30:51,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:30:51,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:30:51" (1/1) ... [2024-11-18 23:30:51,048 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2caff064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:51, skipping insertion in model container [2024-11-18 23:30:51,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:30:51" (1/1) ... [2024-11-18 23:30:51,085 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:30:51,247 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-63.i[916,929] [2024-11-18 23:30:51,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:30:51,368 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:30:51,382 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-63.i[916,929] [2024-11-18 23:30:51,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:30:51,438 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:30:51,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:51 WrapperNode [2024-11-18 23:30:51,439 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:30:51,440 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:30:51,440 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:30:51,440 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:30:51,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:51" (1/1) ... [2024-11-18 23:30:51,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:51" (1/1) ... [2024-11-18 23:30:51,521 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 212 [2024-11-18 23:30:51,521 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:30:51,522 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:30:51,522 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:30:51,523 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:30:51,534 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:51" (1/1) ... [2024-11-18 23:30:51,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:51" (1/1) ... [2024-11-18 23:30:51,542 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:51" (1/1) ... [2024-11-18 23:30:51,567 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 23:30:51,568 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:51" (1/1) ... [2024-11-18 23:30:51,568 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:51" (1/1) ... [2024-11-18 23:30:51,584 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:51" (1/1) ... [2024-11-18 23:30:51,588 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:51" (1/1) ... [2024-11-18 23:30:51,593 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:51" (1/1) ... [2024-11-18 23:30:51,595 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:51" (1/1) ... [2024-11-18 23:30:51,603 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:30:51,604 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:30:51,604 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:30:51,604 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:30:51,605 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:51" (1/1) ... [2024-11-18 23:30:51,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:30:51,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:30:51,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 23:30:51,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 23:30:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:30:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:30:51,685 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:30:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:30:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:30:51,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:30:51,762 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:30:51,764 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:30:52,229 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-18 23:30:52,230 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:30:52,244 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:30:52,245 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:30:52,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:30:52 BoogieIcfgContainer [2024-11-18 23:30:52,246 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:30:52,248 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:30:52,249 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:30:52,252 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:30:52,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:30:51" (1/3) ... [2024-11-18 23:30:52,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428bfbea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:30:52, skipping insertion in model container [2024-11-18 23:30:52,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:30:51" (2/3) ... [2024-11-18 23:30:52,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428bfbea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:30:52, skipping insertion in model container [2024-11-18 23:30:52,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:30:52" (3/3) ... [2024-11-18 23:30:52,257 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-63.i [2024-11-18 23:30:52,269 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:30:52,269 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:30:52,333 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:30:52,339 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;@4bd57f8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:30:52,339 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:30:52,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 67 states have internal predecessors, (98), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 23:30:52,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 23:30:52,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:52,355 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:52,355 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:52,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:52,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1070429098, now seen corresponding path program 1 times [2024-11-18 23:30:52,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:52,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030770777] [2024-11-18 23:30:52,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:52,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:52,924 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:30:52,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:52,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030770777] [2024-11-18 23:30:52,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030770777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:52,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:52,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:30:52,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064949393] [2024-11-18 23:30:52,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:52,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:30:52,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:52,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:30:52,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:30:52,958 INFO L87 Difference]: Start difference. First operand has 89 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 67 states have internal predecessors, (98), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:30:53,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:53,003 INFO L93 Difference]: Finished difference Result 170 states and 290 transitions. [2024-11-18 23:30:53,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:30:53,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 23:30:53,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:53,019 INFO L225 Difference]: With dead ends: 170 [2024-11-18 23:30:53,020 INFO L226 Difference]: Without dead ends: 84 [2024-11-18 23:30:53,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:30:53,027 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:53,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:30:53,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-18 23:30:53,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-18 23:30:53,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 62 states have internal predecessors, (86), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 23:30:53,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 126 transitions. [2024-11-18 23:30:53,077 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 126 transitions. Word has length 143 [2024-11-18 23:30:53,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:53,079 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 126 transitions. [2024-11-18 23:30:53,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:30:53,080 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 126 transitions. [2024-11-18 23:30:53,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 23:30:53,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:53,083 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:53,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 23:30:53,084 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:53,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:53,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1901089290, now seen corresponding path program 1 times [2024-11-18 23:30:53,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:53,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395163731] [2024-11-18 23:30:53,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:53,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:53,317 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:30:53,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:53,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395163731] [2024-11-18 