./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 25ff40e1cab2a460fc960bb835e8a5bb98b4f09095caa25e5ce8f52bf887c901 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 21:17:00,984 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 21:17:01,066 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 21:17:01,070 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 21:17:01,070 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 21:17:01,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 21:17:01,095 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 21:17:01,095 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 21:17:01,096 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 21:17:01,098 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 21:17:01,099 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 21:17:01,099 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 21:17:01,099 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 21:17:01,100 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 21:17:01,100 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 21:17:01,101 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 21:17:01,101 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 21:17:01,101 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 21:17:01,102 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 21:17:01,102 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 21:17:01,102 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 21:17:01,103 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 21:17:01,103 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 21:17:01,103 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 21:17:01,104 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 21:17:01,104 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 21:17:01,104 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 21:17:01,105 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 21:17:01,105 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 21:17:01,105 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 21:17:01,106 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 21:17:01,106 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 21:17:01,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 21:17:01,107 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 21:17:01,107 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 21:17:01,108 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 21:17:01,108 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 21:17:01,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 21:17:01,108 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 21:17:01,109 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 21:17:01,109 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 21:17:01,109 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 21:17:01,109 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25ff40e1cab2a460fc960bb835e8a5bb98b4f09095caa25e5ce8f52bf887c901 [2024-11-11 21:17:01,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 21:17:01,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 21:17:01,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 21:17:01,382 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 21:17:01,383 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 21:17:01,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2024-11-11 21:17:02,829 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 21:17:03,026 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 21:17:03,027 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2024-11-11 21:17:03,038 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df8a7061c/abcfbc6d06194a0db370fd174a3f1e0f/FLAGa14206389 [2024-11-11 21:17:03,054 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df8a7061c/abcfbc6d06194a0db370fd174a3f1e0f [2024-11-11 21:17:03,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 21:17:03,057 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 21:17:03,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 21:17:03,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 21:17:03,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 21:17:03,063 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 09:17:03" (1/1) ... [2024-11-11 21:17:03,064 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72202fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:17:03, skipping insertion in model container [2024-11-11 21:17:03,064 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 09:17:03" (1/1) ... [2024-11-11 21:17:03,092 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 21:17:03,291 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/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c[5947,5960] [2024-11-11 21:17:03,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 21:17:03,305 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 21:17:03,339 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/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c[5947,5960] [2024-11-11 21:17:03,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 21:17:03,357 INFO L204 MainTranslator]: Completed translation [2024-11-11 21:17:03,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:17:03 WrapperNode [2024-11-11 21:17:03,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 21:17:03,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 21:17:03,358 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 21:17:03,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 21:17:03,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:17:03" (1/1) ... [2024-11-11 21:17:03,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:17:03" (1/1) ... [2024-11-11 21:17:03,398 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 222 [2024-11-11 21:17:03,398 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 21:17:03,399 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 21:17:03,399 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 21:17:03,399 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 21:17:03,412 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:17:03" (1/1) ... [2024-11-11 21:17:03,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:17:03" (1/1) ... [2024-11-11 21:17:03,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:17:03" (1/1) ... [2024-11-11 21:17:03,430 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]. [2024-11-11 21:17:03,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:17:03" (1/1) ... [2024-11-11 21:17:03,431 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:17:03" (1/1) ... [2024-11-11 21:17:03,439 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:17:03" (1/1) ... [2024-11-11 21:17:03,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:17:03" (1/1) ... [2024-11-11 21:17:03,448 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:17:03" (1/1) ... [2024-11-11 21:17:03,449 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:17:03" (1/1) ... [2024-11-11 21:17:03,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 21:17:03,452 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 21:17:03,452 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 21:17:03,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 21:17:03,453 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:17:03" (1/1) ... [2024-11-11 21:17:03,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 21:17:03,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:17:03,498 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) [2024-11-11 21:17:03,504 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 [2024-11-11 21:17:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 21:17:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 21:17:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 21:17:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 21:17:03,646 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 21:17:03,650 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 21:17:04,046 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-11 21:17:04,047 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 21:17:04,066 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 21:17:04,066 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-11 21:17:04,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 09:17:04 BoogieIcfgContainer [2024-11-11 21:17:04,067 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 21:17:04,070 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 21:17:04,071 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 21:17:04,074 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 21:17:04,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 09:17:03" (1/3) ... [2024-11-11 21:17:04,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539b9024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 09:17:04, skipping insertion in model container [2024-11-11 21:17:04,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 09:17:03" (2/3) ... [2024-11-11 21:17:04,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539b9024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 09:17:04, skipping insertion in model container [2024-11-11 21:17:04,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 09:17:04" (3/3) ... [2024-11-11 21:17:04,077 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c [2024-11-11 21:17:04,093 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 21:17:04,093 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 21:17:04,165 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 21:17:04,174 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;@a31162b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 21:17:04,175 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 21:17:04,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 54 states have (on average 1.7037037037037037) internal successors, (92), 55 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:04,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-11 21:17:04,186 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:04,188 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:04,189 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:04,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:04,195 INFO L85 PathProgramCache]: Analyzing trace with hash 904518825, now seen corresponding path program 1 times [2024-11-11 21:17:04,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:04,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918703944] [2024-11-11 21:17:04,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:04,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:04,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:04,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:04,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918703944] [2024-11-11 21:17:04,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918703944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:17:04,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:17:04,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 21:17:04,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691053458] [2024-11-11 21:17:04,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:17:04,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-11 21:17:04,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:04,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-11 21:17:04,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 21:17:04,444 INFO L87 Difference]: Start difference. First operand has 56 states, 54 states have (on average 1.7037037037037037) internal successors, (92), 55 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:04,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:04,459 INFO L93 Difference]: Finished difference Result 91 states and 146 transitions. [2024-11-11 21:17:04,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-11 21:17:04,460 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-11 