23:30:53,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395163731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:53,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:53,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:30:53,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678948189] [2024-11-18 23:30:53,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:53,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:30:53,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:53,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:30:53,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:30:53,321 INFO L87 Difference]: Start difference. First operand 84 states and 126 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:30:53,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:53,389 INFO L93 Difference]: Finished difference Result 216 states and 323 transitions. [2024-11-18 23:30:53,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:30:53,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 23:30:53,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:53,392 INFO L225 Difference]: With dead ends: 216 [2024-11-18 23:30:53,393 INFO L226 Difference]: Without dead ends: 135 [2024-11-18 23:30:53,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:30:53,395 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 74 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:53,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 231 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:30:53,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-18 23:30:53,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 132. [2024-11-18 23:30:53,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 101 states have (on average 1.386138613861386) internal successors, (140), 102 states have internal predecessors, (140), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-18 23:30:53,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 196 transitions. [2024-11-18 23:30:53,416 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 196 transitions. Word has length 143 [2024-11-18 23:30:53,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:53,417 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 196 transitions. [2024-11-18 23:30:53,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:30:53,417 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 196 transitions. [2024-11-18 23:30:53,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 23:30:53,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:53,421 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:53,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:30:53,422 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:53,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:53,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1940507320, now seen corresponding path program 1 times [2024-11-18 23:30:53,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:53,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314860425] [2024-11-18 23:30:53,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:53,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:30:53,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:53,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314860425] [2024-11-18 23:30:53,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314860425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:53,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:53,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:30:53,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163392432] [2024-11-18 23:30:53,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:53,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:30:53,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:53,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:30:53,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:30:53,932 INFO L87 Difference]: Start difference. First operand 132 states and 196 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:30:54,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:54,125 INFO L93 Difference]: Finished difference Result 379 states and 563 transitions. [2024-11-18 23:30:54,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:30:54,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 23:30:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:54,133 INFO L225 Difference]: With dead ends: 379 [2024-11-18 23:30:54,134 INFO L226 Difference]: Without dead ends: 250 [2024-11-18 23:30:54,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:30:54,141 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 90 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:54,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 350 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:30:54,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-18 23:30:54,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 188. [2024-11-18 23:30:54,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 135 states have (on average 1.3333333333333333) internal successors, (180), 136 states have internal predecessors, (180), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 23:30:54,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 276 transitions. [2024-11-18 23:30:54,185 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 276 transitions. Word has length 143 [2024-11-18 23:30:54,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:54,186 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 276 transitions. [2024-11-18 23:30:54,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:30:54,186 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 276 transitions. [2024-11-18 23:30:54,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 23:30:54,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:54,191 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:30:54,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:30:54,192 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:54,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:54,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1721652602, now seen corresponding path program 1 times [2024-11-18 23:30:54,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:54,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197650862] [2024-11-18 23:30:54,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:54,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:30:59,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:59,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197650862] [2024-11-18 23:30:59,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197650862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:59,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:59,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 23:30:59,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100017363] [2024-11-18 23:30:59,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:59,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 23:30:59,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:59,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 23:30:59,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-18 23:30:59,602 INFO L87 Difference]: Start difference. First operand 188 states and 276 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:00,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:00,883 INFO L93 Difference]: Finished difference Result 521 states and 760 transitions. [2024-11-18 23:31:00,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 23:31:00,884 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 23:31:00,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:00,887 INFO L225 Difference]: With dead ends: 521 [2024-11-18 23:31:00,887 INFO L226 Difference]: Without dead ends: 392 [2024-11-18 23:31:00,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2024-11-18 23:31:00,890 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 770 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:00,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 841 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 23:31:00,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-18 23:31:00,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 213. [2024-11-18 23:31:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 160 states have (on average 1.3625) internal successors, (218), 161 states have internal predecessors, (218), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 23:31:00,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 314 transitions. [2024-11-18 23:31:00,930 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 314 transitions. Word has length 143 [2024-11-18 23:31:00,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:00,931 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 314 transitions. [2024-11-18 23:31:00,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:00,932 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 314 transitions. [2024-11-18 23:31:00,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 23:31:00,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:00,934 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:00,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:31:00,934 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:00,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:00,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1463487164, now seen corresponding path program 1 times [2024-11-18 23:31:00,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:00,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33799591] [2024-11-18 23:31:00,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:00,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:31:08,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:08,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33799591] [2024-11-18 23:31:08,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33799591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:08,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:08,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 23:31:08,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557753157] [2024-11-18 23:31:08,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:08,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 23:31:08,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:08,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 23:31:08,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-18 23:31:08,831 INFO L87 Difference]: Start difference. First operand 213 states and 314 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:11,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:11,279 INFO L93 Difference]: Finished difference Result 682 states and 991 transitions. [2024-11-18 23:31:11,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 23:31:11,279 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 23:31:11,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:11,285 INFO L225 Difference]: With dead ends: 682 [2024-11-18 23:31:11,285 INFO L226 Difference]: Without dead ends: 530 [2024-11-18 23:31:11,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2024-11-18 23:31:11,287 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 487 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:11,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 940 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 23:31:11,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-18 23:31:11,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 247. [2024-11-18 23:31:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 194 states have (on average 1.3865979381443299) internal successors, (269), 195 states have internal predecessors, (269), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 23:31:11,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 365 transitions. [2024-11-18 23:31:11,317 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 365 transitions. Word has length 143 [2024-11-18 23:31:11,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:11,318 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 365 transitions. [2024-11-18 23:31:11,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:11,319 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 365 transitions. [2024-11-18 23:31:11,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 23:31:11,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:11,320 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:11,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:31:11,321 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:11,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:11,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1298950776, now seen corresponding path program 1 times [2024-11-18 23:31:11,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:11,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280703481] [2024-11-18 23:31:11,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:11,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:11,544 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:31:11,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:11,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280703481] [2024-11-18 23:31:11,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280703481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:11,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:11,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:31:11,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23398618] [2024-11-18 23:31:11,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:11,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:31:11,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:11,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:31:11,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:31:11,547 INFO L87 Difference]: Start difference. First operand 247 states and 365 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:11,681 INFO L93 Difference]: Finished difference Result 523 states and 773 transitions. [2024-11-18 23:31:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:31:11,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 23:31:11,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:11,684 INFO L225 Difference]: With dead ends: 523 [2024-11-18 23:31:11,684 INFO L226 Difference]: Without dead ends: 350 [2024-11-18 23:31:11,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:31:11,688 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 135 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:11,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 383 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:31:11,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-18 23:31:11,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 247. [2024-11-18 23:31:11,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 194 states have (on average 1.3762886597938144) internal successors, (267), 195 states have internal predecessors, (267), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 23:31:11,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 363 transitions. [2024-11-18 23:31:11,724 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 363 transitions. Word has length 143 [2024-11-18 23:31:11,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:11,725 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 363 transitions. [2024-11-18 23:31:11,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:11,726 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 363 transitions. [2024-11-18 23:31:11,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 23:31:11,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:11,728 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:11,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:31:11,728 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:11,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:11,729 INFO L85 PathProgramCache]: Analyzing trace with hash -934673012, now seen corresponding path program 1 times [2024-11-18 23:31:11,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:11,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137394744] [2024-11-18 23:31:11,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:11,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:11,972 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:31:11,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:11,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137394744] [2024-11-18 23:31:11,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137394744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:11,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:11,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:31:11,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249389815] [2024-11-18 23:31:11,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:11,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:31:11,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:11,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:31:11,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:31:11,974 INFO L87 Difference]: Start difference. First operand 247 states and 363 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:12,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:12,147 INFO L93 Difference]: Finished difference Result 523 states and 769 transitions. [2024-11-18 23:31:12,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:31:12,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 23:31:12,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:12,152 INFO L225 Difference]: With dead ends: 523 [2024-11-18 23:31:12,152 INFO L226 Difference]: Without dead ends: 350 [2024-11-18 23:31:12,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:31:12,153 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 142 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:12,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 455 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:31:12,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-18 23:31:12,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 254. [2024-11-18 23:31:12,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 201 states have (on average 1.3781094527363185) internal successors, (277), 202 states have internal predecessors, (277), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 23:31:12,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 373 transitions. [2024-11-18 23:31:12,182 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 373 transitions. Word has length 143 [2024-11-18 23:31:12,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:12,182 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 373 transitions. [2024-11-18 23:31:12,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:12,183 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 373 transitions. [2024-11-18 23:31:12,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 23:31:12,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:12,184 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:12,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 23:31:12,185 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:12,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:12,185 INFO L85 PathProgramCache]: Analyzing trace with hash -676507574, now seen corresponding path program 1 times [2024-11-18 23:31:12,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:12,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716691072] [2024-11-18 