21:17:04,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:04,467 INFO L225 Difference]: With dead ends: 91 [2024-11-11 21:17:04,467 INFO L226 Difference]: Without dead ends: 52 [2024-11-11 21:17:04,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 21:17:04,473 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:04,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:17:04,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-11 21:17:04,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-11 21:17:04,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.6666666666666667) internal successors, (85), 51 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 85 transitions. [2024-11-11 21:17:04,521 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 85 transitions. Word has length 19 [2024-11-11 21:17:04,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:04,522 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 85 transitions. [2024-11-11 21:17:04,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:04,523 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 85 transitions. [2024-11-11 21:17:04,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-11 21:17:04,525 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:04,525 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:04,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 21:17:04,526 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:04,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:04,528 INFO L85 PathProgramCache]: Analyzing trace with hash -106598425, now seen corresponding path program 1 times [2024-11-11 21:17:04,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:04,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615327389] [2024-11-11 21:17:04,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:04,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:04,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:04,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615327389] [2024-11-11 21:17:04,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615327389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:17:04,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:17:04,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 21:17:04,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347165918] [2024-11-11 21:17:04,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:17:04,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 21:17:04,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:04,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 21:17:04,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 21:17:04,781 INFO L87 Difference]: Start difference. First operand 52 states and 85 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:04,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:04,870 INFO L93 Difference]: Finished difference Result 116 states and 183 transitions. [2024-11-11 21:17:04,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 21:17:04,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-11 21:17:04,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:04,872 INFO L225 Difference]: With dead ends: 116 [2024-11-11 21:17:04,874 INFO L226 Difference]: Without dead ends: 82 [2024-11-11 21:17:04,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 21:17:04,876 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 46 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:04,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 302 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 21:17:04,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-11 21:17:04,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 52. [2024-11-11 21:17:04,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 51 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:04,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 69 transitions. [2024-11-11 21:17:04,884 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 69 transitions. Word has length 19 [2024-11-11 21:17:04,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:04,885 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 69 transitions. [2024-11-11 21:17:04,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:04,885 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 69 transitions. [2024-11-11 21:17:04,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-11 21:17:04,886 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:04,886 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:04,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 21:17:04,887 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:04,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:04,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1681437636, now seen corresponding path program 1 times [2024-11-11 21:17:04,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:04,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111790119] [2024-11-11 21:17:04,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:04,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:05,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:05,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111790119] [2024-11-11 21:17:05,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111790119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:17:05,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:17:05,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 21:17:05,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962540922] [2024-11-11 21:17:05,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:17:05,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 21:17:05,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:05,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 21:17:05,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 21:17:05,067 INFO L87 Difference]: Start difference. First operand 52 states and 69 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:05,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:05,260 INFO L93 Difference]: Finished difference Result 232 states and 351 transitions. [2024-11-11 21:17:05,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-11 21:17:05,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-11 21:17:05,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:05,263 INFO L225 Difference]: With dead ends: 232 [2024-11-11 21:17:05,263 INFO L226 Difference]: Without dead ends: 202 [2024-11-11 21:17:05,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-11 21:17:05,265 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 272 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:05,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 426 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 21:17:05,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-11 21:17:05,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 80. [2024-11-11 21:17:05,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.4303797468354431) internal successors, (113), 79 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:05,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 113 transitions. [2024-11-11 21:17:05,289 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 113 transitions. Word has length 34 [2024-11-11 21:17:05,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:05,289 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 113 transitions. [2024-11-11 21:17:05,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:05,290 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 113 transitions. [2024-11-11 21:17:05,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-11 21:17:05,291 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:05,291 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:05,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-11 21:17:05,291 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:05,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:05,296 INFO L85 PathProgramCache]: Analyzing trace with hash -461836524, now seen corresponding path program 1 times [2024-11-11 21:17:05,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:05,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645864028] [2024-11-11 21:17:05,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:05,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:05,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:05,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645864028] [2024-11-11 21:17:05,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645864028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:17:05,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:17:05,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:17:05,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584893656] [2024-11-11 21:17:05,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:17:05,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:17:05,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:05,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:17:05,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:17:05,427 INFO L87 Difference]: Start difference. First operand 80 states and 113 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:05,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:05,463 INFO L93 Difference]: Finished difference Result 185 states and 276 transitions. [2024-11-11 21:17:05,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:17:05,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-11 21:17:05,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:05,467 INFO L225 Difference]: With dead ends: 185 [2024-11-11 21:17:05,467 INFO L226 Difference]: Without dead ends: 127 [2024-11-11 21:17:05,468 INFO L434 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 [2024-11-11 21:17:05,472 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 27 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:05,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 109 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:17:05,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-11 21:17:05,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-11-11 21:17:05,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.4596774193548387) internal successors, (181), 124 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 181 transitions. [2024-11-11 21:17:05,486 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 181 transitions. Word has length 36 [2024-11-11 21:17:05,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:05,486 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 181 transitions. [2024-11-11 21:17:05,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:05,487 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 181 transitions. [2024-11-11 21:17:05,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-11 21:17:05,488 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:05,488 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:05,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-11 21:17:05,489 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:05,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:05,489 INFO L85 PathProgramCache]: Analyzing trace with hash -395343012, now seen corresponding path program 1 times [2024-11-11 21:17:05,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:05,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835262071] [2024-11-11 21:17:05,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:05,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:05,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:05,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835262071] [2024-11-11 21:17:05,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835262071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:17:05,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:17:05,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 21:17:05,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415247361] [2024-11-11 