23:31:12,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:12,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:31:16,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:16,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716691072] [2024-11-18 23:31:16,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716691072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:16,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:16,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 23:31:16,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796375449] [2024-11-18 23:31:16,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:16,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 23:31:16,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:16,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 23:31:16,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:31:16,178 INFO L87 Difference]: Start difference. First operand 254 states and 373 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:16,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:16,903 INFO L93 Difference]: Finished difference Result 579 states and 847 transitions. [2024-11-18 23:31:16,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 23:31:16,903 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 23:31:16,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:16,905 INFO L225 Difference]: With dead ends: 579 [2024-11-18 23:31:16,906 INFO L226 Difference]: Without dead ends: 399 [2024-11-18 23:31:16,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:31:16,907 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 189 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:16,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 540 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 23:31:16,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-11-18 23:31:16,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 291. [2024-11-18 23:31:16,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 238 states have (on average 1.3907563025210083) internal successors, (331), 239 states have internal predecessors, (331), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 23:31:16,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 427 transitions. [2024-11-18 23:31:16,931 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 427 transitions. Word has length 143 [2024-11-18 23:31:16,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:16,931 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 427 transitions. [2024-11-18 23:31:16,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:16,932 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 427 transitions. [2024-11-18 23:31:16,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 23:31:16,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:16,933 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:16,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 23:31:16,933 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:16,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:16,934 INFO L85 PathProgramCache]: Analyzing trace with hash 34422909, now seen corresponding path program 1 times [2024-11-18 23:31:16,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:16,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71515224] [2024-11-18 23:31:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:16,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:17,037 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:31:17,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:17,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71515224] [2024-11-18 23:31:17,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71515224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:17,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:17,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:31:17,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055389296] [2024-11-18 23:31:17,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:17,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:31:17,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:17,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:31:17,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:31:17,041 INFO L87 Difference]: Start difference. First operand 291 states and 427 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:17,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:17,107 INFO L93 Difference]: Finished difference Result 685 states and 1004 transitions. [2024-11-18 23:31:17,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:31:17,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 23:31:17,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:17,110 INFO L225 Difference]: With dead ends: 685 [2024-11-18 23:31:17,110 INFO L226 Difference]: Without dead ends: 468 [2024-11-18 23:31:17,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:31:17,116 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 106 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:17,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 227 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:31:17,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-11-18 23:31:17,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 464. [2024-11-18 23:31:17,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 396 states have (on average 1.393939393939394) internal successors, (552), 399 states have internal predecessors, (552), 60 states have call successors, (60), 7 states have call predecessors, (60), 7 states have return successors, (60), 57 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-18 23:31:17,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 672 transitions. [2024-11-18 23:31:17,144 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 672 transitions. Word has length 144 [2024-11-18 23:31:17,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:17,148 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 672 transitions. [2024-11-18 23:31:17,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:17,148 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 672 transitions. [2024-11-18 23:31:17,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 23:31:17,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:17,151 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:17,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 23:31:17,151 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:17,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:17,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1305132620, now seen corresponding path program 1 times [2024-11-18 23:31:17,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:17,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073005118] [2024-11-18 23:31:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:17,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:17,319 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:31:17,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:17,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073005118] [2024-11-18 23:31:17,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073005118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:17,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:17,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:31:17,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586688128] [2024-11-18 23:31:17,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:17,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:31:17,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:17,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:31:17,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:31:17,320 INFO L87 Difference]: Start difference. First operand 464 states and 672 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:17,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:17,453 INFO L93 Difference]: Finished difference Result 964 states and 1392 transitions. [2024-11-18 23:31:17,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:31:17,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 23:31:17,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:17,457 INFO L225 Difference]: With dead ends: 964 [2024-11-18 23:31:17,458 INFO L226 Difference]: Without dead ends: 610 [2024-11-18 23:31:17,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:31:17,460 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 131 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:17,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 295 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:31:17,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2024-11-18 23:31:17,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 473. [2024-11-18 23:31:17,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 405 states have (on average 1.3950617283950617) internal successors, (565), 408 states have internal predecessors, (565), 60 states have call successors, (60), 7 states have call predecessors, (60), 7 states have return successors, (60), 57 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-18 23:31:17,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 685 transitions. [2024-11-18 23:31:17,490 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 685 transitions. Word has length 144 [2024-11-18 23:31:17,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:17,490 INFO L471 AbstractCegarLoop]: Abstraction has 473 states and 685 transitions. [2024-11-18 23:31:17,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:17,490 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 685 transitions. [2024-11-18 23:31:17,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 23:31:17,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:17,492 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:17,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 23:31:17,492 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:17,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:17,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1985190990, now seen corresponding path program 1 times [2024-11-18 23:31:17,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:17,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595079002] [2024-11-18 23:31:17,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:17,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:23,990 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:31:23,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:23,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595079002] [2024-11-18 23:31:23,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595079002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:23,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:23,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 23:31:23,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609062262] [2024-11-18 23:31:23,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:23,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 23:31:23,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:23,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 23:31:23,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-18 23:31:23,993 INFO L87 Difference]: Start difference. First operand 473 states and 685 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:26,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:26,053 INFO L93 Difference]: Finished difference Result 1210 states and 1736 transitions. [2024-11-18 23:31:26,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 23:31:26,054 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 23:31:26,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:26,058 INFO L225 Difference]: With dead ends: 1210 [2024-11-18 23:31:26,058 INFO L226 Difference]: Without dead ends: 847 [2024-11-18 23:31:26,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2024-11-18 23:31:26,060 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 479 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:26,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 837 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 23:31:26,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2024-11-18 23:31:26,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 475. [2024-11-18 23:31:26,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 407 states have (on average 1.3955773955773956) internal successors, (568), 410 states have internal predecessors, (568), 60 states have call successors, (60), 7 states have call predecessors, (60), 7 states have return successors, (60), 57 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-18 23:31:26,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 688 transitions. [2024-11-18 23:31:26,095 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 688 transitions. Word has length 144 [2024-11-18 23:31:26,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:26,095 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 688 transitions. [2024-11-18 23:31:26,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:26,095 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 688 transitions. [2024-11-18 23:31:26,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 23:31:26,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:26,098 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:26,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 23:31:26,099 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:26,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:26,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1518740254, now seen corresponding path program 1 times [2024-11-18 23:31:26,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:26,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349170872] [2024-11-18 23:31:26,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:26,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:29,966 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:31:29,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:29,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349170872] [2024-11-18 23:31:29,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349170872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:29,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:29,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 23:31:29,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677073503] [2024-11-18 23:31:29,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:29,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 23:31:29,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:29,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 23:31:29,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:31:29,968 INFO L87 Difference]: Start difference. First operand 475 states and 688 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-18 23:31:32,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:32,133 INFO L93 Difference]: Finished difference Result 1133 states and 1637 transitions. [2024-11-18 23:31:32,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 23:31:32,134 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 144 [2024-11-18 23:31:32,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:32,140 INFO L225 Difference]: With dead ends: 1133 [2024-11-18 23:31:32,141 INFO L226 Difference]: Without dead ends: 770 [2024-11-18 23:31:32,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=256, Invalid=736, Unknown=0, NotChecked=0, Total=992 [2024-11-18 23:31:32,143 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 481 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:32,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 1005 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 23:31:32,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2024-11-18 23:31:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 506. [2024-11-18 23:31:32,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 438 states have (on average 1.4109589041095891) internal successors, (618), 441 states have internal predecessors, (618), 60 states have call successors, (60), 7 states have call predecessors, (60), 7 states have return successors, (60), 57 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-18 23:31:32,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 738 transitions. [2024-11-18 23:31:32,178 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 738 transitions. Word has length 144 [2024-11-18 23:31:32,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:32,179 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 738 transitions. [2024-11-18 23:31:32,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-18 23:31:32,179 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 738 transitions. [2024-11-18 23:31:32,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 23:31:32,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:32,181 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:32,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 23:31:32,182 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:32,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:32,182 INFO L85 PathProgramCache]: Analyzing trace with hash 170203488, now seen corresponding path program 1 times [2024-11-18 23:31:32,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:32,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757285090] [2024-11-18 23:31:32,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:32,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:32,911 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:31:32,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:32,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757285090] [2024-11-18 23:31:32,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757285090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:32,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:32,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 23:31:32,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919319411] [2024-11-18 23:31:32,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:32,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 23:31:32,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:32,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 23:31:32,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:31:32,914 INFO L87 Difference]: Start difference. First operand 506 states and 738 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:33,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:33,861 INFO L93 Difference]: Finished difference Result 1542 states and 2183 transitions. [2024-11-18 23:31:33,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 23:31:33,862 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 23:31:33,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:33,867 INFO L225 Difference]: With dead ends: 1542 [2024-11-18 23:31:33,867 INFO L226 Difference]: Without dead ends: 1179 [2024-11-18 23:31:33,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-11-18 23:31:33,869 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 513 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:33,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 1021 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 23:31:33,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2024-11-18 23:31:33,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 741. [2024-11-18 23:31:33,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 655 states have (on average 1.4045801526717556) internal successors, (920), 662 states have internal predecessors, (920), 72 states have call successors, (72), 13 states have call predecessors, (72), 13 states have return successors, (72), 65 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-18 