21:17:05,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:17:05,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 21:17:05,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:05,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 21:17:05,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-11 21:17:05,731 INFO L87 Difference]: Start difference. First operand 125 states and 181 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:05,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:05,805 INFO L93 Difference]: Finished difference Result 230 states and 341 transitions. [2024-11-11 21:17:05,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 21:17:05,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-11 21:17:05,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:05,807 INFO L225 Difference]: With dead ends: 230 [2024-11-11 21:17:05,807 INFO L226 Difference]: Without dead ends: 127 [2024-11-11 21:17:05,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-11 21:17:05,809 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 100 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:05,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 150 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:17:05,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-11 21:17:05,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-11-11 21:17:05,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.4435483870967742) internal successors, (179), 124 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:05,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 179 transitions. [2024-11-11 21:17:05,817 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 179 transitions. Word has length 36 [2024-11-11 21:17:05,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:05,818 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 179 transitions. [2024-11-11 21:17:05,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:05,818 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 179 transitions. [2024-11-11 21:17:05,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-11 21:17:05,820 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:05,820 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:05,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-11 21:17:05,820 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:05,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:05,821 INFO L85 PathProgramCache]: Analyzing trace with hash 214545292, now seen corresponding path program 1 times [2024-11-11 21:17:05,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:05,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121690303] [2024-11-11 21:17:05,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:05,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:06,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:06,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121690303] [2024-11-11 21:17:06,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121690303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:17:06,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:17:06,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-11 21:17:06,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055266683] [2024-11-11 21:17:06,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:17:06,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-11 21:17:06,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:06,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-11 21:17:06,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-11 21:17:06,058 INFO L87 Difference]: Start difference. First operand 125 states and 179 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:06,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:06,105 INFO L93 Difference]: Finished difference Result 133 states and 188 transitions. [2024-11-11 21:17:06,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-11 21:17:06,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-11 21:17:06,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:06,107 INFO L225 Difference]: With dead ends: 133 [2024-11-11 21:17:06,107 INFO L226 Difference]: Without dead ends: 131 [2024-11-11 21:17:06,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-11 21:17:06,110 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:06,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 425 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:17:06,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-11 21:17:06,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-11 21:17:06,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.4153846153846155) internal successors, (184), 130 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 184 transitions. [2024-11-11 21:17:06,122 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 184 transitions. Word has length 37 [2024-11-11 21:17:06,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:06,122 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 184 transitions. [2024-11-11 21:17:06,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 184 transitions. [2024-11-11 21:17:06,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-11 21:17:06,126 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:06,126 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:06,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-11 21:17:06,126 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:06,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:06,127 INFO L85 PathProgramCache]: Analyzing trace with hash -63465668, now seen corresponding path program 1 times [2024-11-11 21:17:06,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:06,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31020846] [2024-11-11 21:17:06,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:06,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:06,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:06,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31020846] [2024-11-11 21:17:06,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31020846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:17:06,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:17:06,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:17:06,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458713737] [2024-11-11 21:17:06,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:17:06,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:17:06,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:06,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:17:06,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:17:06,180 INFO L87 Difference]: Start difference. First operand 131 states and 184 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:06,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:06,198 INFO L93 Difference]: Finished difference Result 253 states and 365 transitions. [2024-11-11 21:17:06,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:17:06,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-11 21:17:06,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:06,200 INFO L225 Difference]: With dead ends: 253 [2024-11-11 21:17:06,200 INFO L226 Difference]: Without dead ends: 189 [2024-11-11 21:17:06,200 INFO L434 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 [2024-11-11 21:17:06,201 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 37 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:06,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 149 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:17:06,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-11 21:17:06,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2024-11-11 21:17:06,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.424731182795699) internal successors, (265), 186 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:06,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 265 transitions. [2024-11-11 21:17:06,210 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 265 transitions. Word has length 38 [2024-11-11 21:17:06,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:06,210 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 265 transitions. [2024-11-11 21:17:06,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:06,210 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 265 transitions. [2024-11-11 21:17:06,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-11 21:17:06,211 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:06,211 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:06,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-11 21:17:06,212 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:06,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:06,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2016032828, now seen corresponding path program 1 times [2024-11-11 21:17:06,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:06,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557070606] [2024-11-11 21:17:06,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:06,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:06,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:06,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557070606] [2024-11-11 21:17:06,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557070606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:17:06,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:17:06,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:17:06,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891625458] [2024-11-11 21:17:06,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:17:06,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:17:06,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:06,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:17:06,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:17:06,264 INFO L87 Difference]: Start difference. First operand 187 states and 265 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:06,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:06,279 INFO L93 Difference]: Finished difference Result 489 states and 705 transitions. [2024-11-11 21:17:06,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:17:06,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-11 21:17:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:06,281 INFO L225 Difference]: With dead ends: 489 [2024-11-11 21:17:06,281 INFO L226 Difference]: Without dead ends: 326 [2024-11-11 21:17:06,282 INFO L434 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 [2024-11-11 21:17:06,282 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 35 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:06,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 155 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:17:06,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-11 21:17:06,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 324. [2024-11-11 21:17:06,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 323 states have (on average 1.414860681114551) internal successors, (457), 323 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:06,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 457 transitions. [2024-11-11 21:17:06,299 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 457 transitions. Word has length 38 [2024-11-11 21:17:06,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:06,299 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 457 transitions. [2024-11-11 21:17:06,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:06,300 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 457 transitions. [2024-11-11 21:17:06,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-11 21:17:06,304 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:06,304 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:06,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-11 21:17:06,305 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:06,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:06,305 INFO L85 PathProgramCache]: Analyzing trace with hash -498001604, now seen corresponding path program 1 times [2024-11-11 21:17:06,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:06,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433696471] [2024-11-11 21:17:06,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:06,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:06,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:06,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:06,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433696471] [2024-11-11 21:17:06,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433696471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:17:06,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:17:06,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:17:06,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326963333] [2024-11-11 21:17:06,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:17:06,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:17:06,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:06,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:17:06,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:17:06,367 INFO L87 Difference]: Start difference. First operand 324 states and 457 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:06,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:06,388 INFO L93 Difference]: Finished difference Result 876 states and 1239 transitions. [2024-11-11 21:17:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:17:06,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-11 21:17:06,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:06,394 INFO L225 Difference]: With dead ends: 876 [2024-11-11 21:17:06,394 INFO L226 Difference]: Without dead ends: 576 [2024-11-11 21:17:06,395 INFO L434 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 [2024-11-11 21:17:06,395 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 33 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:06,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 157 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:17:06,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2024-11-11 21:17:06,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2024-11-11 21:17:06,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 1.3839441535776615) internal successors, (793), 573 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:06,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 793 transitions. [2024-11-11 21:17:06,416 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 793 transitions. Word has length 38 [2024-11-11 21:17:06,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:06,417 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 793 transitions. [2024-11-11 21:17:06,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:06,418 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 793 transitions. [2024-11-11 21:17:06,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-11 21:17:06,423 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:06,424 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:06,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-11 21:17:06,424 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:06,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:06,424 INFO L85 PathProgramCache]: Analyzing trace with hash 201693929, now seen corresponding path program 1 times [2024-11-11 21:17:06,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:06,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233185976] [2024-11-11 21:17:06,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:06,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-11 21:17:06,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:06,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233185976] [2024-11-11 21:17:06,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233185976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:17:06,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:17:06,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 21:17:06,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048829834] [2024-11-11 21:17:06,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:17:06,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 21:17:06,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:06,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 21:17:06,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-11 21:17:06,578 INFO L87 Difference]: Start difference. First operand 574 states and 793 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:06,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:06,681 INFO L93 Difference]: Finished difference Result 2206 states and 3069 transitions. [2024-11-11 21:17:06,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 21:17:06,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-11 21:17:06,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:06,687 INFO L225 Difference]: With dead ends: 2206 [2024-11-11 21:17:06,687 INFO L226 Difference]: Without dead ends: 1804 [2024-11-11 21:17:06,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-11 21:17:06,689 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 159 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:06,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 294 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 21:17:06,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2024-11-11 21:17:06,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1050. [2024-11-11 21:17:06,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 1049 states have (on average 1.3813155386081983) internal successors, (1449), 1049 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:06,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1449 transitions. [2024-11-11 21:17:06,724 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1449 transitions. Word has length 53 [2024-11-11 21:17:06,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:06,725 INFO L471 AbstractCegarLoop]: Abstraction has 1050 states and 1449 transitions. [2024-11-11 21:17:06,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:06,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1449 transitions. [2024-11-11 21:17:06,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-11 21:17:06,726 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:06,726 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:06,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-11 21:17:06,727 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:06,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:06,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2013774871, now seen corresponding path program 1 times [2024-11-11 21:17:06,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:06,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76316044] [2024-11-11 21:17:06,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:06,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:06,817 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-11 21:17:06,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:06,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76316044] [2024-11-11 21:17:06,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76316044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:17:06,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:17:06,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 21:17:06,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698699221] [2024-11-11 21:17:06,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:17:06,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 21:17:06,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:06,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 21:17:06,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-11 21:17:06,819 INFO L87 Difference]: Start difference. First operand 1050 states and 1449 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:06,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:06,923 INFO L93 Difference]: Finished difference Result 2754 states and 3829 transitions. [2024-11-11 21:17:06,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 21:17:06,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-11 21:17:06,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:06,932 INFO L225 Difference]: With dead ends: 2754 [2024-11-11 21:17:06,932 INFO L226 Difference]: Without dead ends: 2204 [2024-11-11 21:17:06,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-11 21:17:06,934 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 163 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:06,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 269 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:17:06,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2024-11-11 21:17:07,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 1798. [2024-11-11 21:17:07,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1797 states have (on average 1.3784084585420144) internal successors, (2477), 1797 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:07,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2477 transitions. [2024-11-11 21:17:07,011 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2477 transitions. Word has length 53 [2024-11-11 21:17:07,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:07,011 INFO L471 AbstractCegarLoop]: Abstraction has 1798 states and 2477 transitions. [2024-11-11 21:17:07,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:07,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2477 transitions. [2024-11-11 21:17:07,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-11 21:17:07,012 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:07,013 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:07,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-11 21:17:07,013 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:07,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:07,014 INFO L85 PathProgramCache]: Analyzing trace with hash -232842007, now seen corresponding path program 1 times [2024-11-11 21:17:07,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:07,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689224937] [2024-11-11 21:17:07,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:07,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:07,125 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-11 21:17:07,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:07,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689224937] [2024-11-11 21:17:07,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689224937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:17:07,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:17:07,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 21:17:07,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942094352] [2024-11-11 21:17:07,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:17:07,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 21:17:07,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:07,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 21:17:07,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-11 21:17:07,129 INFO L87 Difference]: Start difference. First operand 1798 states and 2477 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:07,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:07,245 INFO L93 Difference]: Finished difference Result 3302 states and 4585 transitions. [2024-11-11 21:17:07,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 21:17:07,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-11 21:17:07,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:07,256 INFO L225 Difference]: With dead ends: 3302 [2024-11-11 21:17:07,259 INFO L226 Difference]: Without dead ends: 2752 [2024-11-11 21:17:07,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-11 21:17:07,264 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 169 