23:31:33,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1064 transitions. [2024-11-18 23:31:33,927 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1064 transitions. Word has length 144 [2024-11-18 23:31:33,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:33,927 INFO L471 AbstractCegarLoop]: Abstraction has 741 states and 1064 transitions. [2024-11-18 23:31:33,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:33,928 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1064 transitions. [2024-11-18 23:31:33,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 23:31:33,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:33,929 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:33,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 23:31:33,930 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:33,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:33,930 INFO L85 PathProgramCache]: Analyzing trace with hash -840913762, now seen corresponding path program 1 times [2024-11-18 23:31:33,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:33,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198303813] [2024-11-18 23:31:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:33,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:34,179 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:31:34,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:34,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198303813] [2024-11-18 23:31:34,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198303813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:34,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:34,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 23:31:34,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491224017] [2024-11-18 23:31:34,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:34,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 23:31:34,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:34,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 23:31:34,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:31:34,182 INFO L87 Difference]: Start difference. First operand 741 states and 1064 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:34,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:34,589 INFO L93 Difference]: Finished difference Result 1948 states and 2784 transitions. [2024-11-18 23:31:34,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 23:31:34,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 23:31:34,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:34,596 INFO L225 Difference]: With dead ends: 1948 [2024-11-18 23:31:34,597 INFO L226 Difference]: Without dead ends: 1392 [2024-11-18 23:31:34,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:31:34,599 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 294 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:34,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 572 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:31:34,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2024-11-18 23:31:34,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1215. [2024-11-18 23:31:34,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1079 states have (on average 1.4040778498609825) internal successors, (1515), 1091 states have internal predecessors, (1515), 116 states have call successors, (116), 19 states have call predecessors, (116), 19 states have return successors, (116), 104 states have call predecessors, (116), 116 states have call successors, (116) [2024-11-18 23:31:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1747 transitions. [2024-11-18 23:31:34,684 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1747 transitions. Word has length 144 [2024-11-18 23:31:34,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:34,685 INFO L471 AbstractCegarLoop]: Abstraction has 1215 states and 1747 transitions. [2024-11-18 23:31:34,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:34,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1747 transitions. [2024-11-18 23:31:34,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 23:31:34,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:34,688 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:34,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 23:31:34,689 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:34,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:34,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1418144414, now seen corresponding path program 1 times [2024-11-18 23:31:34,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:34,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726438383] [2024-11-18 23:31:34,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:34,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:31:35,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:35,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726438383] [2024-11-18 23:31:35,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726438383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:35,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:35,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 23:31:35,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089408138] [2024-11-18 23:31:35,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:35,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 23:31:35,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:35,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 23:31:35,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:31:35,211 INFO L87 Difference]: Start difference. First operand 1215 states and 1747 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-18 23:31:36,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:36,165 INFO L93 Difference]: Finished difference Result 3238 states and 4568 transitions. [2024-11-18 23:31:36,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 23:31:36,167 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 144 [2024-11-18 23:31:36,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:36,176 INFO L225 Difference]: With dead ends: 3238 [2024-11-18 23:31:36,176 INFO L226 Difference]: Without dead ends: 2688 [2024-11-18 23:31:36,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:31:36,179 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 433 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:36,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 618 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 23:31:36,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2024-11-18 23:31:36,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 1687. [2024-11-18 23:31:36,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1527 states have (on average 1.4197773411918795) internal successors, (2168), 1545 states have internal predecessors, (2168), 132 states have call successors, (132), 27 states have call predecessors, (132), 27 states have return successors, (132), 114 states have call predecessors, (132), 132 states have call successors, (132) [2024-11-18 23:31:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2432 transitions. [2024-11-18 23:31:36,297 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2432 transitions. Word has length 144 [2024-11-18 23:31:36,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:36,298 INFO L471 AbstractCegarLoop]: Abstraction has 1687 states and 2432 transitions. [2024-11-18 23:31:36,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-18 23:31:36,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2432 transitions. [2024-11-18 23:31:36,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 23:31:36,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:36,300 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:36,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 23:31:36,301 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:36,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:36,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1501033579, now seen corresponding path program 1 times [2024-11-18 23:31:36,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:36,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005619648] [2024-11-18 23:31:36,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:36,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:31:36,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:36,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005619648] [2024-11-18 23:31:36,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005619648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:36,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:36,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:31:36,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057853275] [2024-11-18 23:31:36,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:36,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:31:36,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:36,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:31:36,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:31:36,498 INFO L87 Difference]: Start difference. First operand 1687 states and 2432 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:36,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:36,805 INFO L93 Difference]: Finished difference Result 3863 states and 5511 transitions. [2024-11-18 23:31:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:31:36,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 23:31:36,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:36,816 INFO L225 Difference]: With dead ends: 3863 [2024-11-18 23:31:36,816 INFO L226 Difference]: Without dead ends: 2321 [2024-11-18 23:31:36,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:31:36,821 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 