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:07,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 275 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:17:07,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2024-11-11 21:17:07,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 2346. [2024-11-11 21:17:07,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2346 states, 2345 states have (on average 1.378678038379531) internal successors, (3233), 2345 states have internal predecessors, (3233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:07,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3233 transitions. [2024-11-11 21:17:07,377 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3233 transitions. Word has length 53 [2024-11-11 21:17:07,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:07,378 INFO L471 AbstractCegarLoop]: Abstraction has 2346 states and 3233 transitions. [2024-11-11 21:17:07,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:07,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3233 transitions. [2024-11-11 21:17:07,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-11 21:17:07,379 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:07,379 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:07,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-11 21:17:07,380 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:07,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:07,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1948699024, now seen corresponding path program 1 times [2024-11-11 21:17:07,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:07,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949109828] [2024-11-11 21:17:07,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:07,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:07,484 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:07,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:07,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949109828] [2024-11-11 21:17:07,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949109828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:17:07,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:17:07,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:17:07,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146305518] [2024-11-11 21:17:07,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:17:07,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:17:07,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:07,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:17:07,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:17:07,487 INFO L87 Difference]: Start difference. First operand 2346 states and 3233 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:07,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:07,574 INFO L93 Difference]: Finished difference Result 4670 states and 6443 transitions. [2024-11-11 21:17:07,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:17:07,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-11 21:17:07,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:07,583 INFO L225 Difference]: With dead ends: 4670 [2024-11-11 21:17:07,583 INFO L226 Difference]: Without dead ends: 2348 [2024-11-11 21:17:07,588 INFO L434 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 [2024-11-11 21:17:07,589 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 29 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:07,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 144 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:17:07,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2024-11-11 21:17:07,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2346. [2024-11-11 21:17:07,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2346 states, 2345 states have (on average 1.3573560767590618) internal successors, (3183), 2345 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:07,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3183 transitions. [2024-11-11 21:17:07,670 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3183 transitions. Word has length 54 [2024-11-11 21:17:07,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:07,671 INFO L471 AbstractCegarLoop]: Abstraction has 2346 states and 3183 transitions. [2024-11-11 21:17:07,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:07,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3183 transitions. [2024-11-11 21:17:07,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-11 21:17:07,673 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:07,673 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:07,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-11 21:17:07,674 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:07,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:07,674 INFO L85 PathProgramCache]: Analyzing trace with hash 443391553, now seen corresponding path program 1 times [2024-11-11 21:17:07,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:07,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914562506] [2024-11-11 21:17:07,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:07,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:07,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:07,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914562506] [2024-11-11 21:17:07,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914562506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:17:07,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:17:07,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:17:07,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963218060] [2024-11-11 21:17:07,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:17:07,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:17:07,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:07,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:17:07,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:17:07,747 INFO L87 Difference]: Start difference. First operand 2346 states and 3183 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:07,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:07,781 INFO L93 Difference]: Finished difference Result 3265 states and 4443 transitions. [2024-11-11 21:17:07,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:17:07,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-11 21:17:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:07,785 INFO L225 Difference]: With dead ends: 3265 [2024-11-11 21:17:07,785 INFO L226 Difference]: Without dead ends: 943 [2024-11-11 21:17:07,787 INFO L434 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 [2024-11-11 21:17:07,788 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 23 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:07,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 141 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:17:07,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2024-11-11 21:17:07,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 935. [2024-11-11 21:17:07,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 934 states have (on average 1.3468950749464668) internal successors, (1258), 934 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1258 transitions. [2024-11-11 21:17:07,836 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1258 transitions. Word has length 55 [2024-11-11 21:17:07,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:07,837 INFO L471 AbstractCegarLoop]: Abstraction has 935 states and 1258 transitions. [2024-11-11 21:17:07,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:07,837 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1258 transitions. [2024-11-11 21:17:07,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-11 21:17:07,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:07,838 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:07,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-11 21:17:07,838 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:07,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:07,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1656493662, now seen corresponding path program 1 times [2024-11-11 21:17:07,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:07,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593457258] [2024-11-11 21:17:07,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:07,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:07,933 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:07,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:07,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593457258] [2024-11-11 21:17:07,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593457258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 21:17:07,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 21:17:07,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 21:17:07,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471504714] [2024-11-11 21:17:07,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 21:17:07,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 21:17:07,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:07,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 21:17:07,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 21:17:07,937 INFO L87 Difference]: Start difference. First operand 935 states and 1258 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:07,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:07,960 INFO L93 Difference]: Finished difference Result 1389 states and 1872 transitions. [2024-11-11 21:17:07,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 21:17:07,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-11 21:17:07,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:07,963 INFO L225 Difference]: With dead ends: 1389 [2024-11-11 21:17:07,963 INFO L226 Difference]: Without dead ends: 487 [2024-11-11 21:17:07,965 INFO L434 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 [2024-11-11 21:17:07,966 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 25 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:07,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 120 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 21:17:07,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2024-11-11 21:17:07,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 485. [2024-11-11 21:17:07,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.3161157024793388) internal successors, (637), 484 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:07,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 637 transitions. [2024-11-11 21:17:07,983 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 637 transitions. Word has length 56 [2024-11-11 21:17:07,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:07,983 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 637 transitions. [2024-11-11 21:17:07,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:07,984 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 637 transitions. [2024-11-11 21:17:07,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-11 21:17:07,984 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:07,984 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:07,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-11 21:17:07,985 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:07,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:07,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2139764684, now seen corresponding path program 1 times [2024-11-11 21:17:07,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:07,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402420092] [2024-11-11 21:17:07,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:07,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:08,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:08,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402420092] [2024-11-11 21:17:08,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402420092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:17:08,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294765691] [2024-11-11 21:17:08,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:08,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:17:08,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:17:08,389 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 21:17:08,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 21:17:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:08,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-11 21:17:08,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:17:08,684 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-11 21:17:08,684 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 21:17:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-11 21:17:09,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294765691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 21:17:09,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 21:17:09,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 4] total 16 [2024-11-11 21:17:09,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949171605] [2024-11-11 21:17:09,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 21:17:09,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-11 21:17:09,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:09,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-11 21:17:09,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-11 21:17:09,016 INFO L87 Difference]: Start difference. First operand 485 states and 637 transitions. Second operand has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:10,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:10,073 INFO L93 Difference]: Finished difference Result 2493 states and 3258 transitions. [2024-11-11 21:17:10,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-11 21:17:10,074 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-11 21:17:10,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:10,080 INFO L225 Difference]: With dead ends: 2493 [2024-11-11 21:17:10,081 INFO L226 Difference]: Without dead ends: 2041 [2024-11-11 21:17:10,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=399, Invalid=1323, Unknown=0, NotChecked=0, Total=1722 [2024-11-11 21:17:10,083 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 1138 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:10,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 432 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-11 21:17:10,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2024-11-11 21:17:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 1923. [2024-11-11 21:17:10,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1922 states have (on average 1.2580645161290323) internal successors, (2418), 1922 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2418 transitions. [2024-11-11 21:17:10,164 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2418 transitions. Word has length 58 [2024-11-11 21:17:10,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:10,164 INFO L471 AbstractCegarLoop]: Abstraction has 1923 states and 2418 transitions. [2024-11-11 21:17:10,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:10,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2418 transitions. [2024-11-11 21:17:10,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-11 21:17:10,165 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:10,165 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:10,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 21:17:10,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-11 21:17:10,366 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:10,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:10,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1889442531, now seen corresponding path program 1 times [2024-11-11 21:17:10,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:10,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445151290] [2024-11-11 21:17:10,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:10,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:11,418 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:11,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:11,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445151290] [2024-11-11 21:17:11,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445151290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:17:11,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531173322] [2024-11-11 21:17:11,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:11,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:17:11,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:17:11,421 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 21:17:11,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 21:17:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:11,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-11 21:17:11,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:17:12,998 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:12,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 21:17:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:16,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531173322] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 21:17:16,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 21:17:16,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 20] total 47 [2024-11-11 21:17:16,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697591990] [2024-11-11 21:17:16,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 21:17:16,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-11 21:17:16,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:16,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-11 21:17:16,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=1862, Unknown=0, NotChecked=0, Total=2162 [2024-11-11 21:17:16,229 INFO L87 Difference]: Start difference. First operand 1923 states and 2418 transitions. Second operand has 47 states, 47 states have (on average 3.276595744680851) internal successors, (154), 47 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:38,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:38,933 INFO L93 Difference]: Finished difference Result 18454 states and 23245 transitions. [2024-11-11 21:17:38,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-11-11 21:17:38,934 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.276595744680851) internal successors, (154), 47 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-11 21:17:38,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:38,985 INFO L225 Difference]: With dead ends: 18454 [2024-11-11 21:17:38,985 INFO L226 Difference]: Without dead ends: 16721 [2024-11-11 21:17:39,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17170 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=7081, Invalid=35975, Unknown=0, NotChecked=0, Total=43056 [2024-11-11 21:17:39,002 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 3661 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 2015 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3661 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 2139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:39,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3661 Valid, 2244 Invalid, 2139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2015 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-11 21:17:39,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16721 states. [2024-11-11 21:17:39,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16721 to 7788. [2024-11-11 21:17:39,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7788 states, 7787 states have (on average 1.2427122126621293) internal successors, (9677), 7787 states have internal predecessors, (9677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7788 states to 7788 states and 9677 transitions. [2024-11-11 21:17:39,422 INFO L78 Accepts]: Start accepts. Automaton has 7788 states and 9677 transitions. Word has length 59 [2024-11-11 21:17:39,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:39,425 INFO L471 AbstractCegarLoop]: Abstraction has 7788 states and 9677 transitions. [2024-11-11 21:17:39,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.276595744680851) internal successors, (154), 47 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:39,426 INFO L276 IsEmpty]: Start isEmpty. Operand 7788 states and 9677 transitions. [2024-11-11 21:17:39,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-11 21:17:39,426 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:39,427 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:39,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-11 21:17:39,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-11 21:17:39,628 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:39,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:39,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1703690916, now seen corresponding path program 1 times [2024-11-11 21:17:39,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:39,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667118458] [2024-11-11 21:17:39,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:39,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:40,050 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:40,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:40,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667118458] [2024-11-11 21:17:40,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667118458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:17:40,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406778966] [2024-11-11 21:17:40,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:40,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:17:40,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:17:40,052 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 21:17:40,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 21:17:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:40,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-11 21:17:40,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:17:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:40,629 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 21:17:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:41,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406778966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 21:17:41,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 21:17:41,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 29 [2024-11-11 21:17:41,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922791570] [2024-11-11 21:17:41,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 21:17:41,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-11 21:17:41,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:41,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-11 21:17:41,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2024-11-11 21:17:41,450 INFO L87 Difference]: Start difference. First operand 7788 states and 9677 transitions. Second operand has 29 states, 29 states have (on average 5.413793103448276) internal successors, (157), 29 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:42,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:42,201 INFO L93 Difference]: Finished difference Result 14756 states and 18418 transitions. [2024-11-11 21:17:42,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-11 21:17:42,202 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.413793103448276) internal successors, (157), 29 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-11 21:17:42,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:42,218 INFO L225 Difference]: With dead ends: 14756 [2024-11-11 21:17:42,218 INFO L226 Difference]: Without dead ends: 8194 [2024-11-11 21:17:42,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=429, Invalid=1463, Unknown=0, NotChecked=0, Total=1892 [2024-11-11 21:17:42,226 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 460 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:42,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 483 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 21:17:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8194 states. [2024-11-11 21:17:42,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8194 to 7744. [2024-11-11 21:17:42,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7744 states, 7743 states have (on average 1.2325971845537904) internal successors, (9544), 7743 states have internal predecessors, (9544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7744 states to 7744 states and 9544 transitions. [2024-11-11 21:17:42,579 INFO L78 Accepts]: Start accepts. Automaton has 7744 states and 9544 transitions. Word has length 60 [2024-11-11 21:17:42,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:42,579 INFO L471 AbstractCegarLoop]: Abstraction has 7744 states and 9544 transitions. [2024-11-11 21:17:42,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.413793103448276) internal successors, (157), 29 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:42,579 INFO L276 IsEmpty]: Start isEmpty. Operand 7744 states and 9544 transitions. [2024-11-11 21:17:42,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-11 21:17:42,580 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:42,580 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:42,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-11 21:17:42,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-11 21:17:42,781 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:42,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:42,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1612137706, now seen corresponding path program 1 times [2024-11-11 21:17:42,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:42,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555770159] [2024-11-11 21:17:42,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:42,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:43,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:43,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555770159] [2024-11-11 21:17:43,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555770159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:17:43,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553027080] [2024-11-11 21:17:43,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:43,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:17:43,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:17:43,493 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 21:17:43,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 21:17:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:43,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-11 21:17:43,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:17:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:44,927 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 21:17:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:46,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553027080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 21:17:46,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 21:17:46,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 15] total 42 [2024-11-11 21:17:46,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512481792] [2024-11-11 21:17:46,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 21:17:46,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-11 21:17:46,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:46,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-11 21:17:46,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2024-11-11 21:17:46,212 INFO L87 Difference]: Start difference. First operand 7744 states and 9544 transitions. Second operand has 42 states, 42 states have (on average 3.8095238095238093) internal successors, (160), 42 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:51,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:51,840 INFO L93 Difference]: Finished difference Result 18015 states and 22394 transitions. [2024-11-11 21:17:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-11 21:17:51,841 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.8095238095238093) internal successors, (160), 42 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-11 21:17:51,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:51,868 INFO L225 Difference]: With dead ends: 18015 [2024-11-11 21:17:51,869 INFO L226 Difference]: Without dead ends: 13011 [2024-11-11 21:17:51,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4388 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2881, Invalid=12125, Unknown=0, NotChecked=0, Total=15006 [2024-11-11 21:17:51,880 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 3726 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3726 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 1770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:51,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3726 Valid, 1580 Invalid, 1770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1676 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-11 21:17:51,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13011 states. [2024-11-11 21:17:52,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13011 to 6244. [2024-11-11 21:17:52,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6244 states, 6243 states have (on average 1.228415825724812) internal successors, (7669), 6243 states have internal predecessors, (7669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:52,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6244 states to 6244 states and 7669 transitions. [2024-11-11 21:17:52,224 INFO L78 Accepts]: Start accepts. Automaton has 6244 states and 7669 transitions. Word has length 60 [2024-11-11 21:17:52,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:52,224 INFO L471 AbstractCegarLoop]: Abstraction has 6244 states and 7669 transitions. [2024-11-11 21:17:52,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.8095238095238093) internal successors, (160), 42 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:52,225 INFO L276 IsEmpty]: Start isEmpty. Operand 6244 states and 7669 transitions. [2024-11-11 21:17:52,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-11 21:17:52,225 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:52,225 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:52,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-11 21:17:52,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:17:52,426 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:52,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:52,427 INFO L85 PathProgramCache]: Analyzing trace with hash -494193176, now seen corresponding path program 1 times [2024-11-11 21:17:52,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:52,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164269948] [2024-11-11 21:17:52,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:52,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:53,450 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:53,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:17:53,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164269948] [2024-11-11 21:17:53,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164269948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:17:53,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908374550] [2024-11-11 21:17:53,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:53,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:17:53,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:17:53,452 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 21:17:53,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 21:17:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:17:53,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-11 21:17:53,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:17:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:54,182 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 21:17:54,840 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:17:54,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908374550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 21:17:54,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 21:17:54,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 38 [2024-11-11 21:17:54,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908871438] [2024-11-11 21:17:54,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 21:17:54,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-11 21:17:54,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:17:54,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-11 21:17:54,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1267, Unknown=0, NotChecked=0, Total=1406 [2024-11-11 21:17:54,842 INFO L87 Difference]: Start difference. First operand 6244 states and 7669 transitions. Second operand has 38 states, 38 states have (on average 3.973684210526316) internal successors, (151), 38 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:58,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:17:58,832 INFO L93 Difference]: Finished difference Result 17792 states and 22053 transitions. [2024-11-11 21:17:58,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-11 21:17:58,833 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.973684210526316) internal successors, (151), 38 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-11 21:17:58,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:17:58,857 INFO L225 Difference]: With dead ends: 17792 [2024-11-11 21:17:58,857 INFO L226 Difference]: Without dead ends: 13612 [2024-11-11 21:17:58,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1294 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1306, Invalid=4394, Unknown=0, NotChecked=0, Total=5700 [2024-11-11 21:17:58,863 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 1903 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-11 21:17:58,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1903 Valid, 1440 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-11 21:17:58,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13612 states. [2024-11-11 21:17:59,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13612 to 4974. [2024-11-11 21:17:59,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4974 states, 4973 states have (on average 1.2274281118037402) internal successors, (6104), 4973 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:59,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4974 states to 4974 states and 6104 transitions. [2024-11-11 21:17:59,231 INFO L78 Accepts]: Start accepts. Automaton has 4974 states and 6104 transitions. Word has length 62 [2024-11-11 21:17:59,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:17:59,232 INFO L471 AbstractCegarLoop]: Abstraction has 4974 states and 6104 transitions. [2024-11-11 21:17:59,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.973684210526316) internal successors, (151), 38 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:17:59,233 INFO L276 IsEmpty]: Start isEmpty. Operand 4974 states and 6104 transitions. [2024-11-11 21:17:59,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-11 21:17:59,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:17:59,235 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:17:59,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-11 21:17:59,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:17:59,436 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:17:59,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:17:59,437 INFO L85 PathProgramCache]: Analyzing trace with hash -651141410, now seen corresponding path program 1 times [2024-11-11 21:17:59,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:17:59,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302088550] [2024-11-11 