182 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:36,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 335 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:31:36,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2321 states. [2024-11-18 23:31:36,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2321 to 1308. [2024-11-18 23:31:36,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 1190 states have (on average 1.3991596638655461) internal successors, (1665), 1200 states have internal predecessors, (1665), 96 states have call successors, (96), 21 states have call predecessors, (96), 21 states have return successors, (96), 86 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-18 23:31:36,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 1857 transitions. [2024-11-18 23:31:36,944 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 1857 transitions. Word has length 144 [2024-11-18 23:31:36,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:36,944 INFO L471 AbstractCegarLoop]: Abstraction has 1308 states and 1857 transitions. [2024-11-18 23:31:36,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:36,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 1857 transitions. [2024-11-18 23:31:36,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 23:31:36,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:36,946 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:36,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 23:31:36,947 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:36,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:36,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1394921253, now seen corresponding path program 1 times [2024-11-18 23:31:36,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:36,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24980413] [2024-11-18 23:31:36,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:36,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:44,155 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:31:44,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:44,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24980413] [2024-11-18 23:31:44,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24980413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:44,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:44,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 23:31:44,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558812246] [2024-11-18 23:31:44,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:44,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 23:31:44,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:44,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 23:31:44,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-18 23:31:44,158 INFO L87 Difference]: Start difference. First operand 1308 states and 1857 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:46,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:46,179 INFO L93 Difference]: Finished difference Result 3335 states and 4732 transitions. [2024-11-18 23:31:46,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 23:31:46,180 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 23:31:46,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:46,188 INFO L225 Difference]: With dead ends: 3335 [2024-11-18 23:31:46,189 INFO L226 Difference]: Without dead ends: 2128 [2024-11-18 23:31:46,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2024-11-18 23:31:46,193 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 581 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:46,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 1018 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 23:31:46,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2024-11-18 23:31:46,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 1615. [2024-11-18 23:31:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1497 states have (on average 1.4141616566466266) internal successors, (2117), 1507 states have internal predecessors, (2117), 96 states have call successors, (96), 21 states have call predecessors, (96), 21 states have return successors, (96), 86 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-18 23:31:46,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2309 transitions. [2024-11-18 23:31:46,302 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2309 transitions. Word has length 144 [2024-11-18 23:31:46,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:46,302 INFO L471 AbstractCegarLoop]: Abstraction has 1615 states and 2309 transitions. [2024-11-18 23:31:46,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:46,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2309 transitions. [2024-11-18 23:31:46,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 23:31:46,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:46,304 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:46,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 23:31:46,304 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:46,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:46,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1136755815, now seen corresponding path program 1 times [2024-11-18 23:31:46,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:46,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239208147] [2024-11-18 23:31:46,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:46,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:47,235 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:31:47,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:47,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239208147] [2024-11-18 23:31:47,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239208147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:47,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:47,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 23:31:47,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546175032] [2024-11-18 23:31:47,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:47,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 23:31:47,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:47,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 23:31:47,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:31:47,237 INFO L87 Difference]: Start difference. First operand 1615 states and 2309 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:48,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:48,304 INFO L93 Difference]: Finished difference Result 2799 states and 3922 transitions. [2024-11-18 23:31:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 23:31:48,305 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 23:31:48,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:48,313 INFO L225 Difference]: With dead ends: 2799 [2024-11-18 23:31:48,313 INFO L226 Difference]: Without dead ends: 2216 [2024-11-18 23:31:48,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2024-11-18 23:31:48,316 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 431 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:48,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1011 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 23:31:48,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2024-11-18 23:31:48,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 1626. [2024-11-18 23:31:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1508 states have (on average 1.4137931034482758) internal successors, (2132), 1518 states have internal predecessors, (2132), 96 states have call successors, (96), 21 states have call predecessors, (96), 21 states have return successors, (96), 86 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-18 23:31:48,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2324 transitions. [2024-11-18 23:31:48,437 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2324 transitions. Word has length 144 [2024-11-18 23:31:48,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:48,438 INFO L471 AbstractCegarLoop]: Abstraction has 1626 states and 2324 transitions. [2024-11-18 23:31:48,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:48,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2324 transitions. [2024-11-18 23:31:48,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 23:31:48,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:48,440 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:48,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 23:31:48,440 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:48,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:48,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1336497191, now seen corresponding path program 1 times [2024-11-18 23:31:48,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:48,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702229464] [2024-11-18 23:31:48,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:48,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:31:48,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:48,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702229464] [2024-11-18 23:31:48,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702229464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:48,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:48,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:31:48,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325200529] [2024-11-18 23:31:48,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:48,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:31:48,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:48,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:31:48,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:31:48,686 INFO L87 