21:17:59,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:17:59,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:17:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:18:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 22 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:18:00,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:18:00,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302088550] [2024-11-11 21:18:00,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302088550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:18:00,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529803038] [2024-11-11 21:18:00,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:18:00,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:18:00,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:18:00,294 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 21:18:00,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-11 21:18:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:18:00,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-11 21:18:00,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:18:01,246 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 49 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:18:01,247 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 21:18:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 22 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:18:03,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529803038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 21:18:03,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 21:18:03,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 15] total 42 [2024-11-11 21:18:03,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423390783] [2024-11-11 21:18:03,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 21:18:03,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-11 21:18:03,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:18:03,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-11 21:18:03,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1641, Unknown=0, NotChecked=0, Total=1806 [2024-11-11 21:18:03,108 INFO L87 Difference]: Start difference. First operand 4974 states and 6104 transitions. Second operand has 43 states, 43 states have (on average 6.395348837209302) internal successors, (275), 42 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:18:06,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:18:06,406 INFO L93 Difference]: Finished difference Result 7804 states and 9594 transitions. [2024-11-11 21:18:06,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-11 21:18:06,407 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.395348837209302) internal successors, (275), 42 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-11-11 21:18:06,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:18:06,413 INFO L225 Difference]: With dead ends: 7804 [2024-11-11 21:18:06,414 INFO L226 Difference]: Without dead ends: 5914 [2024-11-11 21:18:06,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1632, Invalid=7680, Unknown=0, NotChecked=0, Total=9312 [2024-11-11 21:18:06,417 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 1743 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 1939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-11 21:18:06,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1743 Valid, 1860 Invalid, 1939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1852 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-11 21:18:06,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5914 states. [2024-11-11 21:18:06,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5914 to 4604. [2024-11-11 21:18:06,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4604 states, 4603 states have (on average 1.2189876167716707) internal successors, (5611), 4603 states have internal predecessors, (5611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:18:06,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4604 states to 4604 states and 5611 transitions. [2024-11-11 21:18:06,686 INFO L78 Accepts]: Start accepts. Automaton has 4604 states and 5611 transitions. Word has length 98 [2024-11-11 21:18:06,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:18:06,686 INFO L471 AbstractCegarLoop]: Abstraction has 4604 states and 5611 transitions. [2024-11-11 21:18:06,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.395348837209302) internal successors, (275), 42 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:18:06,687 INFO L276 IsEmpty]: Start isEmpty. Operand 4604 states and 5611 transitions. [2024-11-11 21:18:06,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-11 21:18:06,689 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:18:06,689 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:18:06,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-11 21:18:06,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:18:06,894 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:18:06,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:18:06,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1864288034, now seen corresponding path program 1 times [2024-11-11 21:18:06,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:18:06,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407155834] [2024-11-11 21:18:06,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:18:06,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:18:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:18:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 30 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:18:07,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:18:07,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407155834] [2024-11-11 21:18:07,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407155834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:18:07,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070060322] [2024-11-11 21:18:07,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:18:07,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:18:07,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:18:07,785 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 21:18:07,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-11 21:18:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:18:07,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-11 21:18:07,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:18:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 24 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:18:08,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 21:18:09,754 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 22 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:18:09,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070060322] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 21:18:09,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 21:18:09,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 34 [2024-11-11 21:18:09,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895489972] [2024-11-11 21:18:09,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 21:18:09,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-11 21:18:09,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 21:18:09,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-11 21:18:09,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2024-11-11 21:18:09,756 INFO L87 Difference]: Start difference. First operand 4604 states and 5611 transitions. Second operand has 35 states, 35 states have (on average 7.857142857142857) internal successors, (275), 34 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:18:15,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 21:18:15,792 INFO L93 Difference]: Finished difference Result 11179 states and 13661 transitions. [2024-11-11 21:18:15,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-11 21:18:15,793 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.857142857142857) internal successors, (275), 34 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-11-11 21:18:15,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 21:18:15,799 INFO L225 Difference]: With dead ends: 11179 [2024-11-11 21:18:15,799 INFO L226 Difference]: Without dead ends: 7508 [2024-11-11 21:18:15,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4639 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=3036, Invalid=13734, Unknown=0, NotChecked=0, Total=16770 [2024-11-11 21:18:15,805 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 3133 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3133 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-11 21:18:15,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3133 Valid, 1123 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-11 21:18:15,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7508 states. [2024-11-11 21:18:16,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7508 to 3364. [2024-11-11 21:18:16,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3364 states, 3363 states have (on average 1.1900089206066014) internal successors, (4002), 3363 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:18:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3364 states to 3364 states and 4002 transitions. [2024-11-11 21:18:16,104 INFO L78 Accepts]: Start accepts. Automaton has 3364 states and 4002 transitions. Word has length 98 [2024-11-11 21:18:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 21:18:16,104 INFO L471 AbstractCegarLoop]: Abstraction has 3364 states and 4002 transitions. [2024-11-11 21:18:16,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.857142857142857) internal successors, (275), 34 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 21:18:16,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3364 states and 4002 transitions. [2024-11-11 21:18:16,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-11 21:18:16,109 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 21:18:16,110 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 21:18:16,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-11 21:18:16,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:18:16,310 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 21:18:16,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 21:18:16,311 INFO L85 PathProgramCache]: Analyzing trace with hash -180653523, now seen corresponding path program 1 times [2024-11-11 21:18:16,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 21:18:16,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142122645] [2024-11-11 21:18:16,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:18:16,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 21:18:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:18:17,530 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 25 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:18:17,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 21:18:17,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142122645] [2024-11-11 21:18:17,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142122645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 21:18:17,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36525586] [2024-11-11 21:18:17,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 21:18:17,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 21:18:17,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 21:18:17,533 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 21:18:17,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-11 21:18:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 21:18:17,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-11 21:18:17,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 21:18:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 25 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 21:18:19,262 INFO L312 TraceCheckSpWp]: Computing backward predicates...