Difference]: Start difference. First operand 1626 states and 2324 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:49,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:49,018 INFO L93 Difference]: Finished difference Result 3715 states and 5302 transitions. [2024-11-18 23:31:49,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:31:49,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 23:31:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:49,027 INFO L225 Difference]: With dead ends: 3715 [2024-11-18 23:31:49,027 INFO L226 Difference]: Without dead ends: 2519 [2024-11-18 23:31:49,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:31:49,030 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 168 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:49,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 577 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:31:49,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2024-11-18 23:31:49,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 1711. [2024-11-18 23:31:49,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1593 states have (on average 1.408662900188324) internal successors, (2244), 1603 states have internal predecessors, (2244), 96 states have call successors, (96), 21 states have call predecessors, (96), 21 states have return successors, (96), 86 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-18 23:31:49,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2436 transitions. [2024-11-18 23:31:49,154 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2436 transitions. Word has length 144 [2024-11-18 23:31:49,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:49,154 INFO L471 AbstractCegarLoop]: Abstraction has 1711 states and 2436 transitions. [2024-11-18 23:31:49,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:49,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2436 transitions. [2024-11-18 23:31:49,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 23:31:49,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:49,156 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:49,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 23:31:49,156 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:49,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:49,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1078331753, now seen corresponding path program 1 times [2024-11-18 23:31:49,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:49,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398486675] [2024-11-18 23:31:49,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:49,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:31:53,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:53,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398486675] [2024-11-18 23:31:53,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398486675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:53,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:53,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 23:31:53,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707826549] [2024-11-18 23:31:53,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:53,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 23:31:53,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:53,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 23:31:53,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:31:53,206 INFO L87 Difference]: Start difference. First operand 1711 states and 2436 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:54,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:54,787 INFO L93 Difference]: Finished difference Result 3299 states and 4643 transitions. [2024-11-18 23:31:54,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 23:31:54,788 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 23:31:54,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:54,796 INFO L225 Difference]: With dead ends: 3299 [2024-11-18 23:31:54,796 INFO L226 Difference]: Without dead ends: 2125 [2024-11-18 23:31:54,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-18 23:31:54,799 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 365 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:54,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 820 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 23:31:54,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2024-11-18 23:31:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 1713. [2024-11-18 23:31:54,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 1594 states have (on average 1.410288582183187) internal successors, (2248), 1604 states have internal predecessors, (2248), 96 states have call successors, (96), 22 states have call predecessors, (96), 22 states have return successors, (96), 86 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-18 23:31:54,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2440 transitions. [2024-11-18 23:31:54,951 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2440 transitions. Word has length 144 [2024-11-18 23:31:54,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:54,952 INFO L471 AbstractCegarLoop]: Abstraction has 1713 states and 2440 transitions. [2024-11-18 23:31:54,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:54,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2440 transitions. [2024-11-18 23:31:54,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 23:31:54,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:54,954 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:54,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 23:31:54,954 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:54,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:54,955 INFO L85 PathProgramCache]: Analyzing trace with hash -972219427, now seen corresponding path program 1 times [2024-11-18 23:31:54,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:54,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860906982] [2024-11-18 23:31:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:54,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:31:55,176 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 23:31:55,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:31:55,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860906982] [2024-11-18 23:31:55,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860906982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:31:55,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:31:55,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 23:31:55,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100706] [2024-11-18 23:31:55,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:31:55,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 23:31:55,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:31:55,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 23:31:55,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:31:55,180 INFO L87 Difference]: Start difference. First operand 1713 states and 2440 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:55,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:31:55,708 INFO L93 Difference]: Finished difference Result 4738 states and 6729 transitions. [2024-11-18 23:31:55,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 23:31:55,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 23:31:55,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:31:55,726 INFO L225 Difference]: With dead ends: 4738 [2024-11-18 23:31:55,726 INFO L226 Difference]: Without dead ends: 3474 [2024-11-18 23:31:55,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:31:55,734 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 272 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:31:55,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 760 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:31:55,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3474 states. [2024-11-18 23:31:55,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3474 to 2358. [2024-11-18 23:31:55,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2358 states, 2145 states have (on average 1.3906759906759907) internal successors, (2983), 2165 states have internal predecessors, (2983), 172 states have call successors, (172), 40 states have call predecessors, (172), 40 states have return successors, (172), 152 states have call predecessors, (172), 172 states have call successors, (172) [2024-11-18 23:31:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 3327 transitions. [2024-11-18 23:31:55,996 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 3327 transitions. Word has length 144 [2024-11-18 23:31:55,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:31:55,997 INFO L471 AbstractCegarLoop]: Abstraction has 2358 states and 3327 transitions. [2024-11-18 23:31:55,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 23:31:55,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 3327 transitions. [2024-11-18 23:31:55,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 23:31:55,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:31:55,999 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:31:55,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 23:31:55,999 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:31:56,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:31:56,000 INFO L85 PathProgramCache]: Analyzing trace with hash 397113921, now seen corresponding path program 1 times [2024-11-18 23:31:56,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:31:56,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461858250] [2024-11-18 23:31:56,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:31:56,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:31:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat